Crop and Pest Management Guidelines

A Cornell Cooperative Extension Publication
34135

5.2 Pest Management Schedules for Diseases and Major Insects

Pest(s)

Materials

Rate per Acre

Comments

34384

5.2.1 DORMANT

Canker diseases (Eutypa, Botryosphaeria)

Topsin M 70 WSB

3.2 oz/gal water

Apply Topsin M as a paint or directed spray to wounded surfaces after pruning and before the next rain. This recommendation is primarily for large pruning cuts, and has been shown to be beneficial. Application is allowed only in NY, under Special Local Needs (SLN) label # NY-07002. A copy of the SLN label and the federal product label must be in possession of the user at the time of application. There is a 7-day re-entry interval following application.

Mettle 1ME

5 fl oz/A

Mettle is labeled in all states for spray application in 25 to 50 gpa within 24 hr after pruning, with a 12-hr REI. Consult the label for further use difrections. Unlike Topsin, no trials have been conducted in NY or PA to evaluate the efficacy of Mettle for this purpose.

34385

5.2.2 DELAYED DORMANT

Soft scale insects and mealybugs

petroleum oil

2.5%

Apply early in the spring at bud swell but before any leaf tissue is exposed. Apply in 250 to 300 gallons of water. Thorough coverage is essential for good results. Avoid use with Captan or sulfur due to phytotoxicity. Also avoid use within 24 hours before or after freezing temperatures. Field data indicate only short-term benefits for reducing mealybug populations. Oil more effective against soft scale.

OR

Knack

16 fl oz

Only labeled for lecanium scale. Can use oil with Knack at this time (delayed dormant). Not to exceed 32 fl oz/A for season.

OR

*Lorsban Advanced

1 qt

Apply no later than late budbreak in at least 50 gallons. Only one application of *Lorsban Advanced allowed per season. Other generic products with this active ingredient (chlorpyrifos) also labeled on grapes for NY and PA (e.g. Vulcan, Warhawk).

Anthracnose, black rot, Phomopsis, powdery mildew

*NYMiller Lime Sulfur

1 gal/10 gal water

This spray is most likely to be beneficial on cultivars highly susceptible to anthracnose (e.g., Marquette, Reliance), where it can be important in blocks with a history of the disease, or in blocks where black rot and/or Phomopsis control is regularly problematic and conventional fungicides will not be used during the growing season. Otherwise, it is unlikely to be cost effective. THOROUGH coverage of the vines is essential for acceptable results. If practical, application to individual vines with a handgun or using some other system that minimizes loss of these expensive materials to non-grapevine surfaces (e.g., hooded-boom, recirculating sprayer such as the Lipco) is desirable. The low per-acre rate of *NYSulforix is unlikely to be effective unless loss to non-target surfaces is minimal. Use of more than 15 gal/A of *NYMiller Lime Sulfur is prohibitively expensive. For NYS users: note that *NYSulforix is only labeled for use against powdery mildew and Phomopsis and that *NYMiller Lime Sulfur is only labeled for control of Phomopsis, powdery mildew and anthracnose.

OR

*NYSulforix

1-2 gal

34386

5.2.3 BUD SWELL

Climbing cutworms

Treat at bud swell during early spring. Buds are only susceptible from swell to 1-inch stage. Treat when bud damage is detected at above 2%.

^Sevin 80 Solupak

2.5 lb

 or Sevin 4F

2 qt

or Sevin XLR Plus

1-2 qt

OR

*NYAltacor

3-4.5 oz

Maximum of 9 oz *NYAltacor per season.

OR

Dipel DF

0.5-2 lb

OR

*Danitol 2 EC

10.7 fl oz

OR

*Brigade 2EC

3.2-6.4 fl oz

Maximum of 6.4 fl oz *Brigade 2 EC per season.

or *Brigade WSB

8-16 oz

or *Bifenture 10DF

8-16 oz

or *Bifenture 2EC

3.2-6.4 fl oz

or *Sniper

3.2-6.4 fl oz

OR

*Baythroid XL

2.4-3.2 fl oz

Maximum of 12.8 fl oz *Baythroid XL per season.

OR

*Leverage 360

3.2-6.4 fl oz

Maximum of 6.4 fl oz *Leverage 360 per season.

OR

^*Mustang Max

2-4 fl oz

Maximum 24 fl oz ^*Mustang Max per season.

OR

*Hero

4-10.3 fl oz

Maximum 10.3 fl oz *Hero per season.

OR

Delegate WG

3-5 oz

Maximum of 19.5 oz/A/year.

OR

*NYBelt

3-4 fl oz

Maximum of 3 applications *NYBelt per season or maximum 12 fl oz per acre per season.

OR

*NY†Voliam Flexi

4.5 oz

Maximum of 9 fl oz *NY†Voliam Flexi per season. Not allowed in NY since climbing cutworm not explicitly listed on label. OK for PA.

OR

*Lorsban Advanced

1 qt

Apply in a minimum 50 gallons. Do not apply after bloom stage.

OR

^*Triple Crown

5 fl oz

Maximum of 10.2 fl oz/A per season.

Grape flea beetle, steely beetle

Treat when this insect appears in early spring as buds are swelling. Scout throughout bud swell stage, particularly in vineyard rows near wood lines or brushy areas. Look for feeding injury to buds or presence of steely blue beetles. Beetles are most active on warm sunny days.

^Sevin 80 Solupak

1.25-2.5 lb

or Sevin 4F

1-2 qt

or Sevin XLR Plus

1-2 qt

OR

*Danitol 2 EC

5.3-10.6 fl oz

OR

*Baythroid XL

2.4-3.2 fl oz

Maximum of 12.8 fl oz *Baythroid XL per season.

OR

*Leverage 360

3.2-6.4 fl oz

Maximum of 6.4 fl oz *Leverage 360 per season.

34387

5.2.4 1-INCH SHOOT GROWTH (when the average shoot length is 1 inch)

Phomopsis cane and leaf spot

This spray may be important if a prolonged rainy period occurs before the next anticipated spray, especially in blocks with a history of Phomopsis development. Phomopsis diseases are most likely to become a problem when the fungus is allowed to build up on dead canes or other infected wood in the vines (e.g., pruning stubs, spurs), especially if weather is wet during critical stages of disease development. Therefore, hedged vineyards are at an evelated risk of incurring economic losses from Phomopsis, although damage can occur in all pruning and training systems. Rachises are highly susceptible when clusters first become visible and infections during this early part of the season are most damaging. Fruit infections can be initiated through the young berry stems as soon as clusters become visible, and can continue to occur until fungal spores are depleted, which is approximately the pea-sized berry stage. The maximum rates of the listed products should not be necessary in the very early season IF sprays are thoroughly applied. Although some other active ingredients are registered for control of Phomopsis, the three included in the products listed below (captan, mancozeb, ziram) are the only ones that have consistently provided good control in NY trials. See Table 3.1.2 for varietal susceptibility to this disease.

Captan 50WP

2-4 lb

OR

Captan 80WDG

1.25-2.5 lb

OR

Captec 4L

1-2 qt

OR

*NYDithane DF

2-4 lb

or Dithane M45

or *Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

1.6-3.2 qt

or *NYManzate Max 4F

OR

Ziram 76DF

3-4 lb

Anthracnose

Only a problem on a few specific varieties; see the entry under Anthracnose in Section 3.1, Vineyard Disease Management, for a list of susceptible varieties and weather conditions favoring its development. Only Rally, Inspire Super, Revus Top, Quadris Top, and Pristine are specifically labeled for control of anthracnose and none of them are generally recommended for use this early in the season, since the diseases that they primarily target are not active yet. However, early season control can be important on susceptible varieties, especially when wet. This can be provided by sprays of mancozeb, ziram, or captan that are applied to control Phomopsis and other diseases during the early season. A delayed dormant spray of lime sulfur that is thoroughly applied will also provide some control, and can be used to supplement conventional fungicide programs in problem blocks or to substitute for them to some extent when conventional fungicides will not be used (e.g., "organic" production systems).

Powdery mildew

This powdery mildew spray is only appropriate for V. vinifera and other highly susceptible varieties, and may be particularly valuable in vineyard blocks with significant disease the previous year, if weather forecasts call for rain and temperatures persistently above 50°F. Even under favorable environmental conditions, it is much less critical in vineyard blocks where good control of foliar infection was maintained through Labor Day and/or where the next spray will include a material with eradicative action against young infections (e.g., sulfur, oils, potassium salts). The materials listed below should not be used on sulfur-intolerant varieties (see Table 3.1.2); however, such varieties are unlikely to need treatment this early in the season.

Liquid sulfur 6L

see label, rates vary

OR

Wettable Sulfur (several formulations)

see label, rates vary

OR

Regalia

1-4 qts (see label)

Regalia is a biopesticide that has provided fair to very good control of powdery mildew in NY trials, depending on disease pressure. It is likely to work best on less susceptible varieties or at times of year when pressure is low. Different rates are recommended depending on whether it is used alone or in a tank mix. Because Regalia requires 48 hours to activate plant defenses, applications need to start before infection. This product could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. Regalia should not be relied on for powdery mildew control during immediate prebloom and post bloom applications.

OR

Fracture

20.5-24.4 fl oz

Fracture is a biopesticide that has provided fair to good control of powdery mildew in NY and PA trials. It could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. It should not be relied on for conventional powdery mildew control during this critical window. No more than 5 applications can be made during the season, and Fracture may be applied no more than twice before alternating with a product that has a different mode of action.

34388

5.2.5 3- to 5-INCH SHOOT GROWTH (new shoots are 3-5 inches long)

Phomopsis cane and leaf spot

This is a critical spray for control of rachis infections on susceptible varieties, particularly in wet springs. On highly susceptible varieties (e.g., Niagara), this can also be an important time to prevent the establishment of infections on young berry stems, which can move into the fruit and rot them later in the season. The maximum rates of the listed products should not be necessary at this growth stage IF sprays are thoroughly applied. Although other products are labeled for Phomopsis control, only those that contain one of the three active ingredients in the list below (captan, mancozeb, ziram) provide reliable control of the disease at this important time.

Captan 50WP

2-4 lb

OR

Captan 80WDG

1.25-2.5 lb

OR

Captec 4L

1-2 qt

OR

*NYDithane DF

2-4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

1.6-3.2 qt

or *NYManzate Max 4F

OR

Ziram 76DF

3-4 lb

Black rot

Black rot sprays are rarely needed this early in the season unless serious disease occurred the previous year and warm, wet conditions (Table 3.1.1) are anticipated before the next spray is to be applied.

*NYDithane DF

2-4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

1.6-3.2 qt

or *NYManzate Max 4F

OR

Ziram 76DF

3-4 lb

OR

Rally 40WSP

3-4 oz

Inspire Super, Mettle, generic tebuconazole products, Revus Top, Rally, †Rhyme, and †Topguard EQ have some protective ("forward") activity and also are very effective when applied after the start of an infection period (see Table 3.1.1). The duration of post-infection activity is incompletely characterized, but sprays applied up to 3-7 days after the start of an infection period appear to provide good to excellent control at labeled rates, but only IF coverage is thorough. Mancozeb products or ziram applied at this time for control of Phomopsis will also provide very good protection against black rot. Although relatively weak against black rot, Captan applied for Phomopsis control should provide adequate protection at this time of the season, except in extreme conditions. CAUTION: DO NOT USE REVUS TOP, INSPIRE SUPER, OR *NYAPROVIA TOP ON CONCORD GRAPES (CAUSES INJURY).

OR

†Rhyme 2.08SC

4-5 fl oz

OR

†Topguard EQ 4.29SC

5-6 fl oz

OR

Mettle 1ME

3-5 fl oz

OR

Revus Top 4SC

7 fl oz

or Inspire Super

16-20 fl oz

Powdery mildew

Do not delay sprays beyond this stage for V. vinifera varieties, especially if powdery mildew was prevalent 30 days before leaf fall last year. Sulfur activity is strongly influenced by rate and frequency of application, formulation, and rainfall. It is very effective when applied at relatively high rates and short (7- to 10-day) spray intervals, but efficacy can decline as intervals increase and/or rates decrease, especially in rainy weather. Addition of a "spreader/sticker" surfactant often improves performance in wet weather, and micronized and liquid formulations are generally more persistent than wettable powders. When foliage growth is sparse at the beginning of the season, fungicides can be used effectively at lower per-acre rates than they can from the immediate prebloom spray onwards, IF thorough coverage is provided.

Liquid Sulfur 6L

read the label

See Table 3.1.2 for varietal sensitivity to sulfur; it should be used only on varieties known to be tolerant.

OR

Wettable Sulfur (several DF, WDG, and WP formulations)

read the label

OR

JMS Stylet Oil

1-2% conc., see label

Use JMS Stylet Oil or Purespray Green at 10-day intervals in a 1% solution (1 gal per 100 gal of spray solution) or at 14-day intervals in a 1.5-2% solution. Do not concentrate beyond 2% in lower gallonage applications. Thorough spray coverage is critical for the performance of all oil products. They are most active in a post-infection or eradicant mode, but also provide limited "forward" (protective) activity; protective activity is seriously diminished after 1/4-inch or more of rain occurs (wash off). See label for potential compatibility problems with other pesticides.

OR

Purespray Green

1-2% conc.

OR

Nutrol

4 lb

Nutrol and the potassium bicarbonate products (Kaligreen, ^Armicarb, Milstop) provide no "forward" (protective) activity but are active in post-infection and eradicant modes, where they are most effective against incubating or very young colonies. For best results, they should be tank-mixed with a product that provides protective activity; or if used alone, they should be applied at short (maximum 7 days) spray intervals.

OR

Kaligreen 82 SP

2.5 lb

OR

^Armicarb 85WG

2.5 lb

OR

Milstop 85WG

2.5 lb

OR

*NYViticure 4SC

4-6 fl oz

CAUTION: To restrict further development of resistance against the DMI (Group 3) fungicides (Inspire Super, Mettle, generic tebuconazole products, Quadris Top, Rally, Revus Top, †Rhyme, †Topguard EQ, *NYViticure, *NYTronic), it is recommended that they be applied a maximum of three times per season combined, regardless of which products are used.

OR

*NYProcure 480SC

4-6 fl oz

OR

*NYTronic 4SC

4-6 fl oz

OR

Rally 40WSP

3-4 oz

OR

Torino 120SC

3.4 fl oz

OR

†Rhyme 2.08SC

4-5 fl oz

OR

†Topguard EQ 4.29SC

5-6 fl oz

OR

Mettle 1ME

3-5 oz

OR

Double Nickel LC

1-2 qt

Double Nickel is a biopesticide sold in both liquid and WDG formulations. It requires relatively short spray intervals and has provided fair to very good results in NY trials, depending on cultivar susceptibility. It has been most effective on moderately susceptible cultivars rather than highly susceptible cultivars such as Chardonnay.

or Double Nickel 55

0.5-1 lb

OR

Oso 5SC

6.5 fl oz

Oso and Ph-D are relatively new products that contain the same, older active ingredient. They have provided good to very good results in NY trials when rotated with strong conventional materials.

or Ph-D 89WDG

6.2 oz

OR

Regalia

1-4 qts (see label)

Regalia is a biopesticide that has provided fair to very good control of powdery mildew in NY trials, depending on disease pressure. It is likely to work best on less susceptible varieties or at times of year when pressure is low. Different rates are recommended depending on whether it is used alone or in a tank mix. Because Regalia requires 48 hours to activate plant defenses, applications need to start before infection. This product could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. Regalia should not be relied on for powdery mildew control during immediate prebloom and post bloom applications.

OR

Fracture

20.5-24.4 fl oz

Fracture is a biopesticide that has provided fair to good control of powdery mildew in NY and PA trials. It could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. It should not be relied on for conventional powdery mildew control during this critical window. No more than 5 applications can be made during the season, and Fracture may be applied no more than twice before alternating with a product that has a different mode of action.

Abound 2SC

Azaka 2SC

Flint 50WG/Flint Extra

Sovran 50WG Pristine 38WG

Quadris Top 2.7SC

*NY†Luna Experience 400SC

*NY†Luna Sensation

Quintec 2SC

Vivando 2.5SC

Prolivo 300 SC

Revus Top

*NYAprovia 0.83EC

not recom-mended at this time

 Although legal, use of the strobilurin-containing fungicides (Abound, Azaka, Flint, Pristine, Quadris Top, Sovran), *NYAprovia, *NYAprovia Top, *NY†Luna Experience, Quintec, or Vivando at this time is not recommended due to resistance-management considerations, economics, and label restrictions on the maximum number of allowable sprays. These materials should be saved until the immediate prebloom growth stage or later, when they are likely to be most beneficial. CAUTION: DO NOT USE PRISTINE, QUADRIS TOP, *NYAPROVIA TOP, OR FLINT ON CONCORD GRAPES OR PRISTINE ON NOIRET GRAPES (CAUSES INJURY). See Section 3.2 for information concerning ABOUND and other azoystrobin-containing products and the use of these fungicides in Pennsylvania.

*NYAprovia Top 1.6EC

^Miravis Prime

Anthracnose

Rally 40WSP

3-5 oz

Although not specifically labeled for control of anthracnose, mancozeb, captan, and ziram products are effective against the disease when applied at this time for control of Phomopsis and/or black rot. Inspire Super, Pristine, Quadris Top, and Revus Top also are labeled for control of anthracnose, but their use is generally not recommended this early in the growing season.

Mettle 1ME

3-5 fl oz

see comments

Angular leaf scorch

Angular leaf scorch is most likely to develop on susceptible varieties when high rainfall occurs during the period of early shoot growth (see Table 3.1.2 for varietal susceptibility). Although there are no specific labels for control of this disease, various mancozeb products applied according to label directions for Phomopsis, black rot, and/or downy mildew control have given good control of angular leaf scorch. The difenoconazole products (Inspire Super, Quadris Top, Revus Top) are labeled for control of rotbrenner, the European "cousin" of angular leaf scorch, which is caused by a very closely related fungus.

Banded grape bug,
Lygocoris inconspicuous

In late May, scout vineyards for the immature stages (nymphs) of banded grape bug and Lygocoris inconspicuous. Restrict your search to shoot tips and clusters where the nymphs spend most of their time. Small nymphs can be difficult to find within the cluster. An alternative method for scouting is to remove clusters from the vine and swirl them around in a container of soapy water or ethyl alcohol. The nymphs exit the clusters and drop to the bottom, where they can be counted. Infestation levels greater than 1 nymph per 10 shoots can cause crop loss. As of press time, use of Sevin products in NYS to control these pests is prohibited since the pests are not listed on the product label. Insecticide applied before the second week in June will prevent economic injury. Infestations do not occur in most vineyards or necessarily throughout a vineyard block; therefore it may not be necessary to treat the entire vineyard or all blocks at a vineyard. Assail 30SG is labeled for use against banded grape bug but not Lygocoris inconspicuous.

^Sevin 80 Solupak

0.75-2.5 lb

OR

*Danitol 2.4EC

10.67-21.3 fl oz

OR

*NYImidan 70W

1.33-2.125 lb

OR

Assail 30SG

2.5 oz

Grape plume moth

Damage from the larvae of grape plume moth is generally not of economic importance. Exceptions are high infestations (greater than 20% of new shoots), especially for high value crops. Infestations are often limited to vineyard edges. Use sufficient water to get good coverage. Sevin cannot be used to control grape plume moth in NYS since the pest is not listed on the label.

^Sevin 80 Solupak

0.75-2.5 lb

OR

*Danitol 2.4EC

10.67-21.3 fl oz

OR

Dipel DF

1 lb

Not registered for use against grape plume moth in NY.

European red mite and two-spotted spider mite

European red mite (ERM) is most commonly a problem on Long Island, NY, although in recent years it has become more of a problem in the Finger Lakes. In the spring ERM is generally rare, although there are years and vineyards when large overwintered populations stunt shoot growth and require treatment. We do not have good economic threshold estimates at this time of the season. However, scout 10 to 20 areas throughout each vineyard block for presence of ERM on shoots. If you find them in more than 25% of the areas sampled, a treatment may be necessary. Alternately, if you find vines with 50 or more mites per leaf and obvious bronzing, you should consider spot treating the area or the entire block if widespread.

*Vendex 50%WP

1.25-2 lb

Not more than two applications of *Vendex/season.

OR

†Nexter

4.4-10.6 oz

†Nexter is not registered for use on Long Island. Lower rate (4.4-5.2 oz) effective against ERM. Higher rate (6.6 to 10.6 oz) required for control of two-spotted spider mite. †Nexter has some activity against grape leafhopper.

OR

^*Agri-Mek 0.15EC

8-16 fl oz

Labeled for two-spotted spider mite only. Currently, European red mite is not on the label. ^*Agri-Mek 0.15EC must be applied in combination with nonionic surfactant. ^*Agri-Mek 0.15EC has some activity against grape berry moth as well, but not recommended as stand alone material.

or *Agri-Mek SC

1.75-3.5 fl oz

Labeled for two-spotted spider mite only. *Agri-Mek SC must be applied in combination with nonionic surfactant.

OR

Acramite 50WS

0.75-1.0 lb

Higher rates (e.g. 1.0 lb) of Acramite 50 WS recommended for ERM.

OR

JMS Stylet Oil

1-2% conc

Multiple applications, starting at 3" shoot growth, have been shown to reduce mite populations. Refer to JMS Stylet Oil label for potential compatibility problems with other spray materials.

OR

Zeal Miticide1

2-3 oz

Mainly effective against eggs and immatures so may see a delay in knock down of population. Product replaces ^Zeal which is a granular formulation instead of WSB. Only one application per season.

OR

Nealta

13.7 fl oz

Effective against TSSM and ERM. Active against eggs and motile stages. Must rotate with miticide with different mode of action. Max allowed per season 27.4 fl oz/A.

OR

Onager Miticide

12-24 oz

Active against eggs and motile immatures. Only one application per year allowed.

OR

Portal

2 pts

Contact pesticide that stops feeding and egg laying, but some delay before death. Maximum allowed per season is 2 pts/A.

34389

5.2.6 10- to 12-INCH SHOOT GROWTH (new shoots are 10-12 inches long)

Phomopsis cane
and leaf spot

This can be an important spray on susceptible varieties, to protect against rachis infections and prevent the establishment of disease that can move from young berry stems into the fruit later in the season. It can be especially important in vineyards with previous Phomopsis problems, particularly in wet years.

Captec 4L

1.5-2.0 qt

OR

Captan 50WP

3-4 lb

OR

Captan 80WDG

1.75-2.5 lb

OR

*NYDithane DF

3-4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

2.4-3.2 qt

or *NYManzate Max 4F

OR

Ziram 76DF

3-4 lb

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

Black rot

This can be an important spray on susceptible varieties if black rot was severe the previous year, particularly if weather is wet; however, it is much less important if the vineyard was clean and carryover inoculum, consequently, is low.

*NYDithane DF

3-4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

2.4-3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Rally 40WSP

4-5 oz

Most DMI (Group 3) fungicides - specifically, difenoconazole (Revus Top, Inspire Super, Quadris Top, *NYAprovia Top), Rally, generic tebuconazole products,

OR

Mettle 1ME

3-5 oz

OR

Revus Top 4SC

7 fl oz

Mettle, and flutriafol (†Rhyme, †Topguard EQ) - are highly effective against black rot. They provide limited (several days) "forward" protective activity and up to one week of postinfection ("backward") activity. This combination of "forward" and "backward" activity accounts for their high efficacy when applied at regular 10- to 14-day spray intervals, but their limited protective activity should be considered when alternating with materials such as the strobilurins or mancozeb or ziram, which have little to no postinfection activity. The protective activity of sprays containing these materials is increased when they are tank-mixed with mancozeb or ziram, included also for control of Phomopsis and downy mildew. The azoxystrobin contained in the combination products, Quadris Top and †Topguard EQ, will also provide additional protective ability; note, however, that the dose of azoxystrobin provided by the low rate (5 fl oz) of †Topguard EQ is only 75% as much as provided by the low rate (10 fl oz) of Quadris Top. For resistance management, it is recommended that Group 3 fungicides be applied a maximum of three times per season in total for all such products combined.

or Inspire Super

16-20 fl oz

or *NYAprovia Top 1.6EC

8.5-13.3 fl oz

CAUTION: DO NOT USE REVUS TOP, *NYAPROVIA TOP, OR INSPIRE SUPER ON CONCORD GRAPES (CAUSES INJURY).

OR

Ziram 76DF

3-4 lb

OR

*NY†Luna Experience

6.0-8.6 fl oz

Although labeled for control of powdery mildew at rates as low as 5.0 fl oz/A, higher rates are needed for reliable black rot control. The 8.6 fl oz rate provides the same dose of tebuconazole as the recommended 4.0 oz rate of tebuconazole products such as the former product, ^Elite. The other component of *NY†Luna Experience (fluopyram) does not provide control of black rot.

OR

*NY†Luna Sensation

5.0-7.6 fl oz

The 5.0-7.6 fl oz rate of *NY†Luna Sensation should provide a dose of trifloxystrobin equivalent to that in 2.5-3.8 fl oz of Flint Extra, enough for good to excellent control of black rot. Do not apply this product to Concord grapes or injury may occur.

OR

Flint 50WG

1.5-2.0 oz

 The strobilurin-containing fungicides (Abound, Azaka, Flint/Flint Extra, Pristine, Quadris Top, Sovran †Topguard EQ, *NYDexter Max, *NY†Luna Sensation) provide very good protective activity; however, all except Quadris Top and †Topguard EQ provide only limited and incomplete postinfection activity (the difenoconazole and flutirafol components of Quadris Top and †Topguard EQ, respectively, provide excellent post-infection activity). CAUTION: DO NOT USE PRISTINE, QUADRIS TOP, OR FLINT ON CONCORD GRAPES OR PRISTINE ON NOIRET GRAPES (CAUSES INJURY). Note that products containing azoxystrobin (Quadris Top, †Topguard EQ, Azaka, and Abound) are extremely phytotoxic to certain apple varieties. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

Flint Extra

3.5-3.8 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Abound 2SC

11-15 fl oz

OR

Azaka 2SC

11-15 fl oz

OR

Pristine 38WG

8.0-12.5 oz

OR

Quadris Top 2.7SC

12-14 fl oz

OR

^Miravis Prime

9.2-13.4 fl oz

Powdery mildew

Do not delay sprays beyond this stage for V. vinifera or highly susceptible hybrids. When foliage growth is sparse, most fungicides can be used effectively at lower per-acre rates than they can from the immediate prebloom spray onwards, IF very thorough coverage is provided.

Liquid Sulfur 6L

follow the label, varies among products

In addition to its protective activity, sulfur also has significant postinfection and eradicative activity against young colonies when used at relatively high rates (5 to 10

lb/A, depending on canopy density and spray coverage).

OR

Wettable Sulfur (several formulations)

follow the label, varies among products

Materials with eradicative activity may be particularly useful at this time if no previous sprays have been applied, especially on highly susceptible varieties. However, eradicative activity will not occur unless THOROUGH spray coverage of all green tissues is provided.

OR

JMS Stylet Oil

1-2% conc., read the label

Refer to JMS Stylet Oil and Purespray Green labels for potential compatibility problems with other spray materials. Oils are most active in a post-infection or eradicant mode, and provide only limited "forward" (protective) activity; protective activity is seriously diminished after 1/4-inch or more of rain occurs (wash off), especially at lower rates. The eradicative activity of oils may be particularly useful at this time if no previous sprays have been applied, especially on highly susceptible varieties. However, eradicative activity will not occur unless THOROUGH spray coverage of all green tissues is provided.

OR

Purespray Green

1-2% conc.

OR

Nutrol

4 lb

Nutrol and the potassium bicarbonate products (Kaligreen, ^Armicarb, Milstop) provide no "forward" (protective) activity but are active in post-infection and eradicant modes, where they are most effective against incubating or very young colonies. For best results, they should be tank-mixed with a product that provides protective activity; or if used alone, they should be applied at short (maximum 7 days) spray intervals.

OR

Kaligreen 82 SP

2.5 lb

or ^Armicarb 85WG

2.5 lb

or Milstop 85WG

2.5 lb

OR

Rally 40WSP

3-5 oz

CAUTION: To restrict further development of resistance against the DMI (Group 3) fungicides (Mettle, Inspire Super, Quadris Top, Rally, Revus Top, †Rhyme, generic tebuconazole products, †Topguard EQ, *NYViticure, *NYTrionic), it is recommended that products containing any of them be applied a maximum of three times per season, regardless of which ones are used. CAUTION: DO NOT USE REVUS TOP ON CONCORD GRAPES (CAUSES INJURY).

Vivando has provided excellent control of strobilurin- and DMI-resistant mildew populations, and is a useful component in a rotational program for powdery mildew control. Prolivo contains an active ingredient in the same chemical class as Vivando and would be expected to perform similarly. Quintec is a powdery mildew-specific product unrelated to any other fungicide on the market, and has provided very good to excellent control since its introduction as well. Neither should be applied more than three times per season, nor more than two times in a row (ideally, not even two times in a row) before rotating to a different product active against powdery mildew.

OR

*NYViticure 4SC

4-6 fl oz

OR

*NYProcure 480SC

4-6 fl oz

OR

*NYTrionic 4SC

4-6 fl oz

OR

^Mettle 1ME

3-5 oz

OR

Revus Top 4SC

7 fl oz

OR

†Topguard EQ 4.29SC

5-6 fl oz

OR

†Rhyme 2.08 SC

4-5 fl oz

OR

Quintec 2SC

3-4 fl oz

OR

Vivando 2.5SC

10.3-15.4 fl oz

OR

Prolivo 300SC

4-5 fl oz

OR

Torino 120SC

3.4 fl oz

Torino is another new powdery mildew-specific fungicide that's in its own unique fungicide group, unrelated to any other registered product. It has provided good to very good control in repeated NY trials. The label allows a maximum of two applications per year.

OR

*NY†Luna Experience

6.0-8.6 fl oz

*NY†Luna Experience is a new product first available in most states in 2013. It combines fluopyram, a new "Group 7" fungicide similar to boscalid (the non-strobie component of Pristine) with tebuconazole, a traditional DMI (Group 3) fungicide. It has provided excellent activity against powdery mildew in multiple trials.

OR

*NY†Luna Sensation

4.0-7.6 fl oz

*NY†Luna Sensation is another new product (first available in 2018) with the same fluopyram active ingredient, but combined with trifloxystrobin, a traditional strobilurin (Group 11) fungicide. It too should provide good to excellent control of powdery mildew. Do not apply this product to Concord grapes or injury may occur.

OR

*NYAprovia 0.83SC

8.6-10.5 fl oz

Aprovia is another new Group 7 fungicide first registered for the 2016 season; it is a solo product (not combined with another active ingredient). It has provided excellent activity against powdery mildew in multiple trials, but has not provided reliable activity against any other disease.

OR

*NYAprovia Top 1.6EC

8.5-13.3 fl oz

*NYAprovia Top is a relatively new product that combines the active ingredient contained in *NYAprovia plus an effective rate of the DMI fungicide difenoconazole: both active ingredients have considerable activity against powdery mildew.

CAUTION: DO NOT USE *NYAPROVIA TOP ON CONCORD GRAPES (CAUSES INJURY).

It is recommended that the total number of Group 7 materials (*NY†Luna Experience, *NYAprovia, *NYAprovia Top, Pristine, and ^Miravis Prime) applied per season be limited to no more than two, preferably not in sequence.

OR

^Miravis Prime

9.2-13.4 fl oz

OR

Sovran 50WG

3.2-4.0 oz

Powdery mildew resistance to the strobilurin fungicides (Abound, Azaka, Flint/Flint Extra, Sovran; also, one component of Pristine, Quadris Top, and *NYDexter Max) has occurred in vineyards, sometimes resulting in significant crop loss. When such resistance occurs, none of the strobilurin fungicides will provide commercial control of powdery mildew, and they must be tank-mixed with an unrelated, effective fungicide to avoid crop loss. Pristine, a product that combines a strobilurin fungicide with an unrelated material (boscalid) has provided very good control of strobilurin- resistant populations. However, control of strobilurin-resistant powdery mildew strains comes only from the boscalid component, which also is at risk for resistance development; hence, Pristine should be used sparingly and with caution where problems with strobilurins have been encountered. Quadris Top is a relatively new product that combines the active ingredient contained in Abound plus an effective rate of the DMI fungicide difenoconazole. Where they are still effective, it is critical to use the strobilurins in a manner that minimizes the probability or speed of future resistance development. We therefore recommend making no more than two applications of any strobilurin-containing (Group 11) product per year. CAUTION: DO NOT USE PRISTINE, QUADRIS TOP,FLINT, or LUNA SENSATION ON CONCORD GRAPES OR PRISTINE ON NOIRET GRAPES (CAUSES INJURY). See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

Abound 2SC

11-15 fl oz

OR

Azaka 2SC

11-15 fl oz

OR

*NYDexter Max

3.2-4.25 lb

OR

Pristine 38WG

8.0-12.5 oz

OR

Flint 50WG

1.5-2.0 oz

OR

Flint Extra

3.0-3.5 fl oz

OR

Endura 70WG

4.5 oz

OR

Quadris Top 2.7SC

12-14 fl oz

OR

Double Nickel LC

1-2 qt

Double Nickel is a biopesticide sold in both liquid and WDG formulations. It requires relatively short spray intervals and has provided fair to very good results in NY trials, depending on cultivar susceptibility. It has been most effective on moderately susceptible cultivars rather than highly susceptible cultivars such as Chardonnay.

or Double Nickel 55

0.5-1 lb

OR

Oso 5SC

6.5 fl oz

Oso and Ph-D are relatively new products that contain the same, older active ingredient. They have provided good to very good results in NY trials when rotated with strong conventional materials.

OR

Ph-D 89WDG

6.2 oz

OR

Regalia

1-4 qts (see label)

Regalia is a biopesticide that has provided fair to very good control of powdery mildew in NY trials, depending on disease pressure. It is likely to work best on less susceptible varieties or at times of year when pressure is low. Different rates are recommended depending on whether it is used alone or in a tank mix. Because Regalia requires 48 hours to activate plant defenses, applications need to start before infection. This product could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. Regalia should not be relied on for powdery mildew control during immediate prebloom and post bloom applications.

OR

Fracture

20.5-24.4 fl oz

Fracture is a biopesticide that has provided fair to good control of powdery mildew in NY and PA trials. It could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. It should not be relied on for conventional powdery mildew control during this critical window. No more than 5 applications can be made during the season, and Fracture may be applied no more than twice before alternating with a product that has a different mode of action.

Downy mildew

The downy mildew organism first becomes active at approximately 10-inch shoot growth and can cause infection if rains occur and temperatures are above 50°F. This spray can be important on highly susceptible varieties or in problem vineyards if wet weather occurs before the next spray is applied, particularly if disease was significant the previous year.

*NYDithane DF,

3-4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

2.4-3.2 qt

or Manzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Captan 50WP

2-4 lb

OR

Captan 80WDG

1.25-2.5 lb

OR

Captec 4L

1.5-2.0 qt

OR

Abound 2SC

Azaka 2SC

Sovran 50WG

Pristine 38WG

Quadris Top 2.7SC

*NY†Reason 500SC

not recom-mended for use alone

CAUTION: Downy mildew resistance to the "Group 11" fungicides (Abound, Azaka, Flint, Pristine, Quadris Top, *NY†Reason, Sovran) has developed in multiple NY vineyards, causing significant crop loss. Thus, it is now risky to rely on these fungicides for control of downy mildew, particularly in the prebloom through early postbloom period while fruit are highly susceptible. When such resistance occurs, none of these fungicides will provide commercial control of the disease, and they must be combined with an effective rate of an unrelated fungicide to avoid potential crop loss. If using these materials, it is recommended that they be applied a maximum of two times per year for all Group 11 products combined. CAUTION: DO NOT USE PRISTINE, QUADRIS TOP, OR FLINT ON CONCORD GRAPES OR PRISTINE ON NOIRET GRAPES (CAUSES INJURY). Note that Quadris Top, AZAKA, and Abound are extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

ProPhyt

1.8-3.6 pt

ProPhyt, Phostrol, and Rampart are among several products containing phosphorous acid (phosphonate, phosphite) that are registered for control of downy mildew. Phosphonate products provide limited protective and good to very good postinfection activity. The labeled rate ranges given are intended to account for variable canopy densities and disease pressure: The lower rates are appropriate during the prebloom period, but they should be increased as canopy volumes increase rapidly after fruit set. All three products contain roughly comparable levels of active ingredient (Rampart has 7% less than the other two), and appear to provide comparable levels of control when used at the same rate of product. Optimum spray intervals depend on weather conditions and rate applied; 10 days appears to be effective, whereas 14 days is too long under heavy disease pressure. Refer to the discussion on "phosphorous acid" in the "Fungicides" section. IT IS IMPORTANT THAT USE OF THESE PRODUCTS BE LIMITED TO A MAXIUMUM OF THREE APPLICATIONS PER YEAR, WITH NO MORE THAN TWO SEQUENTIAL APPLICATIONS, IN ORDER TO DELAY RESISTANCE DEVELOPMENT.

OR

Phostrol

2.5-5 pt

OR

Rampart

2-6 pt

OR

*NYPresidio 2SC

3-4 fl oz

NOTE: Valent has pulled the grape use from the *NYPresidio label and any new product will not be legal for use on grapes. However, grape growers will be able to legally use up old stock of *NYPresidio with the grape use pattern on the label.

*NYPresidio and Revus are both relatively new, but unrelated, fungicides that control only downy mildew. Revus Top is a combination product that contains the active ingredient from Revus plus a second fungicide (difenoconazole, a DMI or Group 3 material) that controls powdery mildew, black rot, and anthracnose. Both *NYPresidio and the Revus products have proven to be very effective under high disease pressure. All are absorbed by plant tissues, so are not subject to wash-off once this has occurred, and they provide both protective and limited post-infection activities (*NYPresidio is likely to provide somewhat better post-infection activity). *NYPresidio is recommended for use at 12- to 14-day intervals with a 21-day PHI, and the label states that it must be tank-mixed with another downy mildew fungicide (for resistance management). Revus is labeled for use at 7-day intervals but has given very good to excellent control on V. vinifera cultivars when applied at 14-day intervals in several NY trials, even under high disease pressure; it has a 14-day PHI. Revus Top is labeled for use at 14-day intervals, and also has a 14-day PHI. CAUTION: DO NOT USE REVUS TOP ON CONCORD GRAPES (CAUSES INJURY).

OR

Revus 2SC

8 fl oz

or Revus Top 4SC

7 fl oz

OR

*NY†Zampro 4.4SC

11-14 fl oz

*NY†Zampro is a new fungicide active against only downy mildew. *NY†Zampro contains two downy mildew-specific active ingredients: (i) ametoctradin, representing a new class of chemistry, with no other representatives currently registered; and (ii) dimethomorph, a Group 40 fungicide similar to Revus. It is assumed to have good protective

activity, some limited post-infection activity greater than that of Revus or Revus Top, and anti-sporulant activity. It is labeled for use at 7-10 day intervals but has provided very good to excellent control on V. vinifera cultivars when used at 14-day intervals in several NY trials, even under high disease pressure. The label allows a maximum of four applications per season, but we recommend no more than three applications of *NY†Zampro and Revus (or Revus Top) combined, and no more than two sequential applications of these products before rotating to a product that does not contain a Group 40 material.

OR

*NYGavel 75DF

2.0-2.5 lb

*NYGavel is a relatively new fungicide labeled for control of downy mildew and other diseases. It is a combination of two active ingredients: (i) zoxamide, a downy mildew-specific fungicide related to *NYPresidio; and (ii) mancozeb. In a limited number of trials, *NYGavel has provided fair to good control of downy mildew when applied at 14-day intervals. When applied at the labeled rate of 2.0-2.5 lb/A, it provides the same amount of mancozeb as 1.8-2.2 lb of standard 75DF formulations of other mancozeb products such as Dithane, Manzate, Penncozeb, etc. Thus, for control of labeled diseases other than downy mildew, *NYGavel should be tank-mixed with sufficient quantities of another mancozeb product to provide a mancozeb dosage equivalent to the labeled rates of 3-4 lb/A of the 75DF formulations of such products.

OR

Ranman 400SC

2.1-2.75 fl oz

Ranman is a new fungicide unrelated to any other registered product. It is active only against downy mildew, primarily as a protectant but with some limited post-infection activity. It has provided good to excellent control in NY trials and has been most effective when tank-mixed with a phosphonate product to provide additional post-infection activity.

Anthracnose

Only a common problem on a few specific varieties, particularly Marquette and Reliance and, to a lesser extent, Vidal Blanc (see the entry under Anthracnose in Section 3.1, Vineyard Disease Management, for a list of other susceptible varieties and the weather conditions favoring its development). Only Rally, Inspire Super, Revus Top, Mettle, Quadris Top, and Pristine are specifically labeled for control of anthracnose, although traditional broad-spectrum fungicides also have activity against it. Experience with controlling anthracnose in NY and neighboring states suggests that sprays of mancozeb, ziram, or captan applied to control Phomopsis and other diseases during the early season are likely to provide control of anthracnose during that period as well. A spray of lime sulfur that is applied thoroughly at the "delayed dormant" stage will also provide some control, and can be used to supplement conventional fungicide programs in problem blocks or to substitute for them to some extent when conventional fungicides will not be used (e.g., "organic" production systems).

Angular leaf scorch

Various mancozeb products applied according to label directions for Phomopsis, black rot or downy mildew management also have given good control of angular leaf scorch. The difenoconazole products (Inspire Super, Quadris Top, Revus Top) are labeled for control of rotbrenner, the European "cousin" of angular leaf scorch, which is caused by a very closely related fungus.

Eutypa dieback

Trunks and cordons infected with Eutypa are most noticeable at this time. (New shoots above cankers are stunted, with small, cupped, greenish-yellow leaves.) To minimize spread of the disease, diseased arms and trunks should be pruned out now or be flagged for removal after harvest (disease spread occurs during the winter and early spring), cutting at least 6 to 8 inches below any discolored or dead wood associated with the canker. Infected wood should be removed from the vineyard and, ideally, disposed of by burning or burying.

Banded grape bug,
Lygocoris inconspicuous

In late May, scout vineyards for the immature stages (nymphs) of banded grape bug and Lygocoris inconspicuous. Restrict your search to shoot tips and clusters where the nymphs spend most of their time. Small nymphs can be difficult to find within the cluster. An alternative method for scouting is to remove clusters from the vine and swirl them around in a container of soapy water or ethyl alcohol. The nymphs exit the clusters and drop to the bottom where they can be counted. Infestation levels greater than 1 nymph per 10 shoots can cause crop loss. Insecticide applied before the second week in June will prevent economic injury. Infestations do not occur in most vineyards or necessarily throughout a vineyard block; therefore it may not be necessary to treat the entire vineyard or all blocks at a vineyard.

^Sevin 80 Solupak

0.75-2.5 lb

OR

*Danitol 2.4EC

10.67-21.3 fl oz

OR

*NYImidan 70W

1.33-2.125 lb

OR

Assail 30SG

2.5 oz

Only labeled for banded grape bug.

34390

5.2.7 IMMEDIATE PREBLOOM (just before blossoms open)

Phomopsis cane and leaf spot (fruit and rachis infections)

Fruit infections can occur during the bloom and early postbloom period then remain dormant until preharvest. In vineyards with a previous history of this disease, continued protection against fruit and rachis infections may be beneficial from the pre-bloom through pea-sized berry period if the weather is wet during this time.

*NYDithane DF

3-4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

2.4-3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Captan 50WP

3-4 lb

OR

Captan 80WDG

2-2.5 lb

OR

Captec 4L

1.5-2.0 qt

OR

Abound 2SC

11-15 fl oz

Abound, Azaka, Pristine, Quadris Top, †Topguard EQ, and Sovran are only moderately effective against Phomopsis, but may be adequate now if more effective materials were used earlier.

CAUTION: ABOUND, AZAKA, QUADRIS TOP, †TOPGUARD EQ, AND *NYDEXTER MAX CAN CAUSE INJURY TO NEARBY APPLE TREES AND THEIR USE IS RESTRICTED IN SOME LOCALES. PRISTINE AND QUADRIS TOP CAN CAUSE INJURY TO SOME GRAPE CULTIVARS, INCLUDING CONCORD. REFER TO THE ABOUND ENTRY IN SECTION 3.2 ("FUNGICIDE INFORMATION") FOR ADDITIONAL INFORMATION ABOUT THESE ISSUES.

OR

Azaka 2SC

11-15 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Quadris Top 2.7SC

12-14 fl oz

OR

†Topguard EQ 4.29SC

6-8 fl oz

OR

Pristine 38WG

8-12.5 oz

Black rot

Do not delay black rot sprays beyond this stage. The immediate prebloom through early postbloom periods are critical for management of black rot. Although several other fungicides have some activity against black rot, the listed products are those with the most reliable activity at this critical time.

*NYDithane DF,

3-4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

2.4-3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Ziram 76DF

3-4 lb

OR

Mettle 1 ME

5 oz

Most DMI (Group 3) fungicides - specifically, difenoconazole (Revus Top, Inspire Super, Quadris Top), Rally, generic tebuconazole products, Mettle, and flutriafol (†Rhyme, †Topguard EQ)-are highly effective against black rot. They provide limited (several days) "forward" protective activity and up to one week of postinfection ("backward") activity. This combination of "forward" and "backward" activity accounts for their high efficacy when applied at regular 10- to 14-day spray intervals, but their limited protective activity should be considered when alternating with materials such as the strobilurins or mancozeb or ziram, which have little to no postinfection activity. The protective activity of sprays containing these materials is increased when they are tank-mixed with mancozeb or ziram, included also for control of Phomopsis and downy mildew. The azoxystrobin contained in the combination products, Quadris Top and †Topguard EQ, will also provide additional protective ability; note, however, that the dose of azoxystrobin provided by the low rate (5 fl oz) of †Topguard EQ is only 75% as much as provided by the low rate (10 fl oz) of Quadris Top. For resistance management, it is recommended that Group 3 fungicides be applied a maximum of three times per season in total for all such products combined. CAUTION: DO NOT USE REVUS TOP OR INSPIRE SUPER ON CONCORD GRAPES (CAUSES INJURY).

OR

†Rhyme 2.08SC

5 fl oz

OR

Revus Top 4SC

7 fl oz

or Inspire Super

16-20 fl oz

OR

†Topguard EQ 4.29SC

5-6 fl oz

OR

*NY†Luna Experience

6.0-8.6 fl oz

Although *NY†Luna Experience is labeled for control of powdery mildew at lower rates, this higher rate is needed for reliable black rot control. The 8.6 fl oz rate provides the same dose of tebuconazole as the standard 4.0 oz rate of 45DF tebuconazole products such as the former product, ^Elite.

OR

*NY†Luna Sensation

5.0-7.6 fl oz

*NY†Luna Sensation is another new product (first available in 2018) with the same fluopyram active ingredient, but combined with trifloxystrobin, a traditional strobilurin (Group 11) fungicide, very effective against black rot. It should provide good to excellent control of this disease at the 5.0-7.6 fl oz label rates. Do not apply this product to Concord grapes or injury may occur.

OR

Abound 2SC

11-15 fl oz

Note that Abound, AZAKA, QUADRIS TOP, TOPGUARD EQ, and *NYdexter max ARE extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

DO NOT USE FLINT OR LUNA SENSATION ON CONCORD GRAPES AS IT MAY CAUSE INJURY.

OR

Azaka 2SC

11-15 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Flint 50WG

2.0 oz

OR

Flint Extra

3.5-3.8 fl oz

OR

Pristine 38WG

10-12.5 oz

CAUTION: do not use Pristine on Concord or Noiret grapes (causes injury).

OR

Quadris Top 2.7SC

12-14 fl oz

CAUTION: Do not use Quadris Top or *NYAprovia Top on Concord grapes (DIFENOCONAZOLE COMPONENT causes injury). Note that Quadris Top ALSO is extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin.

OR

*NYAprovia Top 1.6EC

8.5-13.3 fl oz

OR

^Miravis Prime

9.2-13.5 fl oz

Powdery mildew

Do not delay sprays beyond this stage on Concord and other moderately susceptible varieties. Fruit of all varieties is most susceptible to powdery mildew from the immediate prebloom through the fruit set period, so this is a critical period to control fruit infections. Therefore, it is a time to use highly effective fungicides for powdery mildew control. Regardless of the material used, sprays should be applied to every row. Fungicide rates may need to be adjusted upwards from earlier applications to compensate for increased foliage development and the extreme susceptibility of young berries, and spray intervals should be tightened while fruit remain highly susceptible, particularly when environmental conditions favor disease development (see Section 3.1 for details).

Liquid Sulfur 6L

see label, rates vary

Note that sulfur, oils (Stylet Oil and Purespray Green), salts (Nutrol, Kaligreen, Milstop, ^Armicarb) and the various biopesticides must be applied more frequently than most conventional fungicides (maximum 7 to 10 day intervals, depending on rate and weather, versus about 14 days for the conventionals). Refer to the discussion of these products in Section 3.2 ("Fungicide Information").

OR

Wettable Sulfur (several formulations)

see label, rates vary

OR

JMS Stylet Oil

1-2% conc., read the label

OR

Purespray Green

1-2% conc.

OR

Nutrol

4 lb

Nutrol and the potassium bicarbonate products (Kaligreen, ^Armicarb, Milstop) provide no "forward" (protective) activity but are active in post-infection and eradicant modes, where they are most effective against incubating or very young colonies. For best results, they should be tank-mixed with a product that provides protective activity; or if used alone, they should be applied at short (maximum 7 days) spray intervals.

OR

Kaligreen 82 SP

2.5 lb

OR

^Armicarb 85WG

2.5 lb

OR

Milstop 85WG

2.5 lb

through early postbloom stage of development. However, Revus Top has provided very good to excellent control even on such cultivars in several repeated trials where other DMI fungicides sometimes did not (as have Inspire Super and Quadris Top when applied at their top label rates, which provide a dose of difenozonazole equivalent to Revus Top). Nevertheless, some premium powdery mildew products have sometimes given better control than even this best of the Group 3 fungicides. It is strongly recommended that growers make no more than three applications of all Group 3 products combined in any one season, in order to minimize further loss of sensitivity to them. CAUTION: DO NOT USE REVUS TOP, QUADRIS TOP, OR INSPIRE SUPER ON CONCORD GRAPES (CAUSES INJURY).

OR

Rally 40WSP

4-5 oz

OR

*NYViticure 4SC

6-8 fl oz

OR

*NYProcure 480SC

6-8 fl oz

OR

*NYTrionic 4SC

6-8 fl oz

OR

Mettle 1ME

3-5 oz

OR

†Rhyme 2.08SC

5 fl oz

OR

Revus Top 4SC

7 fl oz

or Inspire Super

16-20 fl oz

OR

Flint 50WG

1.5-2.0 oz

Powdery mildew resistance to the solo strobilurin products (Abound, Azaka, Flint, Flint Extra, Sovran) has occurred in multiple vineyards, sometimes resulting in extensive crop loss. When such resistance occurs, none of the strobilurin fungicides will provide commercial control of powdery mildew, and they must be tank-mixed with an unrelated, effective fungicide to avoid crop loss. Where still effective, it is critical to use the strobilurins in a manner that minimizes the probability or speed of future resistance development. Tank-mix them with sulfur (but not on sulfur-sensitive varieties) and make no more than two applications of all strobilurin (Group 11) products per year. CAUTION: DO NOT USE FLINT OR LUNA SENSATION ON CONCORD GRAPES (CAUSES INJURY). Note that Abound, AZAKA, QUADRIS TOP, TOPGUARD EQ, and *NYdexter max ARE extremely phytotoxic to certain apple varieties due to the active INGREDIENT AZOXYSTROBIN. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

Flint Extra

3.0-3.5 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Abound 2SC

11-15 fl oz

OR

Azaka

11-15 fl oz

OR

*NYDexter Max

3.2-4.25 lb

OR

Pristine 38WG

10-12.5 oz

Pristine, a product that combines a strobilurin fungicide with an unrelated fungicide (boscalid) has provided very good to excellent control in vineyards with significant strobilurin-resistant populations of the powdery mildew

fungus and excellent control in vineyards where resistant populations are low. However, control of strobilurin-resistant individuals comes only from the boscalid component, which also is at risk for resistance development; hence Pristine should be used sparingly (maximum of two applications per year, and not sequentially or "back-to-back") and with caution where problems with strobilurins have been encountered. CAUTION: DO NOT USE PRISTINE ON CONCORD OR NOIRET GRAPES (CAUSES INJURY).

OR

Quadris Top 2.7SC

12-14 fl oz

Quadris Top is a product that combines azoxystrobin (the active ingredient in Abound) and difenoconazole, the Group 3 component in Revus Top and Inspire Super, which has very good to excellent activity against powdery mildew. Note, that at the lowest label rate of 12 fl oz/A, Quadris Top provides about 87% the dose of difenoconazole provided by the label rate (7 fl oz/A) of Revus Top and a dose of azoxystrobin equivalent to the lowest label rate of Abound. At 14 fl oz/A, Quadris Top provides a difenoconazole dose equivalent to that provided by the label rate of Revus Top. †Topguard EQ similarly combines azoxystrobin and a different Group 3 fungicide (flutriafol), the active ingredient in †Rhyme. However, at rates labeled for powdery mildew control, it provides lower doses of azoxystrobin and a less effective Group 3 fungicide than does Quadris Top. CAUTION: Do not use Quadris Top OR *NYAPROVIA TOP on Concord grapes (causes injury). Note that Quadris Top is extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin.

OR

†Topguard EQ 4.29SC

5-6 fl oz

OR

Endura 70WG

4.5 oz

Boscalid (the non-strobilurin component of Pristine) is also sold as a solo compound under the name Endura. Vivando is a powdery mildew-specific fungicide that has provided excellent control even in vineyards with significant strobilurin- and DMI-resistant mildew populations, and is a useful component in a rotational program for powdery mildew control. Prolivo is a similar product with an active ingredient in the same chemical class as that in Vivando, and should provide control similar to that of Vivando at the use rates on the label.

Quintec is also a powdery mildew-specific product unrelated to any other grape fungicide on the market, and has provided very good to excellent control since its introduction as well. None of these materials should be applied more than three times per season, or more than two times in a row (ideally, not even twice in a row) before rotating to a different product active against powdery mildew.

OR

Quintec 2 SC

3-4 fl oz

OR

Vivando 2.5SC

10.3-15.4 fl oz

OR

Prolivo 300SC

4.0-5.0 fl oz

OR

Torino 120SC

3.4 fl oz

Torino, another powdery mildew-specific fungicide in a unique chemical family, first became available in most states in 2013 and is now registered in NY as well. It has provided good to very good control in repeated NY trials. The label allows a maximum of two applications per year.

OR

*NY†Luna Experience

6.0-8.6 fl oz

*NY†Luna Experience is a new product first available in 2013. It combines fluopyram, a new "Group 7" fungicide similar to boscalid (the non-strobie component of Pristine)

with tebuconazole, a traditional DMI (Group 3) fungicide. It has provided excellent activity against powdery mildew in multiple trials. The 6.0-fl oz rate is adequate for powdery mildew and for Botrytis during the bloom and post-bloom period, but the 8.6 fl oz/A is likely to be necessary for reliable black rot control unless another product active against this disease (e.g., mancozeb) is being used as well.

OR

*NY†Luna Sensation

4.0-7.6 fl oz

*NY†Luna Sensation is another new product (first available in 2018) with the same fluopyram active ingredient, but combined with trifloxystrobin, a traditional strobilurin (Group 11) fungicide. The 4.0-7.6 fl oz label rate delivers a wider range of fluopyram than the 6.0-8.6 fl oz powdery mildew rate on the *NY†Luna Experience label. For example, 6.0 and 8.6 fl ozs of *NY†Luna Experience actually delivers a dose of fluopyram equivalent to 4.8 and 6.8 fl ozs of *NY†Luna Sensation. That same 4.0-7.6 fl oz powdery mildew rate also delivers about the same amount of trifloxystrobin as 2.0-3.8 fl oz of Flint Extra, adequate for good to excellent black rot control as well. Do not apply this product to Concord grapes or injury may occur.

OR

*NYAprovia 0.83SC

8.6-10.5 fl oz

*NYAprovia is another new Group 7 fungicide first registered for the 2016 season; it is a solo product (not combined with another active ingredient). *NYAprovia has provided excellent activity against powdery mildew in multiple trials, but has not provided reliable activity against any other disease.

OR

*NYAprovia Top 1.6EC

8.5-13.3 fl oz

*NYAprovia Top is a relatively new product that combines the active ingredient contained in *NYAprovia plus an effective rate of the DMI fungicide difenoconazole: both active ingredients have considerable activity against powdery mildew.

CAUTION: DO NOT USE *NYAPROVIA TOP ON CONCORD GRAPES (CAUSES INJURY).

^Miravis Prime is a combination of a new succinate dehydrogenase inhibitor fungicide (SDHI, Group 7) and fludioxonil (Group 12). In NY and PA trials, ^Miravis Prime has provided high levels of powdery mildew control.

It is recommended that the total number of applications of Group 7 materials (*NY†Luna Experience, Pristine, Endura, *NYAprovia, and ^Miravis Prime) be limited to no more than two per season, preferably not in sequence.

OR

^Miravis Prime

9.2-13.4 fl oz

OR

Double Nickel LC

2 qt

Double Nickel is a biopesticide sold in both liquid and WDG formulations. It requires relatively short spray intervals and has provided fair to very good results in NY trials, depending on cultivar susceptibility. It has been most effective on moderately susceptible cultivars rather than highly susceptible cultivars such as Chardonnay.

or Double Nickel 55

1 lb

OR

Oso 5SC

6.5 fl oz

Oso and Ph-D are relatively new products that contain the same, older active ingredient. They have provided good to very good results in NY trials when rotated with strong conventional materials.

or Ph-D 89WDG

6.2 oz

OR

Regalia

1-4 qts (see label)

Regalia is a biopesticide that has provided fair to very good control of powdery mildew in NY trials, depending on disease pressure. It is likely to work best on less susceptible varieties or at times of year when pressure is low. Different rates are recommended depending on whether it is used alone or in a tank mix. Because Regalia requires 48 hours to activate plant defenses, applications need to start before infection. Regalia should only be considered for powdery mildew control during immediate prebloom in an organic spray program. It should not be relied on for conventional powdery mildew control during this critical window.

OR

Fracture

20.5-24.4 fl oz

Fracture is a biopesticide that has provided fair to good control of powdery mildew in NY and PA trials. It should only be considered for powdery mildew control during immediate prebloom in an organic spray program. It should not be relied on for conventional powdery mildew control during this critical window. No more than 5 applications can be made during the season, and Fracture may be applied no more than twice before alternating with a product that has a different mode of action.

Downy mildew

Do not delay sprays beyond this stage. This is a critical time to manage downy mildew.

*NYDithane DF

3-4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

2.4-3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.5 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Captan 50WP

3-4 lb

OR

Captan 80WDG

2-2.5 lb

OR

Abound 2SC

Azaka 2SC

Sovran 50WG

Pristine 38WG

*NY†Reason 500SC

Quadris Top 2.7SC

†Topguard EQ 4.3SC

not recommended for use alone

CAUTION: Downy mildew resistance to the "Group 11" fungicides (Abound, Azaka, Flint, Pristine, Quadris Top, *NY†Reason, Sovran, †Topguard EQ) has developed in multiple NY vineyards, causing significant crop loss. Thus, it is now risky to rely on these fungicides for control of downy mildew, particularly in the prebloom through early postbloom period while fruit are highly susceptible. When such resistance occurs, none of these fungicides will provide commercial control of the disease, and they must be combined with an effective rate of an unrelated fungicide to avoid potential crop loss. If using these materials, it is recommended that they be applied a maximum of two times per year for all Group 11 products combined. NOTE: The boscalid component of Pristine has no activity against downy mildew, so unlike powdery mildew, it will not provide control of this disease when populations of the fungus are resistant to the strobilurin materials. Similarly, the difenoconazole component of Quadris Top and the flutriafol component of †Topguard EQ have no activity against downy mildew, so will nothelp control strobilurin-resistant populations either. Although Sovran has substantial activity against non-resistant downy mildew, it is significantly less effective than the other recommended materials. Therefore, Sovran is not recommended on highly susceptible varieties even where resistance is not yet a problem. CAUTION: DO NOT USE PRISTINE, REVUS TOP, OR QUADRIS TOP ON CONCORD OR NOIRET GRAPES (CAUSES INJURY). Make no more than two applications in total of any strobilurin or related "Group11" fungicide per year. Note that Quadris Top, AZAKA, Abound, topguard eq, and *NYDexter max are extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

ProPhyt

2-4 pt

ProPhyt, Phostrol, and Rampart are among several different products that contain phosphorous acid (phosphonate, phosphite) and are registered for control of downy mildew. Phosphonate products provide limited protective and good to very good postinfection activity. The labeled rate ranges given are intended to account for variable canopy densities and disease pressure: The lower rates are appropriate during the prebloom period, but they should be increased as canopy volumes increase rapidly after fruit set and/or when significant post-infection activity is required. All three products contain roughly comparable levels of active ingredient (Rampart has 7% less than the other two), and appear to provide comparable levels of control when used at the same rate of product. Optimum spray intervals depend on weather conditions and rate applied; 10 days appears to be effective, whereas 14 days is too long under heavy disease pressure. Refer to the discussion on "phosphorous acid" in the "Fungicides" section. IT IS IMPORTANT THAT USE OF THESE PRODUCTS BE LIMITED TO A MAXIUMUM OF THREE APPLICATIONS PER YEAR, WITH NO MORE THAN TWO SEQUENTIAL APPLICATIONS, IN ORDER TO DELAY RESISTANCE DEVELOPMENT.

OR

Phostrol

2.5-5 pt

OR

Rampart

2-6 pt

OR

Ridomil Gold MZ

2.5 lb

Resistance to Ridomil by the downy mildew organism develops easily and is widespread in countries where this fungicide has been used regularly. To reduce the risk of developing resistance: use no more than two total applications of Ridomil per season (MZ and Copper formulations combined); if making two applications in the same season, do not do so in consecutive sprays; and do not attempt "rescue" treatments with this material if an epidemic is in progress. The 2.5 lb rate of Ridomil Gold MZ provides the same amount of mancozeb as 2.0 lb of the 75 DF and 80WP formulations of Dithane, *NYManzate, or Penncozeb. Thus, if protection is needed against black rot, Phomopsis, angular leaf scorch, or anthracnose, tank mix with an additional 1-2 lb/A of these mancozeb products (or with an equivalent amount of a flowable mancozeb formulation), or with the full rate of an alternative material.

OR

*NYPresidio 2SC

3-4 fl oz

NOTE: Valent has pulled the grape use from the *NYPresidio label and any new product will not be legal for use on grapes. However, grape growers will be able to legally use up old stock of *NYPresidio with the grape use pattern on the label.

*NYPresidio and Revus are both relatively new, but unrelated, fungicides that control only downy mildew. Revus Top is a combination product that contains the active ingredient from Revus plus a second fungicide (difenoconazole, a DMI or Group 3 material) that controls powdery mildew, black rot, and anthracnose. Both *NYPresidio and the Revus products have proven to be very effective under high disease pressure. All are absorbed by plant tissues, so are not subject to wash-off once this has occurred, and they provide both protective and limited post-infection activity (*NYPresidio is likely to provide somewhat better post-infection activity; the post-infection activity of the Revus products is likely to be maximized by applying them with a penetrating surfactant). *NYPresidio is recommended for use at 12- to 14-day intervals with a 21-day PHI, and the label states that it must be tank-mixed with another downy mildew fungicide (for resistance management). Revus is labeled for use at 7-day intervals but has given very good to excellent control when applied on V. vinifera cultivars at 14-day intervals in several NY trials, even under high disease pressure; it has a 14-day PHI. Revus Top is labeled for use at 14-day intervals, and also has a 14-day PHI. CAUTION: DO NOT USE REVUS TOP ON CONCORD GRAPES (CAUSES INJURY).

OR

Revus 2SC

8 fl oz

or Revus Top 4SC

7 fl oz

OR

*NYGavel 75DF

2.0-2.5 lb

*NYGavel is a relatively new fungicide labeled for control of downy mildew and other diseases. It is a combination of two active ingredients: (i) zoxamide, a downy mildew-specific fungicide related to *NYPresidio; and (ii) mancozeb. When applied at the labeled rate of 2.0-2.5 lb/A, it provides the same amount of mancozeb as 1.8-2.2 lb of standard 75DF formulations of other mancozeb products such as Dithane, Penncozeb, etc. Thus, for control of labeled diseases other than downy mildew, *NYGavel should be tank-mixed with sufficient quantities of another mancozeb product to provide a mancozeb dosage equivalent to the labeled rates of 3-4lb/A of the 75DF formulations of such products. In a limited number of trials, *NYGavel has provided fair to good control of downy mildew when applied at 14-day intervals.

OR

Ranman 400SC

2.1-2.75 fl oz

Ranman is a new fungicide unrelated to any other registered product. It is active only against downy mildew, primarily as a protectant but with limited post-infection activity. It has provided good to excellent control in NY trials, and has been most effective when tank-mixed with a phosphonate product to provide additional post-infection activity.

OR

*NY†Zampro 4.4SC

11-14 fl oz

*NY†Zampro is a new fungicide active against only downy mildew. *NY†Zampro contains two downy mildew-specific active ingredients: (i) ametoctradin, representing a new class of chemistry, with no other representatives currently registered; and (ii) dimethomorph, a Group 40 fungicide similar to Revus. It is assumed to have good protective activity; some limited post-infection activity, greater than that of Revus or Revus Top; and anti-sporulant activity. It is labeled for use at 7-10 day intervals but has provided very good to excellent control on V. vinifera cultivars when used at 14-day intervals in several NY trials, even under high disease pressure. The label allows a maximum of four applications per season, but we recommend no more than three applications of *NY†Zampro and Revus (or Revus Top) combined, and no more than two sequential applications of these products (ideally, not even two applications in a row) before rotating to a product that does not contain a Group 40 material.

Anthracnose

Only a common problem on a few specific varieties, particularly Marquette and Reliance and, to a lesser extent, Vidal Blanc (see the entry under Anthracnose in Section 3.1, Vineyard Disease Management, for a list of other susceptible varieties and the weather conditions favoring its development). Only Rally, Inspire Super, Revus Top, Mettle, Quadris Top, and Pristine are specifically labeled for control of anthracnose, although traditional broad-spectrum fungicides also have activity against it. Experience with controlling anthracnose in NY and neighboring states suggests that sprays of mancozeb, ziram, or captan applied to control Phomopsis and other diseases during the early season are likely to provide control of anthracnose during that period as well. A spray of lime sulfur that is applied thoroughly at the "delayed dormant" stage will also provide some control, and can be used to supplement conventional fungicide programs in problem blocks or to substitute for them to some extent when conventional fungicides will not be used (e.g., "organic" production systems).

Angular leaf scorch

Various mancozeb products applied according to label directions for Phomopsis, black rot, or downy mildew management also have given good control of angular leaf scorch. The difenoconazole products (Inspire Super, Quadris Top, Revus Top) are labeled for control of rotbrenner, the European "cousin" of angular leaf scorch, which is caused by a very closely related fungus.

Rose chafer

Apply when beetles appear, or 7-10 days before bloom. Localized problems are most commonly found on sandy soils. Severity varies widely from year to year.

^Sevin 80 Solupak

2-2.5 lb

OR

*Danitol 2.4 EC

10.7-21.3 fl oz

OR

Assail 30 SG

2.5 oz

Grape Phylloxera
(leaf forms)

Apply when first galls are forming; spray again 10-12 days later. Many varieties can withstand extensive galling.

OR

*Danitol 2.4EC

10.7-21.3 fl oz

OR

Assail 30SG

2.5 oz

OR

*NY†Voliam Flexi

4.5 oz

Maximum of 9 fl oz per season.

OR

Movento

6-8 fl oz

Maximum of 12.5 fl oz Movento per season with 30 days between applications. Apply to foliage. Must be used with spray adjuvant/additive having spreading and penetrating properties. However, do not use Induce on grape when fruit is present. Also, certain adjuvants are not compatible with some pesticides leading to phytotoxicity; consult labels.

OR

*NY†Platinum

8-17 fl oz

Maximum of 17 fl oz per season. Systemic insecticide applied to the soil. Most effective when applied via drip irrigation.

Grape Phylloxera

(root form)

On susceptible cultivars, insecticidal control of root form grape phylloxera may improve vine health and vigor.

*NYAdmire Pro

14 fl oz

Most effective when applied through drip system, although can be applied as side dressing followed by sufficient water to move product into root zone. Split into two applications of 7 fl oz/A, first in spring around prebloom and second 30 days later.

OR

Movento

6-8 fl oz

Maximum of 12.5 fl oz Movento per season with 30 days between applications. Apply to foliage. Must be used with spray adjuvant/additive having spreading and penetrating properties. However, do not use Induce on grape when fruit is present. Also, certain adjuvants are not compatible with some pesticides leading to phytotoxicity; consult labels.

OR

*NY†Platinum

8-17 fl oz

Not for use on grapes in NYS. Maximum of 17 fl oz per season. Systemic insecticide applied to the soil. Most effective when applied via drip irrigation.

34391

5.2.8 BLOOM (when 80-90% of the caps have fallen)

Botrytis bunch rot

Fungicidal protection at bloom can be important during seasons that are wet and may be critical in such years on tight-clustered varieties, particularly those with early closing bunches (e.g., Vignoles). Somewhat lower rates (e.g., the low end of labeled rate ranges) can often be used at this time compared to what's necessary at veraison and pre-harvest IF good spray coverage is provided. All Botrytis fungicides are prone to resistance development after repeated use. Hence, it is important to follow the resistance management strategies detailed in the discussion on pesticide resistance management in Section 3.1 (e.g., maximum of two applications per year from any one Fungicide Group, never rely on one single Fungicide Group in any growing season).

Rovral 4F

1.5-2.0 pt

Rovral and generic iprodione products (e.g., Meteor) should be tank-mixed with a surfactant or oil to improve absorption by the berries. Research shows that this improves control.

OR

Meteor 4F

1.5-2.0 pt

OR

Vangard 75WG

10 oz

OR

Scala 5SC

18 fl oz

OR

†Switch 62.5 WG

11-14 oz

OR

Inspire Super

16-20 fl oz

A rate of 20 fl oz/A of Inspire Super provides the same amount of cyprodinil, the active ingredient in Vangard, as 7 oz/A of that product. This is likely to be an adequate dose at bloom under most conditions, although research data are limited; under high disease pressure, it might be necessary to tank mix with an additional 3 oz/A of Vangard or another Botrytis-active fungicide to obtain best control. This rate of Inspire Super also provides the same dose of difenoconazole - the Revus Top component active against powdery mildew, black rot, and anthracnose - as 7 fl oz/A (the labeled rate) of that product.

OR

Elevate 50WDG

1 lb

OR

Flint 50WG

3 oz

Research in VA has shown Botrytis resistance among the strobilurin (Group 11) materials to be common there; thus, it is also likely to occur in many NY and PA vineyards where these products have been used more than occasionally for a number of years, although this has not been investigated specifically. Nevertheless, based on our experiences with downy and powdery mildews, it is risky to rely on Flint or Flint Extra for control of Botrytis in vineyards with a significant history of strobilurin use, unless it is tank mixed with another product with good efficacy against this disease.

OR

Flint Extra

3.8 fl oz

OR

Endura 70WG

8 oz

OR

*NY†Luna Experience

6.0-8.6 fl oz

*NY†Luna Experience contains the traditional DMI (Group 3) fungicide tebuconazole, which has no significant activity against Botrytis, plus a new Group 7 material similar to boscalid (the non-strobie component of Pristine), which provides activity against powdery mildew and Botrytis. The 6.0-fl oz rate is adequate for powdery mildew and for Botrytis during the bloom and post-bloom period, but the 8.6 fl oz/A is likely to be necessary for reliable black rot control unless another product active against this dieases (e.g., mancozeb) is being used as well. It is recommended that the total number of applications of Group 7 materials (*NY†Luna Experience, Pristine, and Endura) be limited to no more than two per season.

OR

*NY†Luna Sensation

5.0-7.6 fl oz

*NY†Luna Sensation is another new product (first available in 2018) with the same fluopyram active ingredient, but combined with trifloxystrobin, a traditional strobilurin (Group 11) fungicide. Unlike Luna Experience, both active ingredients have good to excellent activity against Botrytis. The 5.0-7.6 fl oz label rate for Botrytis delivers a fluopyram dose equal to about 6.3 to 9.5 fl oz of Luna Experience (beyond the maximum rate of 8.6 fl oz for Botrytis control) and about the same amount of trifloxystrobin as 2.5-3.8 fl oz of Flint Extra and 2.5-3.8 oz of Flint. Therefore the middle of this range (about 6.3 fl oz) would just about match the recommended minimum dose of fluopyram in Luna Experience (8.0 fl oz) and the recommended dose of trifloxystrobin (3.0 oz) found in Flilnt for good to excellent Botrytis control needed at this time.Do not apply this product to Concord grapes or injury may occur.

OR

Pristine 38WG

18.5-23 oz

At rates typically used against other diseases, Pristine provides some suppression of Botrytis but should not be depended upon for control under moderately high disease pressure, particularly later in the season. In several tests, Pristine has provided good control when applied during the late bloom period at the highest rate labeled against other diseases (12.5 oz/A), also specified for Botrytis "suppression" on the label, and has provided very good to excellent control at a rate of 19 oz/A.

OR

^Intuity 4SC

6 fl oz

^Intuity is a strobilurin fungicide for control of Botrytis and suppression of powdery mildew. In limited NY and PA trials, ^Intuity provided good to fair control of Botrytis equivalent to current standards like Elevate, Vangard, Scala, and Switch. Do not use on V. labrusca, V. labrusca hybrids or other non-vinifera hybrids. Avoid mixing with organosilicone surfactants.

OR

Botector

6-8 oz

Botector is a preparation of a living yeast-like organism that competes with the Botrytis fungus for colonization sites on the grape flowers and berries. It provides protective activity only and can be killed by some broad-spectrum fungicides used for managing other diseases. Fracture is a fragment of a naturally-occuring plant protein that has activity against some fungi. Both products have provided fair to good control in a limited number of NY trials with moderate disease pressure.

OR

Fracture

24.6-36.6 fl oz

OR

^Miravis Prime

10.3-13.4 fl oz

^Miravis Prime is a combination of a new succinate dehydrogenase inhibitor fungicide (SDHI, Group 7) and fludioxonil (Group 12), introduced about 25 years ago for Botrytis control. Fludioxonil is also found in another combination product called Switch for Botrytis control. Most, if not all of the activity against Botrytis comes from fludioxonil. The 10.3-13.4 fl oz rate of ^Miravis Prime delivers the same amount of fludioxonil as the 11-14 oz labe rate range of Switch.

34392

5.2.9 FIRST POSTBLOOM SPRAY (10-14 days after immediate prebloom)

Phomopsis cane and leaf spot (rachis and fruit infections)

Fruit infections can occur from bloom through pea-sized berries then remain dormant until late summer or early fall, when they reactivate and rot the berries. In hedged or other high-risk vineyards (those with a history of the disease, with poor air movement near woods, etc.), significant pre-harvest fruit rot can develop on highly susceptible cultivars, such as Niagara, if the bloom and early postbloom period is wet and fungicidal protection is absent. Rachises also remain susceptible during this period.

*NYDithane DF,

3-4 lb

Although the strobilurin products (Abound, Azaka, Sovran, Flint/Flint Extra, Pristine) are less effective against Phomopsis than the others listed, they appear to provide adequate protection at this time, especially if the more-active products were used earlier in the season.

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

2.4-3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Captan 50WP

2-4 lb

OR

Captan 80WDG

1.25-2.5 lb

OR

Captec 4L

1.5-2.0 qt

OR

Ziram 76DF

4 lb

OR

Abound 2SC

11-15 fl oz

OR

Azaka 2SC

11-15 fl oz

OR

Sovran 50WG

3.2-4.8 oz

OR

Flint 50WG

3.0 oz

OR

Flint Extra

3.8 fl oz

OR

Pristine 38WG

8-12.5 oz

CAUTION: Do not use Pristine on Concord or Noiret grapes (causes injury).

Black rot

This is perhaps THE most critical spray for black rot control.

*NYDithane DF,

4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Ziram 76DF

4 lb

Ziram provides good control of black rot but is only fair against downy mildew; it is recommended primarily for juice grape growers whose processors will not allow the use of mancozeb products after bloom.

OR

Rally 40WSP

4-5 oz

The DMI (Group 3) fungicides (difenconazole products [Revus Top, Inspire Super, Quadris Top, *NYAprovia Top], Rally, generic tebuconazole products, Mettle, and flutriafol products (†Rhyme, †Topguard EQ) and the strobilurin fungicides (Abound, Azaka, Sovran, Flint, Pristine) have provided the best control of black rot under heavy disease pressure. Not coincidentally, they are also less likely to wash off in the rain than are mancozeb and ziram products. The Group 3 fungicides provide limited (several days) "forward" protective activity and up to one week of postinfection ("backward") activity. This combination of "forward" and "backward" activity accounts for their high efficacy when applied at regular 10- to 14-day spray intervals, but their limited protective activity should be considered when they are followed by materials that have little to no postinfection activity, such as the strobilurins, mancozeb, or ziram. The protective activity of sprays containing the Group 3 materials is increased when they are tank-mixed with mancozeb or ziram, included also for control of downy mildew (ziram is less effective) and Phomopsis. The azoxystrobin contained in the combination products, Quadris Top and †Topguard EQ, will also provide additional protective ability against black rot; note, however, that the dose of azoxystrobin provided by the lowest rate (5 fl oz) of †Topguard EQ is only 61%. as much as provided by the lowest rate (12 fl oz) of Quadris Top, and that both of these products provide suboptimal doses of their Group 3 component when used at these lowest rates; thus, under pressure conditions, the high end of the label rate range is likely to be more effective. CAUTION: DO NOT USE FLINT, INSPIRE SUPER, PRISTINE, QUADRIS TOP, *NYAPROVIA TOP, OR REVUS TOP ON CONCORD GRAPES (CAUSES INJURY). CHECK INDIVIDUAL LABELS FOR OTHER CULTIVARS THAT MIGHT ALSO BE AFFECTED.

OR

Mettle 1ME

5 fl oz

OR

†Rhyme 2.08SC

5 fl oz

OR

Revus Top 4SC

7 fl oz

or Inspire Super

16-20 fl oz

OR

Flint 50WG

1.5-2.0 oz

OR

Flint Extra

3.5-3.8 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Abound 2SC

11-15 fl oz

OR

Pristine 38WG

8-12.5 oz

OR

Quadris Top 2.7SC

12-14 fl oz

OR

*NYAprovia Top 1.6EC

8.5-13.3 fl oz

OR

†Topguard EQ 4.3SC

5-6 fl oz

OR

*NY†Luna Experience

6.0-8.6 fl oz

The 6.0-fl oz rate of *NY†Luna Experience is adequate for control of powdery mildew and Botrytis during the bloom and post-bloom period, but the 8.6 fl oz/A is likely to be necessary for reliable black rot control unless another product active against this dieases (e.g., mancozeb) is being used as well. It is recommended that the total number of applications of Group 7 materials (*NY†Luna Experience, Pristine, Endura [no black rot activity], *NYAprovia [only moderate black rot activity]), and *NYAprovia Top be limited to no more than two per season.

OR

*NY†Luna Sensation

5.0-7.6 fl oz

*NY†Luna Sensation is another new product (first available in 2018) with the same fluopyram active ingredient, but combined with trifloxystrobin, a traditional strobilurin (Group 11) fungicide, very effective against black rot. It should provide good to excellent control of this disease at the 5.0-7.6 fl oz label rates. Do not apply this product to Concord grapes or injury may occur.

OR

^Miravis Prime

9.2-13.4 fl oz

^Miravis Prime has provided excellent control of black rot in PA trials at the 11.4 and 13.4 fl oz rates.

Powdery mildew

THIS IS THE MOST CRITICAL TIME OF THE YEAR FOR CONTROL OF CLUSTER INFECTIONS. Spray programs should be "tightened," especially on highly susceptible varieties (see Table 3.2.2) and/or if cloudy warm days and nights prevail during this period. Pay particular attention to choice of fungicides, rate, spray interval, and coverage.

Liquid Sulfur 6L

see labels, rates vary

OR

Wettable Sulfur (several formulations)

see labels, rates vary

OR

*NYViticure 4SC

6-8 fl oz

NOTE the increased rates of some materials after bloom.

 

CAUTION: Widespread "partial" resistance to the sterol inhibitor or DMI (Group 3) fungicides (generic tebuconazole products, Mettle, Rally, difenoconazole [Group 3 component of Revus Top, Inspire Super, Quadris Top, *NYAprovia Top], †Rhyme, †Topguard EQ, *NYViticure, *NYProcure, *NYTrionic) has limited their usefulness during this critical period. Thus, most are not recommended on V. vinifera or highly susceptible hybrid cultivars from the immediate prebloom through early postbloom stage of development. However, Revus Top has provided very good to excellent control even on such cultivars in several repeated trials where other DMI fungicides sometimes did not (as have Inspire Super, Quadris Top, and *NYAprovia Top when applied at their top label rsates, which provide a dose of difenoconazole equivalent to Revus Top). Nevertheless, some premium powdery mildew products have sometimes given better control than even this best of the Group 3 fungicides. It is strongly recommended that growers make no more than three applications of all Group 3 products combined in any one season, in order to minimize further loss of sensitivity to them. CAUTION: DO NOT USE REVUS TOP, QUADRIS TOP, INSPIRE SUPER, OR *NYAPROVIA TOP ON CONCORD GRAPES (CAUSES INJURY). CHECK INDIVIDUAL LABELS FOR OTHER CULTIVARS THAT MIGHT ALSO BE AFFECTED.

OR

*NYProcure 480SC

6-8 fl oz

OR

*NYTrionic 4SC

6-8 fl oz

OR

Rally 40WSP

5 oz

OR

Revus Top 4SC

7 fl oz

or Inspire Super

16-20 fl oz

OR

JMS Stylet Oil

1-2% conc., see label

Refer to JMS Stylet Oil and Purespray Green labels for potential compatibility problems with other spray materials.

OR

Purespray Green

1-2% conc.

OR

Nutrol

4 lb

Refer to previous comments about this group of products.

OR

Kaligreen 82 SP

2.5 lb

OR

^Armicarb 85WG

2.5 lb

OR

Milstop 85WG

2.5 lb

OR

Mettle 1 ME

5 fl oz

OR

†Rhyme 2.08SC

5 fl oz

OR

Flint 50WG

1.5-2.0 oz

CAUTION: Powdery mildew resistance to the strobilurin fungicides is common. Please refer to the discussion concerning powdery mildew resistance to these fungicides that is provided in the "Immediate Prebloom" section.

OR

Flint Extra

3.0-3.5 fl oz

OR

Sovran 50WG

3.2-4.0 oz

Quadris Top is a product that combines azoxystrobin (the active ingredient in Abound) and difenoconazole, the Group 3 component in Revus Top and Inspire Super. Note, that at the lowest label rate of 12 fl oz/A, Quadris Top provides 87% the dose of difenoconazole provided by the label rate (7 fl oz/A) of Revus Top and a dose of azoxystrobin equivalent to the lowest label rate of Abound. At 14 fl oz/A, Quadris Top provides a difenoconazole dose equivalent to that provided by the label rate of Revus Top. †Topguard EQ similarly combines azoxystrobin and a different Group 3 fungicide (flutriafol), the active ingredient in †Rhyme. However, at rates labeled for powdery mildew control, it provides significantly lower doses of azoxystrobin and a less effective Group 3 fungicide than does Quadris Top.

CAUTION: DO NOT USE PRISTINE, QUADRIS TOP, *NYAprovia top, OR FLINT ON CONCORD GRAPES OR PRISTINE ON NOIRET GRAPES (CAUSES INJURY). CHECK INDIVIDUAL LABELS FOR OTHER CULTIVARS THAT MIGHT ALSO BE AFFECTED.

 

Note that Quadris Top, Abound, AZAKA, TOPGUARD EQ, and *NYdexter max are extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry within Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

Abound 2SC

11-15 fl oz

OR

Azaka 2SC

11-15 fl oz

OR

Pristine 38WG

10-12.5 oz

OR

Quadris Top 2.7SC

12-14 fl oz

OR

†Topguard EQ

5-6 fl oz

OR

Endura 70WG

4.5 oz

OR

Quintec 2SC

4 fl oz

OR

Vivando 2.5SC

10.3-15.4 fl oz

Vivando and Prolivo are similar products with an active ingredient in the same chemical class and should provide similar (good to excellent) levels of powdery mildew control.

OR

Prolivo 300 SC

4-5 fl oz

OR

Torino 120 SC

3.4 fl oz

Torino, another powdery mildew-specific fungicide in a unique chemical family, first became available in most states in 2013 and is now registered in NY as well. It has provided good to very good control in repeated NY trials. The label allows a maximum of two applications per year.

OR

*NY†Luna Experience

6.0-8.6 fl oz

*NY†Luna Experience is a new product first available in 2013. It combines fluopyram, a new "Group 7" fungicide similar to boscalid (the non-strobie component of Pristine) with tebuconazole, a traditional DMI (Group 3) fungicide. It has provided excellent activity against powdery mildew in multiple trials. The 6.0-fl oz rate is adequate for powdery mildew and for Botrytis during the bloom and post-bloom period, but the 8.6 fl oz/A is likely to be necessary for reliable black rot control unless another product active against this dieases (e.g., mancozeb) is being used as well.

OR

*NY†Luna Sensation

4.0-7.6 fl oz

*NY†Luna Sensation is another new product (first available in 2018) with the same fluopyram active ingredient, but combined with trifloxystrobin, a traditional strobilurin (Group 11) fungicide. The 4.0-7.6 fl oz label rate delivers a wider range of fluopyram than the 6.0-8.6 fl oz powdery mildew rate on the *NY†Luna Experience label. For example, 6.0 and 8.6 fl ozs of *NY†Luna Experience actually delivers a dose of fluopyram equivalent to 4.8 and 6.8 fl ozs of *NY†Luna Sensation. That same 4.0-7.6 fl oz powdery mildew rate also delivers about the same amount of trifloxystrobin as 2.0-3.8 fl oz of Flint Extra, adequate for good to excellent black rot control as well. Do not apply this product to Concord grapes or injury may occur.

OR

*NYAprovia 0.83EC

8.6-10.5 fl oz

*NYAprovia is another new Group 7 fungicide first registered for the 2016 season; it is a solo product (not combined with another active ingredient). *NYAprovia has provided excellent activity against powdery mildew in multiple trials, but has not provided reliable activity against any other disease.

OR

*NYAprovia Top 1.6EC

8.5-13.3 fl oz

*NYAprovia Top is a relatively new product that combines the active ingredient contained in *NYAprovia plus an effective rate of the DMI fungicide difenoconazole: both active ingredients have considerable activity against powdery mildew.

CAUTION: DO NOT USE *NYAPROVIA TOP ON CONCORD GRAPES (CAUSES INJURY).

^Miravis Prime is a combination of a new succinate dehydrogenase inhibitor fungicide (SDHI, Group 7) and fludioxonil (Group 12). In NY and PA trials, ^Miravis Prime has provided high levels of powdery mildew control.

It is recommended that the total number of applications of Group 7 materials (*NY†Luna Experience, Pristine, Endura, and *NYAprovia) be limited to no more than two per season, preferably not in sequence.

OR

^Miravis Prime

9.2-13.4 fl oz

OR

Double Nickel LC

2 qt

Double Nickel is a biopesticide sold in both liquid and WDG formulations. It requires relatively short spray intervals and has provided fair to very good results in NY trials, depending on cultivar susceptibility. It has been most effective on moderately susceptible cultivars rather than highly susceptible cultivars such as Chardonnay.

or Double Nickel 55

1 lb

OR

Oso 5SC

6.5 fl oz

Oso and Ph-D are relatively new products that contain the same, older active ingredient. They have provided good to very good results in NY trials when rotated with strong conventional materials. However, they should not be relied upon at this particularly critical time on V. vinifera and other highly susceptible cultivars.

or Ph-D 89WDG

6.2 oz

OR

Regalia

1-4 qts (see label)

Regalia is a biopesticide that has provided fair to very good control of powdery mildew in NY trials, depending on disease pressure. It is likely to work best on less susceptible varieties or at times of year when pressure is low. Different rates are recommended depending on whether it is used alone or in a tank mix. Because Regalia requires 48 hours to activate plant defenses, applications need to start before infection. Regalia should only be considered for powdery mildew control during post bloom in an organic spray program. It should not be relied on for conventional powdery mildew control during this critical window.

OR

Fracture

20.5-24.4 fl oz

Fracture is a biopesticide that has provided fair to good control of powdery mildew in NY and PA trials. It should only be considered for powdery mildew control during post bloom in an organic spray program. It should not be relied on for conventional powdery mildew control during this critical window. No more than 5 applications can be made during the season, and Fracture may be applied no more than twice before alternating with a product that has a different mode of action.

Downy mildew

This is a very important spray for controlling downy mildew.

*NYDithane DF

4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

or *NYPenncozeb 80WP

OR

*NYDithane F-45

3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Captan 50 WP

4 lb

OR

Captan 80 WDG

2.5 lb

OR

Captec 4L

2 qt

OR

Ridomil Gold/ Copper

2 lb

Resistance to Ridomil by the downy mildew organism develops easily and is widespread in countries where this fungicide has been used regularly. To reduce the risk of developing resistance, use no more than one to two total applications of Ridomil per season (MZ and Copper formulations combined), do not apply two applications in a row, and do not attempt "rescue" treatments with this material if an epidemic is in progress.

The 2.5 lb rate of Ridomil Gold MZ provides the same amount of mancozeb as 2.0 lb of the 75 DF and 80WP formulations of Dithane, *NYManzate, or Penncozeb. Thus, if protection is needed against black rot, Phomopsis, angular leaf scorch, or anthracnose, tank mix with an additional 1-2 lb/A of these mancozeb products (or with an equivalent amount of a flowable mancozeb formulation), or with the full rate of an alternative material. The 2-lb rate of Ridomil Gold/Copper contains 1.2 lb of copper hydroxide (equivalent to 1.6 lb of ^Kocide 101). Hence, follow the usual precautions pertaining to the use of coppers. Do not apply Ridomil Gold MZ within 66 days of harvest; Ridomil Gold Copper may be applied up to 42 days before harvest.

OR

Ridomil Gold MZ WG

2.5 lb

OR

Abound 2SC

Azaka 2SC

Quadris Top 2.7SC

†Topguard EQ 4.3SC

Sovran 50WG

Pristine 38WG

*NYReason 500SC

not recom-mended for use alone

CAUTION: Downy mildew resistance to the "Group 11" fungicides (Abound, Azaka, Flint, Pristine, Quadris Top, *NY†Reason, Sovran, †Topguard EQ) has developed in multiple NY vineyards, causing significant crop loss. Thus, it is now risky to rely on these fungicides for control of downy mildew, particularly in the prebloom through early postbloom period while fruit are highly susceptible. When such resistance occurs, none of these fungicides will provide commercial control of the disease, and they must be combined with an effective rate of an unrelated fungicide to avoid potential crop loss. If using these materials, it is recommended that they be applied a maximum of two times per year for all Group 11 products combined. Note that neither the boscalid component of Pristine, the difenoconazole component of Quadris Top, nor the flutriafol component of †Topguard EQ provide control of downy mildew and so will not help to manage strobilurin-resistant populations. CAUTION: Do not use Quadris Top on Concord grapes (causes injury). Note that Quadris Top, Abound, Azaka, topguard eq, and *NYdexter max are extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See Section 3.2 for information concerning ABOUND and QUADRIS TOP and the use of these fungicides in Pennsylvania.

 

Sovran has significant activity against non-resistant downy mildew, but it is not as effective as Pristine or the azoxystrobin products. Therefore, Sovran is not recommended on highly susceptible varieties even where resistance to the Group 11 fungicides is not yet a problem; if using Sovran on such varieties, tank mix with a protectant fungicide active against downy mildew.

OR

ProPhyt

2-4 pt

ProPhyt and Phostrol are among several products containing phosphorous acid (phosphonate, phosphite) that are registered for control of downy mildew. Phosphonate products provide limited protective and good to very good postinfection activity. The labeled rate ranges given are intended to account for variable canopy densities and disease pressure: The lower rates are appropriate during the prebloom period, but they should be increased as canopy volumes increase rapidly after fruit set and/or when significant post-infection activity is required. Prophyt and Phostrol contain comparable levels of active ingredient and Rampart contains about 7% less; all appear to provide comparable levels of control when used at the same rate of product. Optimum spray intervals depend on weather conditions and rate applied; 10 days appears to be effective, whereas 14 days is too long under heavy disease pressure. Refer to the discussion on "phosphorous acid" in the "Fungicides" section.

OR

Phostrol

2.5-5 pt

OR

Rampart

2-6 pt

OR

*NYPresidio 2SC

3-4 fl oz

NOTE: Valent has pulled the grape use from the *NYPresidio label and any new product will not be legal for use on grapes. However, grape growers will be able to legally use up old stock of *NYPresidio with the grape use pattern on the label.

 

*NYPresidio and Revus are both relatively new, but unrelated, fungicides that control only downy mildew. Revus Top is a combination product that contains the active ingredient from Revus plus a second fungicide (difenoconazole, a DMI or Group 3 material) that controls powdery mildew, black rot, and anthracnose. Both *NYPresidio and the Revus products have proven to be very effective under high disease pressure. Both are absorbed by plant tissues, so are not subject to wash-off once this has occurred, and they provide both post-infection and protective activities (*NYPresidio is likely to provide somewhat better post-infection activity; the post-infection activity of the Revus products is likely to be maximized by applying them with a penetrating surfactant). *NYPresidio is recommended for use at 12- to 14-day intervals with a 21-day PHI, and the label states that it must be tank-mixed with another downy mildew fungicide (for resistance management). Revus is labeled for use at 7-day intervals but has given very good to excellent control when applied on V. vinifera cultivars at

OR

Revus 2SC

8 fl oz

or Revus Top 4SC

7 fl oz

14-day intervals in several NY trials; it has a 14-day PHI. Revus Top is labeled for use at 14-day intervals, and also has a 14-day PHI.

CAUTION: DO NOT USE PRISTINE, QUADRIS TOP, OR REVUS TOP ON CONCORD GRAPES (CAUSES INJURY). CHECK INDIVIDUAL LABELS FOR OTHER CULTIVARS THAT MIGHT ALSO BE AFFECTED.

OR

*NYGavel 75DF

2.0-2.5 lb

*NYGavel is a relatively new fungicide labeled for control of downy mildew and other diseases. It is a combination of two active ingredients: (i) zoxamide, a downy mildew-specific fungicide related to *NYPresidio; and (ii) mancozeb. When applied at the labeled rate of 2.0-2.5 lb/A, it provides the same amount of mancozeb as 1.8-2.2 lb of standard 75DF formulations of other mancozeb products such as Dithane, Penncozeb, etc. Thus, for control of labeled diseases other than downy mildew, *NYGavel should be tank-mixed with sufficient quantities of another mancozeb product to provide a mancozeb dosage equivalent to the labeled rates of 3-4 lb/A of the 75DF formulations of such products. In a limited number of trials, *NYGavel has provided fair to good control of downy mildew when applied at 14-day intervals.

OR

Ranman 400SC

2.1-2.75 fl oz

Ranman is a new fungicide unrelated to any other registered product. It is active only against downy mildew, primarily as a protectant but with limited post-infection activity. It has provided good to excellent control in NY trials and has been most effective when tank-mixed with a phosphonate product to provide additional post-infection control.

OR

*NY†Zampro 4.4SC

11-14 fl oz

*NY†Zampro is a new fungicide active against only downy mildew. *NY†Zampro contains two downy mildew-specific active ingredients: (i) acetoctradin, representing a new class of chemistry, with no other representatives currently registered; and (ii) dimethomorph, a Group 40 fungicide similar to Revus. It is assumed to have good protective activity; some limited post-infection activity; and anti-sporulant activity. It is labeled for use at 7-10 day intervals but has provided good to excellent control when used at 14-day intervals on V. vinifera cultivars in several NY trials. The label allows a maximum of four applications per season, but we recommend no more than three applications of *NY†Zampro and Revus (or Revus Top) combined, and no more than two sequential applications of these products before rotating to a product that does not contain a Group 40 material.

Anthracnose

Only a common problem on a few specific varieties, particularly Marquette and Reliance and, to a lesser extent, Vidal Blanc (see the entry under Anthracnose in Section 3.1, Vineyard Disease Management, for a list of other susceptible varieties and the weather conditions favoring its development). Only Rally, Inspire Super, Revus Top, Mettle, Quadris Top, and Pristine are specifically labeled for control of anthracnose, although traditional broad-spectrum fungicides also have activity against it. Experience with controlling anthracnose in NY and neighboring states suggests that sprays of mancozeb, ziram, or captan applied to control other diseases are likely to provide control of anthracnose as well.

Grape berry moth

Classify vineyards as low, intermediate, or high risk of grape berry moth attack, using established protocols. See New York Food and Life Sciences Bulletin No. 138 for GBM risk assessment protocols, or contact the Grape IPM program. High- and intermediate-risk vineyards receive insecticide treatment at this time. Low-risk vineyards do not need to be treated at this time. Use a spreader-sticker (at corresponding label rates) when recommended. This spray is timed to coincide with peak egg-laying of GBM which, in most years, occurs 7-14 days after the mid-bloom period. Good spray coverage of the clusters must be achieved to control grape berry moth. Note that ^Intrepid is more effective when applied at start of egg-laying. Timing of sprays is best accomplished using the grape berry moth degree day model available at the Network for Environment and Weather Applications (NEWA): newa.cornell.edu/index.php?page=crop-page-grapes.

 

A minimum of 50 gallons of water per acre, every row, should be used at this time. Grape berry moth resistance to carbaryl (Sevin) has been demonstrated in some vineyards in the Lake Erie Grape Belt. If carbaryl (Sevin) or any other insecticide used does not control grape berry moth, do not repeat application with the same material or with the same mode of action. Regardless of control, it is recommended that insecticides with different modes of action be used during the season. If control of grape berry moth is a problem, then reexamine your management practices (e.g. choice of insecticides, spray timings, spray coverage, etc.).

Sevin 4F

2 qt

Efficacy of carbaryl products such as Sevin has dropped in recent years, especially in the Lake Erie region, probably due to resistance.

or ^Sevin 80 Solupak

2.5 lb

or Sevin XLR Plus

2 qt

OR

*NYImidan 70W

1.33-2.125 lb

OR

Dipel DF

read the label

If using Dipel DF, Biobit, or Deliver, proper timing is critical for control. Scout vineyards carefully, apply when larval feeding begins, and repeat after 5-7 days.

OR

Deliver

0.5-2 lb

OR

Biobit

0.5-1 lb

OR

Entrust SC

4-8 fl oz

No more than two consecutive applications. Max of 29 fl oz per season.

OR

*Danitol 2.4EC

10.7-21.3 fl oz

*Danitol 2.4 EC is a broad-spectrum insecticide with some miticidal activity. Frequent use may disrupt biological control of spider mites.

OR

^*Mustang Max

4 fl oz

Maximum 24 fl oz per season.

OR

*Hero

4-10.3 fl oz

Maximum 10.3 fl oz *Hero per season

OR

*Brigade 2EC

3.2-6.4 fl oz

Maximum of 6.4 fl oz per season

or *Brigade WSB

8-16 oz

or *Bifenture 10DF

8-16 oz

or *Bifenture 2EC

3.2-6.4 fl oz

or *Sniper

3.2-6.4 fl oz

OR

^*Triple Crown

5 fl oz

Maximum of 10.2 fl oz/A per season.

OR

*Brigadier

5.1-6.4 fl oz

Maximum of 12.8 oz per season

OR

*Baythroid XL

2.4-3.2 fl oz

Maximum of 12.8 fl oz per season

OR

*Leverage 360

3.2-6.4 fl oz

Maximum of 6.4 fl oz per season

OR

^Intrepid 2F

8-16 fl oz

DEC approval for use of ^Intrepid on grapes in NY is pending. Although it is not legal to use in NY, it is legal to use in Pennsylvania. ^Intrepid is most effective when applied at the start of egg-laying rather than at egg-hatch. Hence, ^Intrepid should be applied somewhat earlier than broad-spectrum materials such as carbaryl.

OR

Avaunt

5.0-6.0 oz

Avaunt is most effective when applied at start of egg-laying. Label recommends use of an adjuvant. Avaunt also provides some suppression of leafhoppers.

OR

Delegate WG

3-5 oz

Maximum of 19.5 oz/A/year.

OR

*NYAltacor

2-4.5 oz

Maximum 9 oz *NYAltacor per acre per season.

OR

*NY†Voliam Flexi

4.5 oz

Maximum of 9 oz *NY†Voliam Flexi per season.

OR

*NY†Belt

3-4 fl oz

Maximum of 12 fl oz per acre per season.

OR

*NY†Tourismo

10-14 fl oz

Maximum of 37 fl oz/A per season.

OR

 Knack

16 fl oz

Not to exceed 32 fl oz/A per season.

Grape leafhoppers

Finger Lakes growers of Concord and other native grape cultivars should monitor leafhopper populations carefully, as resistance is suspected in isolated vineyards of the region.

Sevin 4F

1-2 qt

If carbaryl fails to control leafhoppers, do not repeat application of the material. Application of other materials with different modes of action is recommended.

 

Trials in NYS vineyards have shown reduced rates of Sevin 4F provide effective management of leafhoppers. However, if grape berry moth management is also needed, a full rate of insecticide is required to ensure adequate management of this pest.

OR

Sevin XLR Plus

1-2 qt

OR

^Sevin 80 Solupak

1.5-2.25 lb

OR

*Brigade 2EC

3.2-6.4 fl oz

Labeled for eastern and western grape leafhopper. Maximum of 6.4 fl oz *Brigade 2 EC per season.

or *Brigade WSB

8-16 oz

or *Bifenture 10DF

8-16 oz

or *Bifenture 2EC

3.2-6.4 fl oz

or *Sniper

3.2-6.4 fl oz

OR

*Brigadier

3.8-6.4 fl oz

Labeled for eastern and western grape leafhopper. Maximum of 12.8 oz *Brigadier per season.

OR

*Baythroid XL

2.4-3.2 fl oz

Maximum of 12.8 fl oz *Baythroid XL per season.

OR

*Leverage 360

2.4-3.2 fl oz

Maximum of 6.4 fl oz *Leverage 360 per season.

OR

^*Mustang Max

4 fl oz

Maximum 24 fl oz ^*Mustang Max per season. Eastern grape leafhopper only.

OR

*Hero

4-10.3 fl oz

Maximum 10.3 fl oz *Hero per season. Eastern grape leafhopper only.

OR

M-Pede

read the label

Leafhopper problems are usually localized. If using M-Pede, apply early in the day or when humidity is high and temperatures moderate. Consult label for information on using M-Pede with high mineral-content water and other materials. M-Pede may cause phytotoxicity to Concords under certain environmental conditions.

OR

^Provado 75% WSP

0.75-1.0 oz

In insecticide trials conducted over the last several years, *NYProvado effectively managed leafhopper populations. Maximum of 0.1 lb imidacloprid (ai) per season. Take into account ai if using more than one product that contains imidacloprid.

OR

*NYProvado 1.6F

3-4 fl oz

OR

*NYPasada 1.6F

3.5 fl oz

Maximum of 8 fl oz of *NYPasada 1.6F per season.

OR

^Pasada 75W

0.8-1.0 oz

Maximum of 2.0 oz of ^Pasada 75W per season.

OR

*NYAdmire Pro

7-14 fl oz (soil); 1-1.4 fl oz (foliar)

Maximum 2.8 fl oz/A foliar per season, Maximum of 14 fl oz of *NYAdmire Pro soil applied per season.

OR

^Admire 2F

16-32 fl oz

Maximum of 32 fl oz of ^Admire 2F per season.

OR

*NYAlias 4F

8-16 fl oz (soil); 1.2-1.6 (foliar)

Maximum of 16 fl oz of *NYAlias 4F per season when applied as soil treatment and maximum of 3.2 fl oz as foliar.

OR

*NY†Actara

1.5-3.5 oz

Maximum of 7.0 oz/A per season of *NY†Actara allowed. Minimum spray interval is 14 days. Not for use in Nassau and Suffolk counties in NY.

OR

*NY†Platinum

8-17 fl oz

Maximum of 17 fl oz *NY†Platinum per season. Systemic insecticide applied to the soil. Most effective when applied via drip irrigation.

OR

*Danitol 2.4EC

5.3-10.6 fl oz

*Danitol 2.4EC is a broad-spectrum insecticide with some miticidal activity. Frequent use may disrupt biological control of spider mites.

OR

^*Triple Crown

5 fl oz

Maximum of 10.2 fl oz/A per season.

OR

Assail 30SG

2.5 oz

OR

*NY†Applaud 70DF

9-12 oz

Maximum of 24 oz *NY†Applaud per season. Allow at least 14 days between applications and maximum of 2 applications per season. Not for use in Nassau and Suffolk counties in NY.

OR

^Venom

1-3 oz

OR

^Clutch

1-2 oz

OR

*NY†Voliam Flexi

4.5 oz

Maximum of 9 oz *NY†Voliam Flexi per acre season.

OR

*NY†Sivanto Prime

7-14 fl oz

Not to exceed 28 fl oz/A per season. Minimum interval between applications is 10 days.

Potato leafhopper

M-Pede

read the label

If using M-Pede, apply early in the day or when humidity is high and temperatures are moderate. Consult label for information on using M-Pede with high mineral-content water and other materials. M-Pede may cause phytotoxicity under certain environmental conditions.

OR

^Sevin 80 Solupak

1.25-2.5 lb

OR

Sevin 4F

1-2 qt

OR

Sevin XLR Plus

1-2 qt

OR

^Provado 75% WSP

0.75 to 1.0 oz

Maximum of 0.1 lb imidacloprid (ai) per season. Take into account that more than one product that contains imidacloprid. ^Provado 75% WSP. *NYProvado 1.6F,

OR

*NYProvado 1.6F

3-4 fl oz

*NYPasada 1.6F, *NYPasada 75W, *NYAdmire Pro, ^Admire 2F, and *NYAlias 4F all contain imidacloprid as does *Leverage 360.

OR

*NYPasada 1.6F

3.5 fl oz

Maximum of 8 fl oz of *NYPasada 1.6F per season.

OR

^Pasada 75W

0.8-1.0 oz

Maximum of 2.0 oz of ^Pasada 75W per season.

OR

*NYAdmire Pro

1-1.4 fl oz (foliar), 7-14 fl oz (soil)

Maximum 2.8 fl oz/A foliar per season, Maximum of 14 fl oz of *NYAdmire Pro soil applied per season.

OR

^Admire 2F

16-32 fl oz

Maximum of 32 fl oz of ^Admire 2F per season.

OR

*NYAlias 4F

8-16 fl oz soil, 1.2-1.6 as foliar

Maximum of 16 fl oz of *NYAlias 4F per season when applied as soil treatment and maximum of 3.2 fl oz as foliar.

OR

*NY†Actara

1.5-3.5 oz

Maximum of 7.0 oz/A per season of *NY†Actara allowed. Minimum spray interval is 14 days. Not for use in Nassau and Suffolk counties in NY.

OR

*NY†Platinum

8-17 fl oz

Maximum of 17 fl oz *NY†Platinum per season. Systemic insecticide applied to the soil. Most effective when applied via drip irrigation.

OR

*Danitol 2.4EC

5.3-10.6 fl oz

*Danitol 2.4EC is a broad-spectrum insecticide with some miticidal activity. Frequent use may disrupt biological control of spider mites.

OR

^*Triple Crown

5 fl oz

Maximum of 10.2 fl oz/A per season.

OR

*Leverage 360

2.6-3.2 fl oz

Maximum of 6.4 fl oz *Leverage 360 per season.

OR

Assail 30SG

2.5 oz

OR

*NY†Applaud 70DF

9-12 oz

Maximum of 24 oz *NY†Applaud per season. Allow at least 14 days between applications and maximum of 2 applications per season. Not for use in Nassau and Suffolk counties in NY.

OR

*NY†Voliam Flexi

4.5 oz

Maximum of 9 oz *NY†Voliam Flexi per acre per season.

OR

*NY†Sivanto Prime

7-14 fl oz

Not to exceed 28 fl oz/A per season. Minimum interval between applications is 10 days.

34393

5.2.10 SECOND POSTBLOOM SPRAY (7-14 days after first postbloom spray)

Black rot

Ziram 76DF

4 lb

OR

*NYDithane DF

4 lb

Mancozeb products may not be used within 66 days of harvest.

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Rally 40WSP

4-5 oz

Refer to the discussion above in the "Immediate Prebloom" and "1st Postbloom" sections concerning the activities of these Group 3 fungicides (Rally, Mettle, Revus Top/Inspire Super/*NYAprovia Top, †Rhyme) and the Group 3/azoxystrobin mixes (Quadris Top, †Topguard EQ) for control of black rot.

OR

Mettle 1ME

5 oz

OR

†Rhyme 2.08SC

5 fl oz

OR

Revus Top 4SC

7 fl oz

CAUTION: Do not use Revus Top, Inspire Super, Quadris Top, or *NYAPROVIA TOP on Concord grapes (causes injury). Check label for other problem cultivars.

or Inspire Super

16-20 fl oz

OR

Quadris Top 2.7SC

12-14 fl oz

OR

*NYAprovia Top 1.6EC

8.5-13.3 fl oz

OR

†Topguard EQ 4.29SC

5-6 fl oz

OR

Flint 50WG

1.5-2.0 oz

CAUTION: Do not use Flint on Concord grapes (causes injury).

OR

Flint Extra

3.5-3.8 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Abound 2SC

11-15 fl oz

Note that Abound, AZAKA, QUADRIS TOP, TOPGUARD EQ, and *NYdexter max ARE extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

Pristine 38WG

10-12.5 oz

CAUTION: Do not use Pristine, on Concord or Noiret grapes (causeS injury).

OR

*NY†Luna Experience

6.0-8.6 fl oz

The 6.0-fl oz rate of *NY†Luna Experience is adequate for powdery mildew and for Botrytis during the bloom and post-bloom period, but 8.6 fl oz/A is likely to be necessary for reliable black rot control unless another product active against this dieases (e.g., mancozeb or ziram) is being used as well. It is recommended that the total number of applications of Group 7 materials (*NY†Luna Experience, Pristine, Endura [no black rot activity], and *NYAprovia [only moderate black rot activity]) be limited to no more than two per season.

OR

*NY†Luna Sensation

5.0-7.6 fl oz

*NY†Luna Sensation is another new product (first available in 2018) with the same fluopyram active ingredient, but combined with trifloxystrobin, a traditional strobilurin (Group 11) fungicide, very effective against black rot. It should provide good to excellent control of this disease at the 5.0-7.6 fl oz label rates. Do not apply this product to Concord grapes or injury may occur.

OR

^Miravis Prime

9.2-13.4 fl oz

^Miravis Prime has provided excellent control of black rot in PA trials at the 11.4 and 13.4 fl oz rates.

Powdery mildew

From this point on, powdery mildew management programs will be highly variable depending on the variety and year. Pay attention to the success of the control program to date (does spread from well-established infections need to be fought?), temperature, and sunshine intensity. Concord fruit become resistant to infection about this time and no longer require protection; however, new leaves remain susceptible until shoot growth stops, and rachises remain susceptible until late summer. Research has shown that from this stage on, protecting Concord leaves against powdery mildew provides little benefit in most years on lightly to moderately cropped vines, whereas it can be beneficial on heavily cropped vines. Mid-summer leaf protection may be particularly important in even moderately cropped Concord vineyards during cloudy, poor-ripening years, which both favor powdery mildew development and limit sugar production and accumulation in berries. Berries of V. vinifera and certain hybrid varieties retain some susceptibility until shortly after bunch closing, and research has shown that infections that occur on these varieties near bunch closure may lead to significant Botrytis bunch rot at harvest. Foliage of V. vinifera and highly susceptible hybrid varieties will require protection through veraison or beyond. Where powdery mildew management is needed, sprays must be applied even during extended dry periods when other diseases are not a threat, although spray intervals can often be extended when conditions are predominantly hot and dry. Good control of leaf infections through Labor Day will significantly reduce overwintering inoculum levels. Fixed coppers will not control powdery mildew on highly susceptible varieties but are adequate on Concord and other moderately susceptible varieties that are not copper sensitive.

Liquid Sulfur 6L

see label, rates vary

OR

Wettable Sulfur (several formulations)

see label, rates vary

OR

Nutrol

4- 8 lb

Refer to the discussion above in the "Immediate Prebloom" and "1st Postbloom" sections concerning the activities of the potassium salt fungicides (Nutrol, Kaligreen, ^Armicarb, Milstop) for control of powdery mildew.

OR

Kaligreen 82 SP

2.5-5.0 lb

OR

^Armicarb 85WG

2.5-5.0 lb

OR

Milstop 85WG

2.5-5.0 lb

OR

Rally 40WSP

4-5 oz

Tank mixes of fixed copper and Rally should be sprayed out as soon as possible; periods of several hours or more in a solution with copper can reduce the effectiveness of these products.

OR

Mettle 1ME

5 fl oz

Refer to the discussion above in the "Immediate Prebloom" and "1st Postbloom" sections about powdery mildew resistance concerns and management considerations for these Group 3 fungicides (Rally, Mettle, Revus Top/Inspire Super/*NYAprovia Top, †Rhyme, *NYProcure, *NYViticure, *NYTrionic) and the Group 3/azoxystrobin mixes (Quadris Top, †Topguard EQ).

CAUTION: DO NOT USE REVUS TOP, INSPIRE SUPER, OR *NYAPROVIA TOP ON CONCORD GRAPES (CAUSES INJURY).

OR

†Rhyme 2.08SC

5 fl oz

OR

Revus Top 4SC

7 fl oz

or Inspire Super

16-20 fl oz

OR

JMS Stylet Oil

1-2% conc. see label

OR

Purespray Green

1-2% conc.

OR

*NYViticure 4SC

6-8 fl oz

OR

*NYProcure 480SC

6-8 fl oz

OR

*NYTrionic

6-8 fl oz

OR

fixed copper (several formulations)

2 lb

Fixed copper plus lime should not be mixed with Sevin or *NYImidan.

+ hydrated lime

4 lb

OR

Champ Formula 2

1.33 pt

+ hydrated lime

0.5 lb/100 gal, see label

OR

Flint 50WG

1.5-2.0 oz

CAUTION: Powdery mildew resistance to the strobilurin fungicides is common. Please refer to the discussion concerning powdery mildew resistance to these fungicides that is provided in the "Immediate Prebloom" section.

 

CAUTION: Do not use Flint on Concord grapes (causes injury).

OR

Flint Extra

3.0-3.5 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Abound 2SC

11-15 fl oz

Note that Abound, AZAKA, Quadris Top, TOPGUARD EQ, and *NYDexter max are extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

 

CAUTION: Do not use Quadris Top on Concord grapes (causes injury).

OR

Azaka 2SC

11-15 fl oz

OR

*NYDexter Max

3.2-4.25 lb

OR

Quadris Top 2.7SC

12-14 fl oz

OR

†Topguard EQ 4.3SC

5-6 fl oz

OR

Pristine 38WG

8-12.5 oz

CAUTION: Do not use Pristine on Concord grapes or Noiret grapes (causes injury).

OR

Endura 70WG

4.5 oz

OR

Quintec 2SC

4 fl oz

OR

Vivando 2.5SC

10.3-15.4 fl oz

Vivando and Prolivo are similar products with an active ingredient in the same chemical class and should provide similar (good to excellent) levels of powdery mildew control.

OR

Prolivo 300SC

4-5 fl oz

OR

*NY†Luna Experience

6.0-8.6 fl oz

See earlier entries for comments regarding *NY†Luna Experience, *NY†Luna Sensation, *NYAprovia, *NYAprovia Top, Torino, the Double Nickel products, Oso, and Ph-D.

DO NOT USE *NYAPROVIA TOP OR LUNA SENSATION ON CONCORD GRAPES (CAUSES INJURY).

OR

*NY†Luna Sensation

4.0-7.6 fl oz

OR

*NYAprovia 0.83EC

8.6-10.5 fl oz

OR

*NYAprovia Top 1.6EC

8.5-13.3 fl oz

OR

^Miravis Prime

9.2-13.4 fl oz

^Miravis Prime is a combination of a new succinate dehydrogenase inhibitor fungicide (SDHI, Group 7) and fludioxonil (Group 12). In NY and PA trials, ^Miravis Prime has provided high levels of powdery mildew control.

OR

Torino 120 SC

3.4 fl oz

OR

Double Nickel LC

2 qt

or Double Nickel 55

1 lb

OR

Oso 5SC

6.5 fl oz

or Ph-D 89WDG

6.2 oz

OR

Regalia

1-4 qts (see label)

Regalia is a biopesticide that has provided fair to very good control of powdery mildew in NY trials, depending on disease pressure. It is likely to work best on less susceptible varieties or at times of year when pressure is low. Different rates are recommended depending on whether it is used alone or in a tank mix. Because Regalia requires 48 hours to activate plant defenses, applications need to start before infection. This product could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. Regalia should not be relied on for powdery mildew control during immediate prebloom and post bloom applications.

OR

Fracture

20.5-24.4 fl oz

Fracture is a biopesticide that has provided fair to good control of powdery mildew in NY and PA trials. It could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. It should not be relied on for conventional powdery mildew control during this critical window. No more than 5 applications can be made during the season, and Fracture may be applied no more than twice before alternating with a product that has a different mode of action.

Downy mildew

Fruit of highly susceptible varieties are still subject to infection at this time. This is also a critical time to prevent epidemic buildup of downy mildew on the foliage of susceptible varieties. Refer to the discussion of downy mildew biology under the "pest information" section for additional guidance.

*NYDithane DF

4 lb

Mancozeb products may not be used within 66 days of harvest.

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

Label rates for *NYDexter Max are 1.6 to 4.25 lbs/A. The 3.2 and 4.25 lb/A rates of this product contain the same amount of azoxystrobin as 10 and about 13.1 fl oz of Abound flowable (the low and mid-range of Abound rates for grapes, respectively), and the same amount of mancozeb as 3 and 4 lbs of the 75DF formulations of Dithane, Manzate, Penncozeb, and other mancozeb products.

OR

Captan 50 WP

4 lb

OR

Captan 80 WDG

2.5 lb

OR

Captec 4L

2 qt

OR

Ridomil Gold/ Copper

2 lb

Ridomil Gold is the most effective material to use against downy mildew but is highly prone to resistance development. See previous discussions regarding the rates of mancozeb and copper in the MZ and Copper formulations. To reduce the risk of developing resistance, use no more than one to two total applications of Ridomil per season (MZ and Copper formulations combined), do not apply two applications in a row, and do not attempt "rescue" treatments with this material if an epidemic is in progress. Ridomil Gold MZ may not be used within 66 days of harvest, whereas Ridomil Gold Copper may be used to within 42 days of harvest.

OR

Ridomil Gold MZ WG

2.5 lb

OR

fixed copper (several formulations)

2 lb

CAUTION: Tank mixes of fixed copper and Rally should be sprayed out as soon as possible; periods of several hours or more in a solution with copper can reduce the effectiveness of Rally. Fixed copper plus lime should not be mixed with Sevin or *NYImidan.

+ hydrated lime

4 lb

OR

Champ Formula 2

1.33-2.66 pt

+ hydrated lime

0.5 lb/100 gal, see label

OR

Abound 2SC

Azaka 2SC

Quadris Top 2.7SC

Pristine 38WG

Sovran 50WG

*NY†Reason 500SC

†Topguard EQ 4.3SC

Not recommended for use alone

CAUTION: Refer to the discussion above in the "Immediate Prebloom" and "1st Postbloom" sections about downy mildew resistance concerns and management considerations for the Group 11 (strobilurin) fungicides. CAUTION: DO NOT USE PRISTINE, QUADRIS TOP, OR REVUS TOP ON CONCORD GRAPES NOR PRISTINE ON NOIRET GRAPES (CAUSE INJURY). CHECK INDIVIDUAL LABELS FOR OTHER CULTIVARS THAT MIGHT ALSO BE AFFECTED. Note that Quadris Top AZAKA, Abound, topguard eq, and *NYdexter max are extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

ProPhyt

2-4 pt

Refer to the discussion above in the "Immediate Prebloom" and "1st Postbloom" sections about use of the phosphorous acid fungicides (e.g., ProPhyt, Phostrol, Rampart). IT IS IMPORTANT THAT USE OF THESE PRODUCTS BE LIMITED TO A MAXIMUM OF THREE APPLICATIONS PER YEAR, WITH NO MORE THAN TWO SEQUENTIAL APPLICATIONS, IN ORDER TO DELAY RESISTANCE DEVELOPMENT. For additional information, refer to the discussion on "phosphorous acid" in the "Fungicides" section.

OR

Phostrol

2.5-5 pt

OR

Rampart

2-6 pt

OR

*NYPresidio 2SC

3-4 fl oz

NOTE: Valent has pulled the grape use from the *NYPresidio label and any new product will not be legal for use on grapes. However, grape growers will be able to legally use up old stock of *NYPresidio with the grape use pattern on the label.

*NYPresidio and Revus are both relatively new, but unrelated, fungicides that control only downy mildew. Revus Top is a combination product that contains the active ingredient from Revus plus a second fungicide (difenoconazole, a DMI or Group 3 material) that controls powdery mildew, black rot, and anthracnose. Both *NYPresidio and the Revus products have proven to be very effective under high disease pressure. All are absorbed by plant tissues, so are not subject to wash-off once this has occurred, and provide both protective and limited post-infection activities (*NYPresidio is likely to provide somewhat better post-infection activity; the post-infection activity of the Revus products is likely to be maximized by applying them with a penetrating surfactant). *NYPresidio is recommended for use at 12- to 14-day intervals with a 21-day PHI, and the label requires that it be tank-mixed with another downy mildew fungicide for resistance management. Revus is labeled for use at 7-day intervals but has given very good control on V. vinifera cultivars when applied at 14-day intervals in several NY trials; it has a 14-day PHI. Revus Top is labeled for use at 14-day intervals, and also has a 14-day PHI. CAUTION: DO NOT USE REVUS TOP ON CONCORD GRAPES (CAUSES INJURY).

OR

Revus 2SC

8 fl oz

or Revus Top 4SC

7 fl oz

OR

*NYGavel 75DF

2.0-2.5 lb

*NYGavel is a relatively new fungicide labeled for control of downy mildew and other diseases. It is a combination of two active ingredients: (i) zoxamide, a downy mildew- specific fungicide related to *NYPresidio; and (ii) mancozeb. When applied at the labeled rate of 2.0-2.5 lb/A, it provides the same amount of mancozeb as 1.8-2.2 lb of standard 75DF formulations of other mancozeb products such as Dithane, Penncozeb, etc. Thus, for control of labeled diseases other than downy mildew, *NYGavel should be tank-mixed with sufficient quantities of another mancozeb product to provide a mancozeb dosage equivalent to the labeled rates of 3-4 lb/A of the 75DF formulations of such products. In a limited number of trials, *NYGavel has provided fair to good control of downy mildew when applied at 14-day intervals.

OR

Ranman 400SC

2.1-2.75 fl oz

Ranman is a new fungicide unrelated to any other registered product. It is active only against downy mildew, primarily as a protectant but with limited post-infection activity. It has provided good to excellent control in NY trials, and has been most effective when tank-mixed with a phosphonate product to provide additional post-infection activity.

OR

*NY†Zampro 4.4SC

11-14 fl oz

*NY†Zampro is a new fungicide active against only downy mildew. *NY†Zampro contains two downy mildew-specific active ingredients: (i) ametoctradin, representing a new class of chemistry, with no other representatives currently registered; and (ii) dimethomorph, a Group 40 fungicide similar to Revus. It is assumed to have good protective activity; some limited post-infection activity; and anti-sporulant activity. It is labeled for use at 7-10 day intervals but has provided very good to excellent control on V. vinifera cultivars when used at 14-day intervals in several NY trials, even under heavy pressure. The label allows a maximum of four applications per season, but we recommend no more than three applications of *NY†Zampro and Revus (or Revus Top) combined, and no more than two sequential applications of these products before rotating to a product that does not contain a Group 40 material.

Phomopsis cane and leaf spot (rachis and fruit infections)

Although grape berries and rachises remain susceptible to infection by the Phomopsis fungus until later, research indicates that the seasonal supply of Phomopsis spores is virtually exhausted by early summer, unless the weather has been very dry for several weeks beforehand. Thus, continued protection from this point forward is not necessary in most vineyards or most years, although it might be under unusual circumstances on highly susceptible varieties in very wet years.

*NYDithane DF

4 lb

CAUTION: Do not apply mancozeb products within 66 days of harvest.

or Dithane M45

or Manzate Pro-Stick 75DF

or *NYDexter Max

3.2-4.25 lb

See earlier comments about rates of *NYDexter Max

or Penncozeb 75DF

OR

*NYDithane F-45

3.2 qt

or *NYManzate Max 4F

OR

Captan 50WP

2-4 lb

or Captan 80WDG

1.25-2.5 lb

OR

Captec 4L

1.5-2.0 qt

OR

Ziram 76DF

4 lb

OR

Abound 2 SC

11-12 fl oz

OR

Azaka 2SC

11-12 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Pristine 38WG

8-12.5 oz

34394

5.2.11 MIDSUMMER SPRAYS (July and August, as necessary)

Black rot

For some time, it was thought that berries remain highly susceptible to black rot until they reach approximately 8° Brix. However, research has shown that even under high disease pressure, berries become highly resistant to infection by about 5 (Concord) to 7 (V. vinifera) weeks after the start of bloom. Experience has shown that it is usually possible to end black rot spray programs after the second postbloom application IF the disease has been well managed until then. However, protection may continue to be necessary until late July if more than a trace level of fruit rot is present, to limit spread within the clusters.

Rally 40WSP

4-5 oz

OR

Mettle 1 ME

5 fl oz

OR

†Rhyme 2.08SC

5 fl oz

OR

Revus Top 4SC

7 fl oz

CAUTION: Do not use Revus Top, Inspire Super, or *NYaprovia top on Concord grapes (cause injury).

or Inspire Super

16-20 fl oz

or *NYAprovia Top 1.6EC

8.5-13.3 fl oz

OR

*NYDithane DF

4 lb

CAUTION: Do not apply mancozeb products within 66 days of harvest.

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75 DF

OR

*NYDithane F-45

3.2 qt

or *NYManzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

OR

Ziram 76DF

4 lb

OR

Abound 2SC

11-15 fl oz

CAUTION: Do not use Quadris Top on Concord grapes (causes injury). Note that Quadris Top, AZAKA, Abound, topguard eq, and *NYdexter max are extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

Azaka 2SC

11-15 fl oz

OR

Quadris Top 2.7SC

12-14 fl oz

OR

†Topguard EQ 4.3SC

5-6 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Flint 50WG

1.5-2.0 oz

CAUTION: Do not use Flint on Concord grapes (causes injury).

OR

Flint Extra

3.5-3.8 fl oz

OR

Pristine 38WG

8-12.5 oz

CAUTION: Do not use Pristine on Concord or Noriet grapes (causes injury).

OR

*NY†Luna Experience

8.6 fl oz

Although a lower rate of *NY†Luna Experience is registered for control of powdery mildew, the 8.6 fl oz/A rate is necessary for reliable black rot control. This higher rate will also provide improved control of Botrytis.

OR

*NY†Luna Sensation

5.0-7.6 fl oz

See earlier comments regarding *NY†Luna Sensation.

OR

^Miravis Prime

9.2-13.4 fl oz

^Miravis Prime is a combination of a new succinate dehydrogenase inhibitor fungicide (SDHI, Group 7) and fludioxonil (Group 12). In NY and PA trials, ^Miravis Prime has provided high levels of black rot control in PA trials at the 11.4 and 13.4 fl oz rates.

Powdery mildew

Berries of highly susceptible V. vinifera varieties become moderately to highly resistant by 3-4 weeks after the start of bloom and quickly become highly resistant to immune as they age beyond that point. However, older leaves retain some susceptibility and new leaves remain highly susceptible so long as they continue to be produced. It also appears that berry stems may retain some susceptibility later in the season, although this is likely to be significant only as a cosmetic issue on table grapes. Thus, the strategy for powdery mildew management should be to provide aggressive control earlier in the season and then maintain an appropriate level of control on clean berries and new foliage during the midsummer using a less conservative approach (see "pest information" section for a discussion of this factor on different varieties). This objective often can be accomplished with sulfur later in the season on those varieties most in need of protection (vinifera and some hybrids). On Concord and some other sulfur-sensitive varieities with only moderate susceptibility to powdery mildew and tolerant of copper, copper fungicides will provide adequate control of mid-season foliar infections if needed, while also providing control of downy mildew. Many other materials that provide good control of foliar disease but are less active against fruit infections can be used effectively at this time also. Thus, this is an excellent time to use non-premium rotational materials. Most newer conventional fungicides provide a longer period of protection than sulfur, potassium salts, oils, and biological, so can be applied less frequently.

Liquid Sulfur 6L

see label, rates vary

In addition to being relatively economical, use of sulfur in midsummer reduces the pressure for developing resistance to other powdery mildew fungicides. Concerns about potential sulfur residues reducing wine quality are much lower for white cultivars than for red cultivars.

OR

Wettable Sulfur (several formulations)

see label, rates vary

OR

fixed copper (several formulations)

2 lb

Fixed copper formulations and lime should not be used with Sevin or *NYImidan.

+ hydrated lime

4 lb

OR

Champ Formula 2

1.33 pt

+ hydrated lime

0.5 lb/100 gal, see label

OR

JMS Stylet Oil

1-2.0% conc., see label

Multiple applications of oil products near or after veraison may cause a reduction in Brix values at harvest.

OR

Purespray Green

1-2% conc.

OR

Nutrol

4-8 lb

OR

Kaligreen 82 SO

2.5-5 lb

OR

^Armicarb 85WG

2.5-5 lb

OR

Milstop 85WG

2.5-5 lb

OR

Revus Top 4SC

7 fl oz

CAUTION: Do not use Revus Top or Inspire Super on Concord grapes (cause injury).

or Inspire Super

16-20 fl oz

OR

Rally 40WSP

4-5 oz

CAUTION: Limit use of the DMI (Group 3) fungicides (generic tebuconazole products, Mettle, Rally, Revus Top/Inspire Super/*NYAprovia Top, *NYProcure, †Rhyme, † Topguard EQ,*NYViticure, *NYTrionic) to a maximum of three applications per season of all such materials combined. Refer to previous discussions regarding the occurrence and management of powdery mildew resistance to these materials.

CAUTION: Refer to previous discussions regarding the occurrence and management of powdery mildew resistance to the strobilurin (Group 11) fungicides.

CAUTION: DO NOT USE FLINT OR QUADRIS TOP ON CONCORD GRAPES (CAUSES INJURY). Note that Quadris Top, AZAKA, Abound, TOPGUARD EQ, and *NYdexter max are extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

*NYViticure 4SC

6-8 fl oz

OR

*NYProcure 480SC

6-8 fl oz

OR

*NYTrionic 4SC

6-8 fl oz

OR

Mettle 1ME

5 fl oz

OR

†Rhyme 2.08SC

5 fl oz

OR

Flint 50WG

1.5-2.0 oz

OR

Flint Extra

3.0-3.5 fl oz

OR

Sovran 50WG

3.2-4.0 oz

OR

Abound 2SC

11-15 fl oz

OR

Azaka 2SC

11-15 fl oz

OR

Quadris Top 2.7 SC

12-14 fl oz

OR

†Topguard EQ

5-6 fl oz

OR

Pristine 38WG

10-12.5 oz

CAUTION: DO NOT USE PRISTINE ON CONCORD OR NOIRET GRAPES (CAUSES INJURY).

OR

Endura 70WG

4.5 oz

OR

*NY†Luna Experience

6.0-8.6 fl oz

See earlier comments regarding *NYAprovia, *NYAprovia Top, *NY†Luna Experience, *NY†Luna Sensation, Torino, the Double Nickel products, Oso, and Ph-D.

 

CAUTION: DO NOT USE *NYAPROVIA TOP ON CONCORD GRAPES (CAUSES INJURY).

OR

*NY†Luna Sensation

4.0-7.6 fl oz

OR

*NYAprovia 0.83EC

8.6-10.5 fl oz

OR

*NYAprovia Top 1.6EC

8.5-13.3 fl oz

OR

^Miravis Prime

9.2-13.4 fl oz

^Miravis Prime is a combination of a new succinate dehydrogenase inhibitor fungicide (SDHI, Group 7) and fludioxonil (Group 12). In NY and PA trials, ^Miravis Prime has provided high levels of powdery mildew control.

OR

Torino 120SC

3.4 fl oz

OR

Quintec 2SC

4 fl oz

OR

Vivando 2.5SC

10.3-15.4 fl oz

Vivando and Prolivo are similar products with an active ingredient in the same chemical class and should provide similar (good to excellent) levels of powdery mildew control.

OR

Prolivo 300SC

4-5 fl oz

OR

Double Nickel LC

2 qt

or Double Nickel 55

1 lb

OR

Oso 5SC

6.5 fl oz

or Ph-D 89WD

6.2 oz

OR

Regalia

1-4 qts (see label)

Regalia is a biopesticide that has provided fair to very good control of powdery mildew in NY trials, depending on disease pressure. It is likely to work best on less susceptible varieties or at times of year when pressure is low. Different rates are recommended depending on whether it is used alone or in a tank mix. Because Regalia requires 48 hours to activate plant defenses, applications need to start before infection. This product could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. Regalia should not be relied on for powdery mildew control during immediate prebloom and post bloom applications.

OR

Fracture

20.5-24.4 fl oz

Fracture is a biopesticide that has provided fair to good control of powdery mildew in NY and PA trials. It could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. It should not be relied on for conventional powdery mildew control during this critical window. No more than 5 applications can be made during the season, and Fracture may be applied no more than twice before alternating with a product that has a different mode of action.

Downy mildew

Downy mildew often "disappears" for a while if midsummer weather becomes hot and dry, but it has the potential for "explosive" spread under favorable conditions (moderately warm temperatures and wet). Vineyards should be scouted for the presence of this disease throughout the summer, and the foliage should be protected appropriately to prevent premature leaf drop, as determined by weather conditions, cultivar susceptibility, and disease presence.

Captan 50WP

4 lb

or Captan 80 WDG

2.5 lb

or Captec 4L

2 qt

OR

*NYDithane DF

4 lb

MANCOZEB PRODUCTS CANNOT BE USED WITHIN 66 DAYS OF HARVEST.

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

3.2 qt.

or *NY Manzate Max 4F

OR

*NYDexter Max

3.2-4.25 lb

OR

fixed copper formulations

label rate

CAUTIONS: (1) Fixed copper formulations and lime should not be used with Rally, Sevin, or *NYImidan. (2) Copper applied under humid, slow-drying conditions may cause injury.

+ hydrated lime

4 lb

OR

Ridomil Gold MZ WG

2.5 lb

CAUTION: Refer to previous discussions about downy mildew resistance concerns and management considerations for the Ridomil products. Ridomil Gold MZ WG cannot be used within 66 days of harvest.

OR

Ridomil Gold/ Copper

2 lb

Ridomil Gold/Copper formulation may be used to within 42 days of harvest.

OR

Abound 2SC

Azaka 2SC

Quadris Top 2.7SC

†Topguard EQ

not recommended for use alone

CAUTION: Refer to the discussion above in the "Immediate Prebloom" and "1st Postbloom" sections about the prevalence of downy mildew resistance and management considerations for use of the Group 11 (strobilurin) fungicides.

CAUTION: DO NOT USE QUADRIS TOP OR REVUS TOP ON CONCORD GRAPES (CAUSE INJURY). CHECK INDIVIDUAL LABELS FOR OTHER CULTIVARS THAT MIGHT ALSO BE AFFECTED. Note that Quadris Top, AZAKA, Abound, TOPGUARD EQ, and *NYDexter max are extremely phytotoxic to certain apple varieties due to the active ingredient azoxystrobin. See the ABOUND entry in Section 3.2 for information concerning use of these fungicides in Pennsylvania.

OR

Pristine 38WG

CAUTION: Do not use Pristine on Concord or Noiret grapes (causeS injury).

OR

Sovran 50WG

OR

*NY†Reason 500SC

2.7 fl oz

OR

ProPhyt

2-4 pt

Refer to the discussion above in the "Immediate Prebloom" and "1st Postbloom" sections about use of the phosphorous acid fungicides (e.g., ProPhyt, Phostrol, Rampart). IT IS IMPORTANT THAT USE OF THESE PRODUCTS BE LIMITED TO A MAXIMUM OF THREE APPLICATIONS PER YEAR, WITH NO MORE THAN TWO SEQUENTIAL APPLICATIONS, IN ORDER TO DELAY RESISTANCE DEVELOPMENT. Refer to the discussion on "phosphorous acid" in the "Fungicides" section for further information.

OR

Phostrol

2.5-5 pt

OR

Rampart

2-6 pt

OR

*NYPresidio 2SC

3-4 fl oz

NOTE: Valent has pulled the grape use from the *NYPresidio label and any new product will not be legal for use on grapes. However, grape growers will be able to legally use up old stock of *NYPresidio with the grape use pattern on the label.

Refer to previous discussions on the properties of *NYPresidio, Revus/Revus Top, Ranman, and *NYGavel.

CAUTION: DO NOT USE REVUS TOP ON CONCORD GRAPES (CAUSES INJURY).

OR

Revus 2SC

8 fl oz

or Revus Top 4SC

7 fl oz

OR

*NYGavel 75DF

2.0-2.5 lb

OR

Ranman 400SC

2.1-2.75 fl oz

OR

*NY†Zampro 4.4SC

11-14 fl oz

*NY†Zampro is a new fungicide active against only downy mildew. *NY†Zampro contains two downy mildew-specific active ingredients: (i) ametoctradin, representing a new class of chemistry, with no other representatives currently registered; and (ii) dimethomorph, a Group 40 fungicide similar to Revus. It is assumed to have good protective activity; some limited post-infection activity; and anti-sporulant activity. It is labeled for use at 7-10 day intervals but has provided very good to excellent control on V. vinifera cultivars when used at 14-day intervals in several NY trials.

The label allows a maximum of four applications per season, but we recommend no more than three applications of *NY†Zampro and Revus (or Revus Top) combined, and no more than two sequential applications of these products before rotating to a product that does not contain a Group 40 material.

Botrytis bunch rot

Most commonly a problem on tight-clustered French hybrid and Vitis vinifera cultivars. Proper timing and thorough spray coverage are essential for good control. Removal of leaves around clusters soon after fruit set also aids significantly in control. Botrytis sprays should be directed towards the fruit, using sufficient water to ensure thorough coverage. Although weather plays a large role in determining the most important application times for Botrytis fungicides, sprays at or shortly after veraison consistently appear to be beneficial on susceptible varieties unless preharvest weather is especially dry. A subsequent application also can be beneficial on highly susceptible varieties if the preharvest weather is wet, particularly if the disease is already established; this preharvest spray should be at least 2 weeks after the veraison spray, and its precise timing should be determined by weather conditions, the presence of disease in the vineyard, the time remaining until harvest, and label restrictions. Applications at late bloom and pre-bunch closure can be as important as those at veraison and preharvest if the weather is wet during these earlier periods. Thus, growers who have had trouble controlling Botrytis when they have delayed applications until veraison (or later) should consider protecting against the disease at late bloom and/or pre-bunch closing if the weather is wet during these times. All of the most effective Botrytis fungicides are subject to resistance development; therefore, they should be used in rotation with each other to minimize this risk. Make no more than two applications per season of any one material or class of fungicide, e.g., Vangard and Scala are both in the same class (Group 9) and Inspire Super and †Switch each have a (Group 9) component; ^Miravis Prime and †Switch each have a Group 12 component; ^Intuity and Flint are both in the same class (Group 11) and Pristine has a (Group 11) component; Endura is in (Group 7) and Pristine *NY†Luna Experience, *NY†Luna Sensation, and ^Miravis Prime each have a (Group 7) component.

Rovral 4F

1.5-2.0 pt

7 day PHI. Performance of Rovral and generic iprodione products usually is improved by adding oil or a surfactant to the spray mix.

OR

Vangard 75WG

10 oz

7 day PHI

OR

Inspire Super

16-20 fl oz

A rate of 20 fl oz/A of Inspire Super provides the same amount of cyprodinil, the active ingredient in Vangard, as 7 oz/A of that product. From veraison onwards, it is likely necessary to tank mix with an additional 3 oz/A of Vangard or another Botrytis-active fungicide to obtain best control, especially under high disease pressure.

OR

Elevate 50WDG

1 lb

0 day PHI

OR

Endura 70WG

8 oz

OR

Scala 5SC

18 fl oz

7 day PHI

OR

Flint 50WG

3 oz

14 day PHI. Labeled for control of Botrytis at higher rates than used for powdery mildew control. High risk of resistance development and resulting poor performance in vineyards where Group 11 (strobilurin) fungicides have been applied for a significant length of time. Research in VA has shown Botrytis resistance among the strobilurin (Group 11) materials to be common there; thus, it is also likely to occur in many NY and PA vineyards where these products have been used more than occasionally for a number of years, although this has not been investigated specifically. Nevertheless, based on our experiences with downy and powdery mildews, it is risky to rely on Flint or Flint Extra for control of Botrytis in vineyards with a significant history of strobilurin use, unless it is tank mixed with another product with good efficacy against this disease.

OR

Flint Extra

3.5-3.8 fl oz

OR

Pristine 38WG

18.5-23 oz

Pristine is only fair against Botrytis at the rate of 8-10.5 oz/A commonly used for other diseases, but it traditionally has been good at 12.5 oz/A and very good to excellent at 18.5-23 oz/A.

OR

*NY†Luna Experience

8.0-8.6 fl oz

Although a lower rate of *NY†Luna Experience is registered for control of powdery mildew, the 8.0-8.6 fl oz/A rate will provide more reliable Botrytis control late in the season.

OR

*NY†Luna Sensation

5.0-7.6 fl oz

*NY†Luna Sensation is another new product (first available in 2018) with the same fluopyram active ingredient as *NY†Luna Experience, but combined with trifloxystrobin, a traditional strobilurin (Group 11) fungicide. Unlike Luna Experience, both active ingredients have good to excellent activity against Botrytis. The 5.0-7.6 fl oz label rate for Botrytis delivers a fluopyram dose equal to about 6.3 to 9.5 fl oz of Luna Experience (beyond the maximum rate of 8.6 fl oz for Botrytis control) and about the same amount of trifloxystrobin as 2.5-3.8 fl oz of Flint Extra and 2.5-3.8 oz of Flint. Therefore, the middle of this range (about 6.3 fl oz) would just about match the recommended minimum dose of fluopyram in Luna Experience (8.0 fl oz) and the recommended dose of trifloxystrobin (3.0 oz) found in Flint for good to excellent Botrytis control needed at this time. Do not apply this product to Concord grapes or injury may occur.

OR

^Miravis Prime

10.3-13.4 fl oz

^Miravis Prime is a combination of a new succinate dehydrogenase inhibitor fungicide (SDHI, Group 7) and fludioxonil (Group 12), introduced about 25 years ago for Botrytis control. Fludioxonil is also found in another combination product called Switch for Botrytis control. Most, if not all of the activity against Botrytis comes from fludioxonil. The 10.3-13.4 fl oz rate of ^Miravis Prime delivers the same amount of fludioxonil as the 11-14 oz labe rate range of Switch.

OR

†Switch 62.5WG

11-14 oz

OR

^Intuity 4SC

6 fl oz

^Intuity is a strobilurin fungicide for control of Botrytis and suppression of powdery mildew. In limited NY and PA trials, ^Intuity provided good to fair control of Botrytis equivalent to current standards like Elevate, Vangard, Scala, and †Switch. Do not use on V. labrusca, V. labrusca hybrids or other non-vinifera hybrids. Avoid mixing with organosilicone surfactants.

OR

Botector

6-8 oz

Botector is a preparation of a living yeast-like organism that competes with the Botrytis fungus for colonization sites on the grape flowers and berries. It provides protective activity only and can be killed by some broad-spectrum fungicides used for managing other diseases. Fracture is a fragment of a naturally-occuring plant protein that has activity against some fungi. Both products have provided fair to good control in a limited number of NY trials with moderate disease pressure.

OR

Fracture

24.4-36.6 fl oz

Grape berry moth

Treatments in mid-summer targeting offspring from second and subsequent adult flights need to be made to high-risk vineyards. Timing of sprays for offspring from second and third flights is best accomplished using the grape berry moth degree day model available at the Network for Environment and Weather Applications (NEWA): newa.cornell.edu/index.php?page=crop-page-grapes. Low-risk vineyards rarely require this treatment. Sample low- and intermediate-risk vineyards during mid and late season, as well as high-risk vineyards for late season (August), to determine if they need to be treated. . See New York Food and Life Sciences Bulletin no. 138 for GBM risk assessment protocols, or contact the grape IPM program. Most insecticides are incompatible with lime. Check label for incompatibility before tank mixing insecticides with alkaline spray materials. See New York Food and Life Sciences Bulletin no. 118 for information on effects of alkaline hydrolysis on pesticides.

Sevin 4F

2 qt

Efficacy of carbaryl products such as Sevin has dropped in recent years, especially in the Lake Erie region, probably due to resistance.

or ^Sevin 80 Solupak

2.5 lb

or Sevin XLR Plus

2 qt

OR

*NYImidan 70W

1.33-2.125 lb

OR

Dipel DF

read the label

If using Dipel DF, Deliver, or Biobit, proper timing is critical to control. Scout vineyards carefully, apply when larval feeding begins, and repeat after 5-7 days.

OR

Deliver

0.5-2 lb

OR

Biobit

0.5-1 lb

OR

*Brigade 2EC

3.2-6.4 fl oz

Maximum of 6.4 fl oz *Brigade 2 EC per season.

or *Brigade WSB

8-16 oz

or *Bifenture 10DF

8-16 oz

or *Bifenture 2EC

3.2-6.4 fl oz

or *Sniper

3.2-6.4 fl oz

OR

*Brigadier

5.1-6.4 fl oz

Maximum of 12.8 oz *Brigadier per season.

OR

*Baythroid XL

2.4-3.2 fl oz

Maximum of 12.8 fl oz *Baythroid XL per season.

OR

*Leverage 360

3.2-6.4 fl oz

Maximum of 6.4 fl oz *Leverage 360 per season.

OR

^Intrepid 2F

8-16 fl oz

DEC approval for use of ^Intrepid on grapes in NY is pending. Although it is not legal to use in NY, it is legal to use in Pennsylvania. ^Intrepid is most effective when applied at the start of egg-laying rather than at egg-hatch. Hence, ^Intrepid should be applied somewhat earlier than broad-spectrum materials such as carbaryl.

OR

*Danitol 2.4EC

10.7-21.3 fl oz

*Danitol 2.4EC is a broad-spectrum insecticide with some miticidal activity. Frequent use may disrupt biological control of spider mites.

OR

^*Mustang Max

4 fl oz

Maximum 24 fl oz ^*Mustang Max per season.

OR

*Hero

4-10.3 fl oz

Maximum 10.3 fl oz *Hero per season.

OR

^*Triple Crown

5 fl oz

Maximum of 10.2 fl oz/A per season.

OR

Avaunt

5.0-6.0 oz

Avaunt is most effective when applied at start of egg-laying. Label recommends use of an adjuvant. Avaunt also provides some suppression of leafhoppers. Label only allows 2 applications per season and a total maximum of 12 oz per acre.

OR

Delegate WG

3-5 oz

Maximum of 19.5 oz/A/year.

OR

Entrust SC

4-8 fl oz

No more than two consecutive applications. Max of 29 fl oz per season.

OR

*NYAltacor

2-4.5 oz

Maximum of 9 oz per season.

OR

*NYVoliam Flexi

4.5 oz

Maximum of 9 oz *NY†Voliam Flexi per acre per season.

OR

*NY†Belt

3-4 fl oz

Maximum of 12 fl oz per acre per season.

OR

*NY†Tourismo

10-14 fl oz

Maximum of 37 fl oz/A per season.

OR

Knack

16 fl oz

Not to exceed 32 fl oz/A per season.

Grape leafhopper

When moderate leaf injury is visible in vineyards. See New York's Food and Life Sciences Bulletin no. 138 for information on treatment guidelines. Finger Lakes growers of Concord and other native grape cultivars should monitor leafhopper populations carefully, as resistance is suspected in isolated vineyards of the region. If carbaryl fails to control leafhoppers, do not repeat application of the material. Application of other materials with different modes of action is recommended.

Sevin 4F

1-2 qt

or ^Sevin 80 Solupak

1.25-2.5 lb

or Sevin XLR Plus

1-2 qt

OR

*Brigade 2EC

3.2-6.4 fl oz

Labeled for eastern and western grape leafhopper. Maximum of 6.4 fl oz *Brigade 2 EC per season.

or *Brigade WSB

8-16 oz

or *Bifenture 10DF

8-16 oz

or *Bifenture 2EC

3.2-6.4 fl oz

or *Sniper

3.2-6.4 fl oz

OR

*Brigadier

3.8-6.4 fl oz

Labeled for eastern and western grape leafhopper. Maximum of 12.8 oz *Brigadier per season.

OR

*Baythroid XL

2.4-3.2 fl oz

Maximum of 12.8 fl oz *Baythroid XL per season.

OR

^*Mustang Max

4 fl oz

Maximum 24 fl oz ^*Mustang Max per season. Eastern grape leafhopper only.

OR

*Hero

4-10.3 fl oz

Maximum 10.3 fl oz *Hero per season. Eastern grape leafhopper only.

OR

*Leverage 360

2.4-3.2 fl oz

Maximum of 6.4 fl oz *Leverage 360 per season.

OR

^Provado 75% WSP

0.75-1.0 oz

In insecticide trials conducted over the last several years, *NYProvado effectively managed leafhopper populations. Maximum of 0.1 lb imidacloprid (ai) per season. Take into account that more than one product that contains imidacloprid. ^Provado 75% WSP. *NYProvado 1.6F, *NYPasada 1.6F, *NYPasada 75W, *NYAdmire Pro, ^Admire 2F, and *NYAlias 4F all contain imidacloprid as does *Leverage 360.

or *NYProvado 1.6

3-4 fl oz

OR

*NYPasada 1.6F

3.5 fl oz

Maximum of 8 fl oz of *NYPasada 1.6F per season.

OR

^Pasada 75W

0.8-1.0 oz

Maximum of 2.0 oz of ^Pasada 75W per season.

OR

*NYAdmire Pro

7-14 fl oz (soil); 1-1.4 fl oz (foliar)

Maximum 2.8 fl oz/A foliar per season, Maximum of 14 fl oz of *NYAdmire Pro soil applied per season.

OR

^Admire 2F

16-32 fl oz

Maximum of 32 fl oz of ^Admire 2F per season.

OR

*NYAlias 4F

8-16 fl oz (soil); 1.2-1.6 (foliar)

Maximum of 16 fl oz of *NYAlias 4F per season when applied as soil treatment and maximum of 3.2 fl oz as foliar.

OR

*NY†Actara

1.5-3.5 oz

Maximum of 7.0 oz/A per season of *NY†Actara allowed. Minimum spray interval is 14 days. Not for use in Nassau and Suffolk counties in NY.

OR

*NY†Platinum

8-17 fl oz

Maximum of 17 fl oz *NY†Platinum per season. Systemic insecticide applied to the soil. Most effective when applied via drip irrigation.

OR

*Danitol 2.4EC

5.3-10.6 fl oz

*Danitol 2.4EC is a broad-spectrum insecticide with some miticidal activity. Frequent use may disrupt biological control of spider mites.

OR

^*Triple Crown

5 fl oz

Maximum of 10.2 fl oz/A per season.

OR

Assail 30SG

2.5 oz

OR

*NY†Applaud 70DF

9-12 oz

Maximum of 24 oz *NY†Applaud per season. Allow at least 14 days between applications and maximum of 2 applications per season. Not for use in Nassau and Suffolk counties in NY.

OR

*NYVoliam Flexi

4.5 oz

Maximum of 9 oz *NY†Voliam Flexi per acre per season.

OR

*NY†Sivanto Prime

7-14 fl oz

Not to exceed 28 fl oz/A per season. Minimum interval between applications is 10 days.

Potato leafhopper

M-Pede

read the label

If using M-Pede, apply early in the day or when humidity is high and temperatures are moderate. Consult label for information on using M-Pede with high mineral-content water and other materials. M-Pede may cause phytotoxicity under certain environmental conditions.

OR

^Provado 75% WSP

0.75-1.0 oz

Maximum of 0.1 lb imidacloprid (ai) per season. Take into account that more than one product that contains imidacloprid. ^Provado 75% WSP. *NYProvado 1.6F, *NYPasada 1.6F, *NYPasada 75W, *NYAdmire Pro, ^Admire 2F, and *NYAlias 4F all contain imidacloprid as does *Leverage 360.

or *NYProvado 1.6

3-4 fl oz

OR

*NYPasada 1.6F

3.5 fl oz

Maximum of 8 fl oz of *NYPasada 1.6F per season.

OR

^Pasada 75W

0.8-1.0 oz

Maximum of 2.0 oz of ^Pasada 75W per season.

OR

*NYAdmire Pro

7-14 fl oz (soil); 1-1.4 fl oz (foliar)

Maximum 2.8 fl oz/A foliar per season, Maximum of 14 fl oz of *NYAdmire Pro soil applied per season.

OR

^Admire 2F

16-32 fl oz

Maximum of 32 fl oz of ^Admire 2F per season.

OR

*NYAlias 4F

8-16 fl oz (soil), 1.2-1.6 (foliar)

Maximum of 16 fl oz of *NYAlias 4F per season when applied as soil treatment and maximum of 3.2 fl oz as foliar.

OR

*NY†Actara

1.5-3.5 oz

Maximum of 7.0 oz/A per season of *NY†Actara allowed. Minimum spray interval is 14 days. Not for use in Nassau and Suffolk counties in NY.

OR

*NY†Platinum

8-17 fl oz

Maximum of 17 fl oz *NY†Platinum per season. Systemic insecticide applied to the soil. Most effective when applied via drip irrigation.

OR

^Sevin 80 Solupak

1.25-2.5 lb

OR

Sevin 4F

1-2 qt

OR

Sevin XLR Plus

1-2 qt

OR

Assail 30SG

2.5 oz

OR

*NY†Applaud 70DF

9-12 oz

Maximum of 24 oz *NY†Applaud per season. Allow at least 14 days between applications and maximum of 2 applications per season. Not for use in Nassau and Suffolk counties in NY.

OR

*Leverage 360

2.4-3.2 fl oz

Maximum of 6.4 fl oz *Leverage 360 per season.

OR

*NYVoliam Flexi

4.5 oz

Maximum 9 oz *NY†Voliam Flexi per acre per season.

OR

*NY†Sivanto Prime

7-14 fl oz

Not to exceed 28 fl oz/A per season. Minimum interval between applications is 10 days.

Japanese beetle

Vines can tolerate significant feeding without economic damage. Wine grapes are more susceptible than native grapes like Concord. Some severe problems have been observed on young vines on Long Island. Also pay particular attention to young vines in grow tubes.

Sevin 4F

1-2 qt

After beetles appear in early to mid-July.

or ^Sevin 80 Solupak

2.5 lb

or Sevin XLR Plus

1-2 qt

OR

*NYImidan 70W

1.33-2.125 lb

OR

*Danitol 2.4EC

10.3-21.7 fl. oz

OR

^*Mustang Max

4 fl oz

Maximum 24 fl oz ^*Mustang Max per season.

OR

*Brigade 2 EC

3.2-6.4 fl oz

Maximum amount per season of *Brigade is 6.4 fl oz.

or *Brigade WSB

8-16 oz

or *Bifenture 10DF

8-16 oz

or *Bifenture 2EC

3.2-6.4 fl oz

or *Sniper

3.2-6.4 fl oz

OR

Assail 30SG

2.5 oz

OR

*NY†Actara

1.5-3.5 oz

Maximum of 7.0 oz/A per season of *NY†Actara allowed. Minimum spray interval is 14 days. Not for use in Nassau and Suffolk counties in NY.

OR

*NY†Platinum

8-17 fl oz

Maximum of 17 fl oz *NY†Platinum per season. Systemic insecticide applied to the soil. Most effective when applied via drip irrigation.

OR

*Brigadier

3.8-6.4 fl oz

Maximum of 12.8 oz *Brigadier per season.

OR

*Hero

4-10.3 fl oz

Maximum 10.3 fl oz *Hero per season.

OR

*Leverage 360

3.2-6.4 fl oz

2(ee) recommendation in NYS. Maximum of 6.4 fl oz *Leverage 360 per season.

OR

^Clutch 50 WDG

3 oz

OR

*NY†Altacor

3-4.5 oz

Maximum of 9 oz per season. Use high rate for large populations.

OR

Avaunt

3.5-6.0 oz

OR

*NYVoliam Flexi

4.5 oz

Maximum of 9 oz *NY†Voliam Flexi per acre per season.

Red-banded leafroller

Dipel DF

read the label

*NYImidan 70W

1.33-2.125 lb

About July 25, and 2 weeks later.

OR

*NY†Belt

3-4 fl oz

Maximum of 12 fl oz per acre per season.

OR

Delegate WG

3-5 oz

Maximum of 19.5 oz/A/year.

OR

*Danitol 2.4EC

10.6-21.3 fl oz

European red mite and two-spotted spider mite

First postbloom spray; repeat 21 days later if necessary. Rare except on Long Island, NY, where hot, dry conditions may result in rapidly growing spider mite populations. Fewer than five adult mites/ leaf is unlikely to damage healthy vines, but once this level is reached, vines should be monitored each week to assess the need for treatments. Residues on leaves are generally sufficient to kill them after they hatch (egg stage lasts 2-4 days). If mite densities are very high (average of 30 or more motile mites per leaf), however, it may be necessary to apply back-to-back miticide applications, separated by 5-10 days. If mite predators are abundant, they may greatly reduce the rate of increase of spider mite populations.

*Vendex 50%WP

1.25-2 lb

Not more than two applications of *Vendex/season.

OR

Nexter

4.4-10.6 oz

†Nexter is not registered for use on Long Island. Lower rate (4.4-6.6 oz) effective against ERM. Higher rate (6.6 to 5.2 oz) required for control of two-spotted spider mite. †Nexter has some activity against grape leafhopper.

OR

Acramite 50WS

0.75-1.0 lb

Higher rates (e.g. 1.0 lb) of Acramite 50WS recommended for ERM.

OR

^*Agri-Mek 0.15EC

8-16 fl oz

Labeled for two-spotted spider mite only. Currently, European red mite is not on the label. ^*Agri-Mek 0.15EC must be applied in combination with nonionic surfactant. ^*Agri-Mek 0.15EC has some activity against grape berry moth as well, but not recommended as stand alone for it. Max per season is 32 fl oz/A.

or *Agri-Mek SC

1.75-3.5 fl oz

Labeled for two-spotted spider mite only. *Agri-Mek SC must be applied in combination with nonionic surfactant. Max per season is 7 fl oz/A.

OR

Zeal Miticide1

2.0-3.0 oz

Mainly effective against eggs and immatures so may see a delay in knock down of population. Product replaces ^Zeal, which is a granular formulation instead of WSB. One application per season.

OR

Nealta

13.7 fl oz

Effective against TSSM and ERM. Active against eggs and motile stages. Must rotate with miticide with different mode of action. Max allowed per season 27.4 fl oz/A.

OR

Onager Miticide

12-24 oz

Active against eggs and motile immatures. Only one application per year allowed.

OR

Portal

2 pts

Contact pesticide that stops feeding and egg laying, but some delay before death. Maximum allowed per season is 2 pts/A.

34395

5.2.12 PRE-HARVEST (Veraison to harvest period)

Botrytis bunch rot

See entry above under "Midsummer sprays" for a discussion of spray considerations and a listing of recommended materials.

Sour rot

Recent research has shown that disease development can be reduced through a combination of insecticide sprays to control Drosophila fly populations (see information under minor and special insect pests for labled materials) and registered broad-spectrum sterilants (e.g., Oxidate) to limit microbial populations on the berries. Some data suggest that the insecticide component may be the more important of the two, if only one of them is to be applied. This program is most effective if started around 15°Brix, about the time that berries become susceptible and before symptoms first develop, but it also can restrict further spread if initiated soon after the disease is noticed through scouting activities. Limiting various causes of injury will also greatly reduce sour rot development. Open canopies and leaf removal around clusters, which allow them to dry once rains have stopped, can lower disease severity significantly.

34396

5.2.13 POSTHARVEST

In some years and on some varieties, downy mildew may cause defoliation after harvest but well before frost; this is also possible with powdery mildew, but rapid spread of this disease is likely late in the season. Premature defoliation, especially in early harvested varieties or winter-tender Vitis vinifera, predisposes the vines to winter injury and reduces bud survival the following spring. Good control of downy and powdery mildews through August greatly reduces the need for postharvest treatments. Also note that new, young foliage is most susceptible to infection and most likely to benefit from continued protection. To delay the development of resistance, it is recommended that resistance-prone fungicides not be used during the postharvest period.

Downy mildew

Copper compounds (several formulations)

see label, rates vary

Copper may cause injury if applied during cool temperatures or under slow drying conditions.

Captan 50WP

4 lb

or Captan 80 WDG

2.5 lb

or Captec 4L

2 qt

OR

*NYDithane DF

4 lb

or Dithane M45

or Manzate Pro-Stick 75DF

or Penncozeb 75DF

OR

*NYDithane F-45

3.2 qt.

or *NYManzate Max 4F

Powdery mildew

Sulfur compounds (several formulations)

read the label

OR

JMS Stylet Oil

1-2% conc., read the label

Sufficient water to provide thorough spray coverage and a final volume of at least 1 gal of JMS Stylet Oil per acre are essential for good performance by this material.

OR

Purespray Green

1-2% conc.

OR

Regalia

1-4 qts (see label)

Regalia is a biopesticide that has provided fair to very good control of powdery mildew in NY trials, depending on disease pressure. It is likely to work best on less susceptible varieties or at times of year when pressure is low. Different rates are recommended depending on whether it is used alone or in a tank mix. Because Regalia requires 48 hours to activate plant defenses, applications need to start before infection. This product could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. Regalia should not be relied on for powdery mildew control during immediate prebloom and post bloom applications.

OR

Fracture

20.5-24.4 fl oz

Fracture is a biopesticide that has provided fair to good control of powdery mildew in NY and PA trials. It could be included in an organic spray program or in rotation before or after the critical powdery mildew control window (immediate prebloom and post bloom) to slow the development of resistance to other products. It should not be relied on for conventional powdery mildew control during this critical window. No more than 5 applications can be made during the season, and Fracture may be applied no more than twice before alternating with a product that has a different mode of action.

KEY FOR SECTION 5.2:

* Federal restricted-use pesticide*NY Restricted-use pesticide in New York State

† Not for use in Nassau/Suffolk Counties.^ Not registered for use in New York State at press time

"Need Certification Credits? Get them at the PMEP Distance learning Center".

© 2019 Cornell University All rights reserved.