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Crop and Pest Management Guidelines

A Cornell Cooperative Extension Publication
Page Contents
44760

*Asulox

Common Name: sodium salt of asulam

Formulation: 3.34SC

Uses: Postemergent weed control in some ornamentals, turf, Christmas tree plantings, and non-cropland. For agricultural or commercial use only; not for use by homeowners.

Amount of active ingredient

Amount by formulation

3.34SC

Per Acre

3.34 lb.

1 gal.

Per 1,000 sq. ft.

3 oz.

Major Weeds Controlled: Difficult to control grasses, including barnyard grass, crabgrass, fall panicum, foxtails, goosegrass, and horseweed (Conyza canadensis) and bracken fern.

Major Weeds Not Controlled: Most broadleaf and perennial weeds.

For Best Results: Use a minimum of 20 gallons of solution per acre. Apply a single postemergent broadcast application per season.

Cautions and Precautions: Do not use surfactant in ornamental applications. Low temperature and humidity decrease absorption.

Residual Activity: Residual control of grasses germinating from seed will persist for 6 to 10 weeks, depending on field conditions.

Volatility and Leaching Potential: Leaching potential is high.

Symptoms and Mode of Action: Asulam is a carbamate herbicide; primary mode of action is to inhibit DHP synthase, an enzyme involved in folic acid synthesis. Asulam also appears to be a mitotic inhibitor preventing function in meristematic tissues. Symptoms include chlorosis in young weeds and plant stunting followed by necrosis.

Manufacturer: UPL NA

EPA Reg. No.: 70506-139

*Restricted use pesticide.