Dissipation of imidacloprid on sweet orange fruits

Abstract

Dissipation pattern of imidacloprid residues in fruits of sweet orange and elimination of its residue through washing were studied at North region, Hisar, Haryana, India during Kharif season year 2014-15. Residues were determined by highperformance liquid chromatography (HPLC). The average initial deposits of imidacloprid on the sweet orange rind was found to be 1.12 and 2.33 mg kg-1and in thecase of pulp it was 0.13 and 0.32mg kg-1from treatment at the recommended and double the recommended dose, respectively. The residues dissipated with time regularly in both the cases showing 70% dissipation in case of rind and showing 97% dissipation in case of pulp. The residues show 79.53 % reduction on 0 (2h after spray) day due to washing in single dose and 84.62% in case of double dose.