bensulfuron-methyl 60% in herbicide

Specifications

bensulfuron-methyl herbicide 60%WDG for rice herbicide
Best quality/price/service
Professional package
FAO Standards

Common name : bensulfuron-methyl

 

Classification: selective herbicide in rice ,  is most effective on irrigated paddy fields
 

Chemical  name: methyl 2-[[[[[(4,6-dimethoxypyrimidin-2-yl)-amino]carbonyl]amino]sulfonyl]methyl]benzoate

 

APPLICATIONS
bensulfuron-methyl
Biochemistry Branched chain amino acid synthesis (ALS or AHAS) inhibitor. Acts by inhibiting biosynthesis of the essential amino acids valine and isoleucine, hence stopping cell division and plant growth. Selectivity is due to rapid metabolism in the crop. Metabolic basis of selectivity reviewed (M. K. Koeppe & H. M. Brown, Agro-Food-Industry, 6, 9-14 (1995)).  Mode of action Selective systemic herbicide, absorbed by the foliage and roots, with rapid translocation to the meristematic tissues.  Uses Selective pre- and post-emergence control of annual and perennial weeds and sedges (e.g. Butomus umbellatus, Scirpus maritimus, Scirpus mucronatus, Alisma plantago-aquatica, Sparganium erectum, Cyperus spp., Typha spp., etc.) in continuously flooded rice, at 30-100 g/ha.  Formulation types GR; WG; WP.  Selected tradenames: 'Londax' (Du Pont); mixtures: 'Fujigrass' (+ esprocarb) (Du Pont, Syngenta); 'Kusastop' (+ indanofan) (Mitsubishi Chemical); 'Wolf-Ace' (+ mefenacet+ thiobencarb) (Kumiai); 'Zark' (+ mefenacet) (Du Pont, Kumiai, Nihon Bayer, Sankyo

 

 

MAMMALIAN TOXICOLOGY
bensulfuron-methyl
Oral Acute oral LD50 for rats >5000, mice >10 985 mg/kg.  Skin and eye Acute percutaneous LD50 for rabbits >2000 mg/kg. Non-irritant to skin and eyes.  Inhalation LC50 (4 h) for rats >7.5 mg/l air.  NOEL (2 y) for rats 750 mg/kg diet. Reproduction (2-generation) NOEL in rats 7500 mg/kg diet; teratogenicity NOEL in rats 500, rabbits 300 mg/kg. Not a mutagen.  ADI 0.2 mg/kg.  Toxicity class WHO (a.i.) III (Table 5); EPA (formulation) IV  EC hazard R43| N; R51, R53 

 

 

ECOTOXICOLOGY
bensulfuron-methyl
Birds Acute oral LD50 for mallard ducks >2510 mg/kg. Dietary LC50 (8 d) for bobwhite quail, mallard ducks >5620 mg/l.  Fish LC50 (96 h) for rainbow trout and bluegill sunfish >150 mg/l; LC50 (48 h) for carp >1000 ppm.  Daphnia LC50 (48 h) >100 mg/l.  Bees LD50 >12.5 mg/bee. 

 

 

ENVIRONMENTAL FATE
bensulfuron-methyl
Animals Almost completely biotransformed and rapidly excreted in urine and faeces of rats and goats.  Plants After uptake by rice, converted to a non-herbicidal metabolite.  Soil/Environment DT50 4-20 w on Flanagan and Keyport silt loam soils. In rice fields, DT50 in water averages 4-6 d.