Trade name(s) Karmex, Diuron, Direx, Parrot

Manufacturer(s) Corteva, Griffin Corp., Platte Chemical Co., ADAMA

Formulation(s) 80% wettable powder, 80% dry flowable, 4 lb/gal water dispersible liquid

Remarks A substituted urea compound used preemergence to control annual weeds and certain perennials in noncropland and certain agricultural crops. Plant roots absorb and translocate material. It is foliar absorbed when used with a wetting agent. Diuron may persist several months in soil.

Water solubility 42 ppm

Storage conditions Stable at moderate temperatures.

Acute toxicity LD50 - 3,400 mg/kg

Action in plant Inhibits photosynthesis.

Site of action Group 7: photosystem II inhibitor

Chemical family Substituted urea

Koc Average is 480 mL/g