Absorption, Translocation, and Metabolism of Imazaquin in Pitted (Ipomoea lacunosa) and Entireleaf (Ipomoea hederaceavar.integriuscula) Morningglory
Pitted morningglory and entireleaf morningglory treated with14C-imazaquin translocated14C to areas above and below the treated leaf. Pitted morningglory absorbed and translocated more14C from14C-imazaquin than entireleaf morningglory. Translocation of14C from root-supplied14C-imazaquin was similar in both species 1 d after treatment, with14C moving rapidly to the shoots. Entireleaf morningglory metabolized slightly more imazaquin than pitted morningglory in treated leaves. Greater tolerance of entireleaf morningglory than pitted morningglory to postemergence applications of imazaquin is attributed to reduced absorption and translocation and increased metabolism of the herbicide in the entireleaf morningglory.
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