Propoxycarbazone-sodium
Action/Use:
- Herbicide
Use:
Postemergence herbicide used primarily to control various annual and perennial grasses in rye, triticale, and wheat. Canter* R+P controls certain grasses and broadleaf weeds in rangeland, pastures, conservtion reserve programs.
Identification
Common Name(s): Propoxycarbazone-sodium (ISO, proposed)
Chemistry
Class: Sulfonylaminocarbonyltriazolinone.
Formula: C15H17N4NaO7S.
Properties: Solid. Melting point 230-240°C. Vapor pressure <1 x 10-8 Pa (20°C).
Mode of Action / Resistance Management
Chemical Group: Sulfonylaminocarbonyl-triazolinone
Mode of Action: Inhibition of acetolactate synthase ALS (acetohydoxyacid synthase AHAS)
Action Group: HRAC Group B; WSSA Group 2
Environmental Guidelines
Hazards: Fish: LC50 (96 h) 77.2 mg/l (rainbow trout); 94.2 mg/l (bluegill sunfish); EC50 (48h) 107 mg/l (Daphnia). Bird: LD50 2000 mg/kg (bobwhite quail). Bees: LD50 (contact) 200 µg/bee
Water Solubility: 2900 ppm at pH 4, 42,000 ppm at pH 7 and pH 9
Safety Guidelines
Toxicity: (Rat): Oral LD50 >5000 mg/kg. Dermal LD50 5000 mg/kg. Inhalation LC50 5030 mg/m3
Handling/storage Cautions: Store in cool, dry place
Suppliers and Branded Products
Basic Producers:
Bayer CropScience (Attribut*, Olympus*)
Formulators' Trade Names:
Wilbur-Ellis Co. (Canter* R+P)
Premix Products:
+ Amidosulfuron+ Iodosulfuron-methyl-sodium
- Caliban Top* — Cheminova A/S
+ Iodosulfuron-methyl-sodium
- Caliban Duo* — Cheminova A/S
+ Mesosulfuron-methyl
- Olympus* Flex — Bayer CropScience
- Rimfire* — Bayer CropScience
- Rimfire* Max — Bayer CropScience
