Metribuzin

Trade name(s) Sencor, Metribuzin 4L, TriCor, Glory and others

Manufacturer(s) Bayer CropScience, UPL, ADAMA, Winfield Solutions and others

Formulation(s) 3 lb and 4 lb/gal flowable liquid; 75% dry flowable

Remarks A selective preemergence and postemergence herbicide to control grass and broadleaf weeds. Axiom is metribuzin + flufenacet.

Water solubility 1,220 ppm

Storage conditions Stable if kept dry and stored under moderate temperatures to 15°F.

Acute toxicity LD50 - 4,000 mg/kg

Action in plant Inhibits photosynthesis.

Site of action Group 5: photosystem II inhibitor

Chemical family Triazinone

Koc 14.5 mL/g for a silt loam with 2.9% OM and pH 5.9;
Koc 17 mL/g for a clay loam with 2.2% OM and pH 6.4