Trade name(s) Empero, Sandea, Sedgehammer and others
Manufacturer(s) Atticus, Gowan, Nufarm America and others
Formulation(s) 5% and 75% water-soluble granule
Remarks A selective herbicide for controlling broadleaf weeds and yellow nutsedge in several crops
Water solubility 15 ppm at pH 5; 1,630 ppm at pH 7.
Storage conditions Stable when excess moisture or humidity are excluded from container.
Acute toxicity LD50 - 8,860 mg/kg
Action in plant Interferes with acetolactate synthase enzyme, resulting in a 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
Koc 93.5 mL/g for a Drummer silty clay loam; Koc 113.7 mL/g for Sarpy soil; Koc 199.2 mL/g for a Sable soil; Koc 31.1 mL/g for a Spinks soil