... (ACCase). Mode of action Fenoxaprop-P-ethyl is a selective herbicide with contact and systemic action, absorbed principally by the ... beans, soya beans, beets, vegetables, peanuts, flax, oilseed rape, and cotton; and (when applied with the herbicide safener mefenpyr-diethyl) annual ... fenoxaprop-ethyl is rapidly hydrolysed to fenoxaprop (A. E. Smith, J. Agric. Food Chem., 1985, 33, 483); DT50 1-10 ...