Metolachlor

BiochemistryCell division inhibitor; more recent research suggests chloroacetamides may inhibit synthesis of very long chain fatty acids (J. Schmalfuss et al., Abstr. Meeting WSSA, Toronto, 2000, 40, 117-118; P. Böger, Abstr. III Int. Weed Control Congr., Brazil, 2000). Maize tolerance of chloroacetamides is attributed to rapid detoxification by glutathione transferases. ModeofactionSelective herbicide, absorbed predominantly by the hypocotyls and shoots. Inhibits germination. UsesControl of annual grasses and some broad-leaved weeds in maize, sorghum, cotton, sugar beet, fodder beet, sugar cane, potatoes, peanuts, soya beans, safflowers, sunflowers, various vegetables, fruit and nut trees, and woody ornamentals. Applied pre-emergence, pre-plant incorporated or early post-emergence, at 1.0-2.5 kg/ha. Often used in combination with broad-leaved herbicides, to extend the spectrum of activity. PhytotoxicityWell tolerated by most broad-leaved crops, maize, sorghum (when safened with fluxofenim or oxabetrinil). FormulationtypesEC; FW; GR; SC.