Flumioxazin
Type: Herbicide
Mode of Action: Inhibiting the enzyme known as protoporphyrinogen oxidase (PPO)
Common Product Names: Chateau, Clipper, Sureguard, & Valor
What is it?
Flumioxazin is a potent herbicide belonging to the N-phenylphthalimide chemical family. It is primarily used for pre-emergent weed control, meaning it is applied before the weeds germinate to prevent their growth. However, it can also exhibit post-emergent activity against some weed species. Flumioxazin is valued for its broad-spectrum activity, controlling a wide variety of annual grasses and broadleaf weeds.
This active ingredient is particularly effective in crops like soybeans, peanuts, and cotton, as well as in non-crop areas like industrial sites and aquatic environments. It offers long-lasting residual control, typically providing protection for up to 6 to 8 weeks, depending on environmental conditions.
How does it work?
Flumioxazin disrupts the photosynthetic process in plants by inhibiting the PPO enzyme. This inhibition leads to the buildup of reactive oxygen species, causing oxidative damage to cell membranes. The result is the rapid desiccation and death of the weed. When applied as a pre-emergent herbicide, Flumioxazin forms a chemical barrier on the soil surface that prevents the germination and growth of weed seeds. In some cases, it may also control small, emerged weeds when applied post-emergently.