Trade name(s) Sharpen, Treevix

Manufacturer(s) BASF

Formulation(s) 2.8 lb/gal soluble concentrate, , 70% WDG

Remarks Selective herbicide for control of broadleaf weeds, used preplant, preemergence and as a defoliant.

Water solubility 0.14 ppm at pH 4, 0.25 ppm at pH 5, and 21 ppm at pH 7

Acute toxicity LD50 - greater than 2,000 mg/kg

Action in plant Inhibits protoporphyrinogen oxidase (PPO) that disrupts cell membranes.

Site of action Group 14: protoporphyrinogen oxidase inhibitor

Chemical family Pyrimidinedione

Koc Average is 9 to 56 mL/g