Author(s):

Sakshi H Thantharate, SD Desai, VS Desai, AD Rane, NK Hatwar and YR Parulekar

Abstract: Residues of deltamethrin, a pyrethroid insecticide has been determined in Alphonso mango by high -performance liquid chromatography with UV detection at 233 nm after extraction by chloroform and a silica gel clean-up. Deltamethrin was sprayed at recommended (9 ml/10 lit) and double recommended (18 ml/10 lit) doses on Mango trees. Mangoes from such treated trees were harvested and analyzed at 1, 5, 10, 15 and 25^th day after spraying. Recommended dose showed residue of 0.14 ppm which was reduced to 0.08 ppm on 5^th day and thereafter was not detectable. Double recommended dose recorded residue of 0.20 ppm which was reduced to 0.12 ppm on 5^th day and later was not detectable.

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