Flumetsulam
Action/Use:
- Herbicide
Use:
For use on corn and soybeans. SureStart* for use only on herbicide-tolerant field and silage corn.
Chemistry
Class: Triazolopyrimidine; triazolopyrimidine sulfonanilide.
Formula: C12H9F2N5O2S.
Properties: Off-white to light tan solid. Melting point 253°C. Vapor pressure 2.8 x 10-15 mm Hg at 25°C. Solubility at 25°C: acetone <1.6 g/100 ml; methanol <0.4 g/100 ml; n-hexane and xylene are insoluble.
Mode of Action / Resistance Management
Chemical Group: Triazolopyrimidine
Mode of Action: Inhibition of acetolactate synthase ALS (acetohydoxyacid synthase AHAS)
Action Group: HRAC Group B; WSSA Group 2
Registration
U.S.A.: A.i. marketed only in premixes for corn and soybeans.
Outside U.S.A.: Broadstrike*, Scorpion*, Preside* (Argentina).
Environmental Guidelines
Hazards: (Tech) Fish: LC50 (96 h) >300 mg/l (bluegill sunfish), >293 mg/l (rainbow trout). Bird: Oral LD50 >2250 (bobwhite quail). Bee: LD50 >100 µg/bee
Water Solubility: At 25°C: 49 mg/l (pH 2.5), 5600 mg/l (pH 7)
Safety Guidelines
Toxicity: Tech (Rat): Oral LD50 >5000 mg/kg. Inhalation LC50 (4 h) 1.2 mg/l. (Rabbit): Dermal LD50 >2000 mg/kg. Nonirritating to eye, skin
Suppliers and Branded Products
Basic Producers:
Dow AgroSciences LLC (Broadstrike*, Preside*, Python*, Scorpion*)
Formulators' Trade Names:
B.V. Industrie- & Handelsonderneming Simonis (Wopro-flumetulam*)
Villa Crop Protection (LAUREL*)
Zelam Ltd. (Headstart*)
Premix Products:
+ Acetochlor+ Clopyralid
- SureStart* — Dow AgroSciences LLC
- TripleFLEX* — Monsanto Co.
+ Bentazone+ Thifensulfuron-methyl
- Sinfony* — BASF Corporation
+ Clopyralid
- Hornet* — Dow AgroSciences LLC
Discontinued Names:
Accent Gold*
Bicep MAGNUM* TR
Broadstrike*+Dual*
Broadstrike*+Treflan*
Scorpion* III
