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Absorption translocation and metabolism of acifluorfen and lactofen in pitted morningglory ipomoea lacunosa and ivyleaf morningglory ipomoea hederacea



Absorption translocation and metabolism of acifluorfen and lactofen in pitted morningglory ipomoea lacunosa and ivyleaf morningglory ipomoea hederacea



Weed Science 36(2): 141-145



Experiments were conducted to determine 14C absorption, translocation, and metabolism by pitted morningglory (Ipomoea lacunosa L. #3 IPOLA) and ivyleaf morningglory [Ipomoea hederacea (L.) Jacq. # IPOHE] foliarly treated with 14C-acifluorfen [5-(2-chloro-4-(trifluoromethyl)phenoxy)-2-nitrobenzoic acid] or 14C-lactofen [(.+-.)-2-ethoxy-1-methyl-2-oxoethyl-5-(2-chloro-4-(trifluoromethyl)phenoxy)-2-dinitrobenzoate]. Seventy-one to 84% of applied 1C-acifluorfen was recovered in leaf water wash of ivyleaf morningglory compared to 32 to 46% from pitted morningglory. Sixty-four percent of applied 14C-lactofen was recovered in leaf water wash 96 h after treatment in both morningglory species. Thirty-five to 37% more 14C from applied 14C-acifluorfen was found in pitted morningglory treated leaves than ivyleaf morningglory treated leaves. Less than 28% of applied 14C-lactofen was extracted from treated leaves of either morningglory species. Translocation and metabolism of 14C-acifluorfen and 1C-lactofen were minimal in both morningglory species.

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Accession: 004650099

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DOI: 10.2307/4044861


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