1Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake, Bangalore-560089
Pesticide Residue Laboratory, Division of Soil Science and Agricultural Chemistry, Indian Institute of Horticultural Research, Hessaraghatta Lake, Bangalore-560089
*Correspondence: smpanda@iihr.ernet.in
Online published on 15 October, 2011.
Initial deposits of 0.80 and 1.40 mg kg−1 were recovered on whole acid lime fruit following spray treatment of λ-cyhalothrin (Karate 5 EC) @ 15 and 30 g ai ha−1. Juice samples were analyzed from 5th day onwards and showed maximum residues of 0.08 and 0.13 mg kg−1 on the 10th day, which were below the prescribed MRL value of 0.2 mg kg1. The residues of λ-cyhalothrin persisted for 20 days on whole fruit as well as juice, but beyond 10 days the level of residues was very low. The residues in the whole fruit dissipated with a half-life of 3.4 days and the suggested safe pre-harvest interval was 8 and 11 days from the lower and higher doses, respectively.
λ-Cyhalothrin, Acid lime, Pre-harvest interval, Half-life
