Fenoxaprop

Fenoxaprop is a herbicide that is commonly used in the control of annual grasses, including those resistant to ACCase inhibitor herbicides. It is a member of the aryloxyphenoxypropionate (AOPP) group of herbicides, which also includes quizalofop, haloxyfop, and clodinafop.

Chemistry

Fenoxaprop is a synthetic compound that is derived from phenoxypropionic acid. It is a selective herbicide, meaning it is designed to kill specific plants while leaving others unaffected. The chemical formula for fenoxaprop is C18H16ClNO5.

Mode of Action

Fenoxaprop works by inhibiting the enzyme acetyl-CoA carboxylase (ACCase), which is essential for lipid biosynthesis in plants. This inhibition prevents the plant from producing the fatty acids it needs for growth and development, leading to the plant's death.

Usage

Fenoxaprop is used in a variety of crops, including wheat, barley, and oats. It is also used in non-crop areas such as roadsides and industrial sites. The herbicide is typically applied as a post-emergence treatment, meaning it is used after the target weeds have emerged from the soil.

Safety

Like all herbicides, fenoxaprop should be used with caution. It can be harmful if swallowed, inhaled, or absorbed through the skin. It is also harmful to aquatic life. Always follow label instructions when using fenoxaprop.

Resistance

Resistance to fenoxaprop and other ACCase inhibitors has been reported in several grass species. This resistance is typically due to a mutation in the ACCase gene that prevents the herbicide from binding to the enzyme.

See Also

• Herbicide resistance
• Pesticide
• Weed control