Environmental Profile
HAZARDS:
Bird: Oral LD50 >2000 mg/kg (bobwhite quail, mallard duck). LC50 >5000 ppm (bobwhite quail, mallard duck)
Environmental fate:
Animals:In rats, following oral administration, 91% was eliminated within 24 h, mainly in the faeces, as unchanged foramsulfuron. Metabolism proceeds largely as in plants.Plant:In maize, metabolism is by hydrolysis of the sulfonylurea bridge, with formation of 4-formylamino-N,N-dimethyl-2-sulfamoylbenzamide and 2-amino-4,6-dimethoxypyrimidine, and by hydrolysis of the formamide moiety on the phenyl ring to produce 4-ami