Flumioxazin

Trade name(s) Valor, Chateau, SureGuard, Payload, BroadStar, Outflank, Warfox

Manufacturer(s) Valent, ADAMA

Formulation(s) 41% and 51% water-dispersible granule, 0.25% granular

Remarks A preemergence and postemergence herbicide for controlling some broadleaf weeds. Has some residual effect when used preemergence. Rapidly burns down broadleaf weeds when used postemergence.

Water solubility 1.78 ppm

Storage conditions Stable under normal storage conditions.

Acute toxicity LD50 - greater than 5,000 ppm

Action in plant Acts as a contact-type herbicide disrupting chlorophyl synthesis leading to cell membrane disintegration.

Site of action Group 14: protoporphyrinogen oxidase inhibitor

Chemical family N-phenylphthalimide