Trade name(s) Tough

Manufacturer(s) Belchim Crop Protection

Formulation(s) 5 lb/gal emulsifiable concentrate

Remarks Postemergent, contact herbicide that controls annual broadleaf weeds in the two- to four-leaf stage.

Water solubility 1.5 ppm

Storage conditions Store in freeze-free, dry area.

Acute toxicity LD50 - 4,600 mg/kg

Action in plant Blocks photosynthesis.

Site of action Group 6: photosystem II inhibitor

Chemical family Phenyl-pyridazine