Sulfometuron-methyl
Action/Use:
- Herbicide
Use:
Controls many annual, biennial, and perennial grasses and annual broadleaf weeds growing in noncropland, and reforestation areas including certain conifers and hardwoods. Effective for control of johnsongrass. Gives contact and residual control; used alone and in combination with other residuals for nonselective use. Also recommended for selective weed control in bermudagrass, bahiagrass, crested wheatgrass, and smooth brome on noncrop sites.
Identification
Common Name(s): Sulfometuron-methyl (ANSI, ISO, BSI, WSSA)
Chemistry
Properties: Odorless, white solid. Melting point 203-205°C. Slightly soluble in ether and xylene; highly soluble in acetone, acetonitrile.
Mode of Action / Resistance Management
Chemical Group: Sulfonylurea
Mode of Action: Inhibition of acetolactate synthase ALS (acetohydoxyacid synthase AHAS)
Action Group: HRAC Group B; WSSA Group 2
Environmental Guidelines
Water Solubility: 10 ppm at pH 5, 300 ppm at pH 7
Safety Guidelines
Signal Word: CAUTION
Toxicity Class: III
Toxicity: (Rat): Oral LD50 5000 mg/kg
Handling/storage Cautions: Stable
Suppliers and Branded Products
Basic Producers:
Premix Products:
+ Chlorsulfuron
- Landmark* XP — DuPont Crop Protection
+ Chlorsulfuron+ Sulfentrazone
- Throttle* XP — DuPont Crop Protection
+ Hexazinone
- Oustar* — DuPont Crop Protection
- Westar* — DuPont Crop Protection
+ Metsulfuron-methyl
- Oust* Extra — DuPont Crop Protection
- Spyder* Extra — Nufarm Americas Inc.
Discontinued Names:
Landmark* II MP
Landmark* MP
Lineage*
Lineage* HWC
Lineage* Prep
