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Kumar, Nagendra
- Dissipation and Decontamination of Imidacloprid and Lambda - Cyhalothrin Residues in Brinjal
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Authors
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1 Department of Entomology, Rajendra Agricultural University, Pusa, Samastipur (Bihar), IN
1 Department of Entomology, Rajendra Agricultural University, Pusa, Samastipur (Bihar), IN
Source
International Journal of Plant Protection, Vol 8, No 2 (2015), Pagination: 379-383Abstract
Residues ofimidacloprid at 20 g a.i. ha-1 and lambda - cyhalothrin at 15 g a.i. ha-1 were estimated quantitatively by HPLC/GLC in/on brinjal fruits. Initial deposits of insecticides were higher in imidacloprid than lambda - cyhalothrin. Initial deposits of 0.652 mg kg-1 of imidacloprid dissipated to 93.17 per cent on 10th day. In lambda - cyhalothrin the initial deposits were 0.138 mg kg-1 which dissipated to 92.75 per cent on 10th day. The degradation of imidacloprid was relatively higher as compared to lambda - cyhalothrin. Both imidacloprid and lambda - cyhalothrin had half - life values of 1.92 and 2.65 days, respectively on brinjal fruits. The safe waiting period for imidacloprid was found 4.70 days. In lambda - cyhalothrin, no waiting period is required after its application as the initial deposits were less than its MRL (0.3 mg kg-1).Keywords
Dissipation, Decontamination, Imidacloprid, Lambda - Cyhalothrin, Brinjal.
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