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Metabolic Fate of Methyl-2-Benzimidazole Carbamate in Melon Plants. J. P. Rouchaud, Université Catholique de Louvain, Laboratoire de Phytopathologie, 42, de Croylaan, 3030 Heverlee, Belgium; J. R. Decallonne(2), and J. A. Meyer(3). (2)(3)Université Catholique de Louvain, Laboratoire de Phytopathologie, 42, de Croylaan, 3030 Heverlee, Belgium. Phytopathology 64:1513-1517. Accepted for publication 28 June 1974. DOI: 10.1094/Phyto-64-1513.

The metabolism of methyl-2-benzimidazole carbamate (MBC) was studied in melon plants grown in a liquid nutrient solution containing benomyl. The plants were treated for 2 months with a 20 µg/ml of benomyl; seven metabolites were identified in the leaves by gas-liquid chromatography: MBC, 2-aminobenzimidazole (2-AB); benzimidazole; o-aminobenzonitrile; aniline; the beta-glycosidic conjugates of MBC and 2-AB. Some other metabolites could not be identified. A metabolic pathway for benomyl in melon plants is suggested.