P. Sweetser, G. S. Schow, J. M. Hutchison
Feb 1, 1982
Citations
8
Influential Citations
216
Citations
Quality indicators
Journal
Pesticide Biochemistry and Physiology
Abstract
Abstract A major factor responsible for the selectivity of chlorsulfuron [2-chloro- N -[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl]benzenesulfonamide] (formerly DPX-4189), as a postemergence herbicide for small grains is the ability of the crop plants to metabolize the herbicide. Chlorsulfuron is the active ingredient in Du Pont “Glean” weed killer. Tolerant plants such as wheat, oats, and barley rapidly metabolize chlorsulfuron to a polar, inactive product. This metabolite has been characterized as the O -glycoside of chlorsulfuron in which the phenyl ring has undergone hydroxylation followed by conjugation with a carbohydrate moiety. Sensitive broadleaf plants show little or no metabolism of chlorsulfuron.