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Persistence of Combination Formulation of Flubendiamide + Thiacloprid in/on Cucumber under Sub-tropical Climate of North India

机译:Persistence of Combination Formulation of Flubendiamide + Thiacloprid in/on Cucumber under Sub-tropical Climate of North India

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摘要

Dissipation of a mixed formulation of flubendiamide 240 + thiacloprid 240 SC (w/v) applied @ 60 and 120 g a.i. ha~(-1) on cucumber fruits to work out the half lives and waiting periods of both the components of the formulation for a safe consumption of cucumber is reported. The residues of flubendiamide and thiacloprid were processed as per QuEChERS method and quantified by HPLC equipped with PDA detector. The half-lives of 1.61 to 2.09 d for total flubendiamide; 2.09 and 2.18 for thiacloprid @ 60 and 120 g a.i. ha-1 respectively were worked out. Flubendiamide and thiacloprid residues dissipated to below their determination limit of 0.05 mg kg1 at 10 and 5 d respectively when applied @ 60 g a.i. ha-1. Soil samples collected at 20 d of application did not show the presence of flubendiamide, des-iodo flubendiamide and thiacloprid at their determination limit of 0.05 mg kg1. A pre harvest interval of 7 d is suggested at the recommended dosage.

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