Metsulfuron-methyl
Action/Use:
- Herbicide
Use:
Postemergence for most broadleaf weeds, some annual grass weeds in barley, wheat, fallow, triticale, pastures, rangeland, and noncropland.
Identification
Common Name(s): Metsulfuron-methyl (ANSI, ISO, BSI, WSSA)
Chemistry
Class: Sulfonylurea.
Properties: Faint, sweet ester-like, white-to-pale yellow solid. Melting point 158°C. Soluble in acetone, methanol, and methylene chloride. Slightly soluble in hexane.
Mode of Action / Resistance Management
Chemical Group: sulfonylurea
Mode of Action: interferes with an enzyme, resulting in rapid cessation of cell division in both roots and shoots
Action Group: HRAC Group B; WSSA Group 2
Registration
Outside U.S.A.: Malban* for Argentina. Allie* for Australia, Europe. ClearView* registered in Canada.
Environmental Guidelines
Soil Particle Adsorption: pKa is 3.3 (in water at 25°C) and KD value is 1.4, Flanagan silt loam (pH = 6.5, 4.02% organic matter)
Water Solubility: 270 ppm at pH 4.6, 9,500 ppm at pH 6.7
Safety Guidelines
Signal Word: CAUTION
Toxicity Class: III
Toxicity: (Rat): Oral LD50 >5000 mg/kg. (Rabbit): Dermal LD50 >2000 mg/kg
Handling/storage Cautions: Stable if kept dry
Suppliers and Branded Products
Basic Producers:
AgriGuard Ltd. (Asset*, Avail* XT, Metro 20*)
Cheminova A/S (Accurate*)
DuPont Crop Protection (Allie*, Ally* with TotalSol*, Ally* XP, Escort* XP)
Hubei Sanonda Co., Ltd. (Quit*, Refarm*)
Insecticides (India) Limited (Weed Grip*)
IPESA S.A. (Malban*)
Makhteshim Agan Group (Metgard*, Nicanor*, Rozar*, Valuron*)
Nufarm Americas Inc. (Manor*, Patriot*)
Pilar AgriScience (Canada) Corp. (Pilarscort*)
Rotam CropScience Ltd. (Rosulfuron*)
Sanonda (Australia) Pty. Ltd. (Parti-San*)
Sulphur Mills Limited (Metro 20*, Metsul*)
United Phosphorus Ltd. (Metsy*)
Wangs Crop-Science Co., Ltd. (Method*)
Zagro Singapore Pte. Ltd. (Elike*)
Formulators' Trade Names:
Cheminova, Inc. (Accurate*)
Chemiplant S.A. (Luger*)
Dhanuka Agritech Ltd. (Hook*)
M/S HPM Chemicals and Fertilizers Ltd. (Freedom*, Heerahit*)
Parijat Industries (India) Pvt. Ltd. (Metsy*)
PBI/Gordon Corp. (BLADE*)
PT. Mastec (Mitsufuron*)
SAFA TARIM A.S. (Ale*)
B.V. Industrie- & Handelsonderneming Simonis (Wopro-metsulfuron*)
Stockton Agrimor AG (Meteor*, Roter*, Rotter*)
Willowood Ltd. (Mega-Star*, SMS*)
Premix Products:
+ Acetochlor
- Miecaobao*
+ Aminocyclopyrachlor
- Streamline* — DuPont Crop Protection
+ Aminocyclopyrachlor+ Imazapyr
- Viewpoint* — DuPont Crop Protection
+ Aminopyralid
- Chaparral* — Dow AgroSciences LLC
- ClearView* — Dow AgroSciences LLC
+ Carfentrazone-ethyl
- Asset* Express — AgriGuard Ltd.
+ Chlorimuron-ethyl
- Al-Vida* — M/S HPM Chemicals and Fertilizers Ltd.
+ Chlorsulfuron
- Chisum* — Cheminova, Inc.
- Cimarron* Plus — DuPont Crop Protection
- Cimarron* X-tra — DuPont Crop Protection
- Finesse* Cereal and Fallow — DuPont Crop Protection
- Report* Extra — Cheminova, Inc.
+ 2,4-D
- Matamonte* — Dupocsa, Protectores Quimicos para el Campo S.A.
+ 2,4-D+ Dicamba
- Cimarron* Max — DuPont Crop Protection
+ Dicamba+ Thifensulfuron-methyl+ Tribenuron-methyl
- Agility* SG with TotalSol* — DuPont Crop Protection
+ Fluroxypyr
- Croupier* — AgriGuard Ltd.
+ Glyphosate
- Grand Sweeper* — AgroDragon Co., Ltd.
+ Imazapyr
- Lineage* Clearstand* — DuPont Crop Protection
+ Nicosulfuron
- Pastora* — DuPont Crop Protection
+ Picloram
- Kaput* — Insecticidas Internacionales, C.A.
- Socio* — Invesa S.A.
+ Propanil
- Propalai* — Dupocsa, Protectores Quimicos para el Campo S.A.
- Sulfonil*
+ Pyraflufen-ethyl
- Caliente* — SePRO Corp.
+ Sulfentrazone
- Blindside* — FMC Corp.
+ Sulfometuron-methyl
- Oust* Extra — DuPont Crop Protection
- Spyder* Extra — Nufarm Americas Inc.
+ Sulfosulfuron
- Total* — United Phosphorus Ltd.
+ Thifensulfuron-methyl+ Tribenuron-methyl
- Accurate* Extra — Cheminova, Inc.
- Ally* Extra SG with TotalSol* — DuPont Crop Protection
+ Triclopyr
- Ultimate* — Zelam Ltd.
Discontinued Names:
Ally Extra*
Cimarron*
Finesse*
Harmony* M
Lineage*
Lineage* HWC
Lineage* Prep
Mully*
Neptune*
Pasture MD*
Purestand*
Society*
