2006•Journal of Entomological ResearchRequires access

Studies on the residues fate of quinalphos, methomyl and alpha-cypermethrin in paddy under West Bengal conditions

Arunava Samanta, S.K. Jana, N. Nair, Arpita Hazra Chowdhury, A. K. Somchoudhury

Abstract

Field studies conducted with three insecticide viz, quinalphos, methomyl and alpha-cypermethrin at their recommended and double the recommended dosages to detect residues in grain and straw at harvest revealed that no residues could be detected in harvested paddy irrespective of treatments and insecticides. Methomyl dissipated at faster rate in comparison to quinalphos. Both quinalphos and methomyl reached BDL 15 days after final spraying in grain and straw. On the other hand alpha-cypermethrin reached BDL 21 days after final spraying.

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Key concepts: Quinalphos, Methomyl, Toxicology, Cypermethrin, Straw, Forensic science, Agronomy, Veterinary medicine