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Behaviour of fipronil in soil under Sahelian Plain field conditions

✍ Scribed by Bobé, Alain; Cooper, Jean-François; Coste, Camille M.; Muller, Marie-Anne

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
382 KB
Volume
52
Category
Article
ISSN
1526-498X

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✦ Synopsis

The behaviour of Ðpronil, a phenylpyrazole insecticide used for locust control, was studied under sub-Saharan conditions in soils of the Niamey region of Niger. A formulation of Ðpronil was applied to uncultivated soils at (Adonis}) Banizoumbou and Saguia. Soil was sampled at 0È10, 10È20 and 20È30 cm depths for up to two months after treatment. Residues were analysed by gas chromatography using electron capture and mass detectors. For both soils, a rapid initial decrease of Ðpronil was observed, with rapid formation for the most part of a photodegradate. Three other metabolites of Ðpronil were also detected throughout the study. These metabolites displayed di †erent dissipation kinetics. Fipronil and its metabolites did not move beyond 10 cm depth, except for the amide, which is not considered a toxicologically signiÐcant metabolite. 1998

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