Trade name(s) Osprey
Manufacturer(s) Bayer CropScience
Formulation(s) 4.5% water-dispersible granule
Remarks Postemergence herbicide used primarily to control annual grasses and some broadleaf weeds in winter wheat.
Water solubility 7 ppm at pH 5; 48 at pH 7
Storage conditions Protect from extreme heat and cold
Acute toxicity LD50 - greater than 5,000 mg/kg
Action in plant Inhibits the acetolactate synthase (ALS) enzyme, resulting in rapid cessation of cell division and plant growth in both roots and shoots.
Site of action Group 2: acetolactate synthase (ALS) inhibitor
Chemical family Sulfonylurea