INTERACTING EFFECTS ON ABSORPTION AND TRANSLOCATION FROM TANK MIXTURES OF ALS-INHIBITING AND DIPHENYLETHER HERBICIDES

The acetolactate synthase-inhibiting herbicides chlorimuron and imazaq uin, and the diphenylether herbicides acifluorfen and lactofen, were a pplied alone and in all possible combinations to the foliage of common cocklebur, pitted morningglory, and prickly sida to evaluate interact ing effects on absorption and translocation. The addition of unlabeled acifluorfen to C-14-chlorimuron increased absorption in common cockle bur, pined morningglory, and prickly sida. Lactofen also increased abs orption of C-14-imazaquin in all species. Conversely, imazaquin reduce d absorption or translocation of C-14-acifluorfen in common cocklebur or pitted morningglory, respectively. In all species, absorption was l ower when unlabeled chlorimuron or imazaquin was combined with C-14-la ctofen than when applied alone.