Triasulfuron
Action/Use:
- Herbicide
Use:
Preemergence in wheat to control broadleaf and grassy weeds; postemergence in wheat, barley, and fallow to control broadleaf weeds. Dally* and Tie Down* for control of weeds in pastures, rangeland, and Conservation Reserve Program acres.
Identification
Common Name(s): Triasulfuron (BSI, ISO draft)
Chemistry
Class: Sulfonylurea.
Properties: Light brown granules; odorless. Melting point 186°C.
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
Registration
Outside U.S.A.: Sold commercially in Europe.
Environmental Guidelines
Soil Particle Adsorption: Adsorption to clay or soil colloids is relatively low, and thus leaching can occur. Further studies underway
Water Solubility: 40 ppm at pH 5, 1500 ppm at pH 7
Safety Guidelines
Signal Word: CAUTION
Toxicity Class: III
Toxicity: Tech (Rat): Oral LD50 >5000 mg/kg; Inhalation LC50 >2.32 (4 h) mg/l air. (Rabbit): Dermal LD50 >2000 mg/kg. Minimally irritating to eyes; non-irritating to skin
Handling/storage Cautions: Stable. Do not expose to light or moisture
Protective Clothing: Long-sleeved shirt and long pants. Waterproof gloves. Shoes plus socks. Protective eyewear.
Suppliers and Branded Products
Basic Producers:
Agro-Care Chemical Industry Group Limited (Challenger*)
Syngenta (Amber*, Logran*)
Formulators' Trade Names:
B.V. Industrie- & Handelsonderneming Simonis (Wopro-trisulfuron*)
Villa Crop Protection (Disgran*)
Wilbur-Ellis Co. (Dally*)
Discontinued Names:
Exa*
