Halosulfuron-methyl
Action/Use:
- Herbicide
Use:
Annual broadleaf weeds and nutsedge in corn, grain sorghum, sugarcane, rice, turf. Tribute* Total for use on lawns and golf courses.
Identification
Common Name(s): Halosulfuron-methyl (BSI, ISO draft)
Chemistry
Class: Sulfonylurea.
Properties: Odorless, white, crystalline solid. Melting range 175.5°-177.2°C. Soluble in methylene chloride, dioxane. Slightly soluble in methanol, toluene. Permit*: Brown granules. pH 6.6 (1% solution).
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.: Permit* in Australia, Italy, Japan, South Africa.
Environmental Guidelines
Water Solubility: 15 ppm at pH 5, 1,630 ppm at pH 7
Safety Guidelines
Signal Word: CAUTION (Manage*, Permit*)
Toxicity Class: III
Toxicity: Tech: (Rat): LD50 8860 mg/kg. Manage*, Permit* (Rat): Oral LD50 1287 mg/kg; Dermal LD50 >5000 mg/kg; Inhalation (4 h) >5.7 mg/l. (Rabbit): Moderate eye irritant; slight skin irritant
Handling/storage Cautions: Stable when excess moisture or humidity are excluded from container
Protective Clothing: Long-sleeved shirt and long pants. Shoes plus socks.
Suppliers and Branded Products
Basic Producers:
Fertiagro Pte. Ltd. (Fermit*)
Nissan Chemical Industries, Ltd. (Permit*, Sempra*)
Nufarm Americas Inc. (Prosedge*)
Formulators' Trade Names:
Gowan Company (Permit*, Sandea*, SedgeHammer*, SedgeHammer+*, Sempra*)
Premix Products:
+ Dicamba
- Yukon* — Gowan Company
+ Foramsulfuron+ Thiencarbazone-methyl
- Tribute* Total — Bayer CropScience
+ Orthosulfamuron
- Strada* Pro — ISAGRO USA, Inc.
+ Thifensulfuron-methyl
- Permit Plus* — Nissan Chemical Industries, Ltd.
Discontinued Names:
Battalion*
Manage*
