Author(s):

VK Bhamare

Abstract: The present investigation on estimation of acetamiprid residues in cotton lint, seed, oil and soil was conducted at Department of Agricultural Entomology, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (MS) India. The results of harvest time residues of acetamiprid evidenced that cotton lint samples contained higher amount of acetamiprid residues as compared to cotton seed and oil. None of the treatments showed residues in cotton lint and seed below MRL (0.1 mg/kg). However, in cotton oil residues were detected below MRL except in oil samples collected from acetamiprid + cypermethrin (20+100) g, acetamiprid + quinalphos (20+1000) g and acetamiprid + chlorpyrifos (20+1000) g a.i.ha^-1 treated plots. The residue levels of acetamiprid in soil samples were below MRL in all the treatments. The overall results concluded that these newer insecticidal combinations (acetamiprid + cypermethrin, acetamiprid + chlorpyrifos and acetamiprid + quinalphos) can be used as effective tools in management of cotton insect-pests with a word of caution that they carry residues much above MRL. As such this schedule needs to be recasted using lower concentrations for harvest time residues.

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