Formation and Persistence of Metabolites of Imazamethabenz-methyl in a Sandy Loam Soil
(1994) Weed Research — Vol. 34, n° 5, p. 309-317 (1994)
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- The fate of imazamethabenz-methy1 was studied in a sandy loam soil after application in spring to winter wheat (Triticum aestivum L.). Imazamethabenz-methyl and its metabolite 2 (2-(4, 5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-H-1-imidazol-2-yl)4-methylbenzoic acid, in mixture with the 5-methylbenzoic acid isomer) were further transformed into the metabolites 3 (2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-H-1-imidazol-2-yl)-1,4-benzenedicarboxylic acid, in mixture with the 1,5-benzenedicarboxylic acid isomer), and 4 (1,2,4-benzenetricarboxylic acid, in mixture with the 1,2,5-isomer). Meta-bolites 3 and 4 reached maximum concentration levels in the 0-13 cm layer corresponding to 14-17% and 9-14% of the imazamethabenz-methy1 dose, respectively. These maxima were reached be tween 105 and 177 days after application. Imazamethabenz-methyl metabolism was slower in plots treated with organic fertilizers than in untreated plots. After 196 days the concentrations of all metabolites in the 0-13 cm layer had declined to, at most, 0.01 mg kg(-1). There was no carry-over of residues that could be phytotoxic to the next crop.
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Rouchaud, J., Gustin, F., Callens, D., Vanhimme, M., & Bulcke, R. (1994). Formation and Persistence of Metabolites of Imazamethabenz-methyl in a Sandy Loam Soil. Weed Research, 34(5), 309-317. https://doi.org/10.1111/j.1365-3180.1994.tb01999.x (Original work published 1994)