Trade name(s) Velpar, Velpar DF, Velpar L, Pronone
Manufacturer(s) Bayer Environmental Science, DuPont, Helena and others
Formulation(s) 2 lb/gal miscible liquid, 75% granule, 10% granule
Remarks A foliar- or soil-applied herbicide with soil activity for broadleaf weed, brush, and grass control in cropland, noncropland, forest lands, and rangeland. Westar is sulfometuron + hexazinone.
Water solubility 33,000 ppm
Storage conditions Store above 32°F.
Acute toxicity LD50 - 860 mg/kg
Action in plant Inhibits photosynthesis.
Site of action Group 5: photosystem II inhibitor
Chemical family Triazinone
Koc Average is 54 mL/g