Haloxyfop-P-methyl is a selective herbicide controlling annual and perennial grasses in dicotyledoneous crops like sugar beet, canola and vegetables. After uptake by plants, the methylester is rapidly hydrolysed to yield haloxyfop, which is the active moiety. In grasses, haloxyfop-P acts by competitively binding to the Acetyl-CoA-carboxylase (ACCase) that catalyzes the biosynthesis of fatty acid.