1Division of Agricultural Chemicals,
2Division of Entomology, Indian Agricultural Research Institute, New Delhi-110 012, India.
Online published on 31 October, 2011.
Imidacloprid was applied as seed treatment (Gaucho 70 WS, 5 and 10 g ai kg”1 seed) and foliar spray (Confidor 200 SL, 20 and 40 g ai ha−1) at 50% pod formation stage on mustard, Brassica campestris Linn, in two separate experiments to control the mustard aphid, Lipaphis erysimi Kalt. Imidacloprid controlled the aphid population when used as seed as well as foliar spray treatment. The lower treatment rates (seed treatment 5 g ai kg−1 and foliar spray @ 20 g ai ha−1) proved sufficient to optimise the yield of mustard crop. Mustard grains and soil at harvest did not contain imidacloprid residues. The results also revealed that there was no build up or leaching of imidacloprid in soil.
Imidacloprid, bioefficacy, aphid, mustard, seed treatment, spray application, residues
