The degradation of diflubenzuron and its chief metabolites in soils. Part I: Hydrolytic cleavage of diflubenzuron |
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| Authors: | Wijnand B Nimmo Pieter C De Wilde Arie Verloop |
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| Institution: | Duphar B.V., Crop Protection Division, Biochemical Department, 's-Graveland, The Netherlands |
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| Abstract: | 14C]Diflubenzuron is readily degraded in various agricultural soils and in hydro-soil; 50% of the applied dose of 1 mg kg−1 was metabolised in 2 days or less. The chief products of hydrolysis were identified as 4-chlorophenylurea and 2, 6-difluorobenzoic acid. A part of the radioactivity, increasing with incubation time, could not be extracted. Release from the soil of 14C]carbon dioxide, derived from both labelled phenyl rings, points to the ultimate mineralisation of diflubenzuron. |
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