of Agricultural and Food Chemistry - American Chemical Society

of Agricultural and Food Chemistry 0 Copyright 1980 by the American Chemical Society

Volume 28, Number 4 JulylAugust 1980

Metabolic Fate of the Herbicide Dicamba in a Lactating Cow Delbert D. Oehlerl and G. Wayne Ivie* The herbicide dicamba (Banvel, 3,6-dichloro-2-methoxybenzoic acid) was rapidly absorbed, only partly metabolized, and rapidly excreted by a lactating cow after oral treatment during a 5-day period at a dose equivalent to 2.2 mg kg-' day-' or about 60 ppm of dietary dicamba. Within 6 h after the final [14C]dicambadose, about 89% of the administered 14Chad been excreted in the urine,