A field experiment on mustard var. Varuna was conducted during Rabi season of year 2013-14 and 2014-15 at CSAUA&T, Kanpur. Among the various insecticides evaluated against the mustard aphid, Lipaphis erysimi Kalt, imidacloprid 17.8 SL @ 0.2 g/litre showed highest reduction Significantly lower mean aphid intensity 14 days after second spray 6.89 and 19.66 aphids/ 10 cm apical shoot were recorded on the crop treated with imidacloprid 17.8 SL with 94.09 and 90.34 percent reduction over control which provided significantly highest seed yield 2287 and 2235 kg/ha with 40.73 and 37.79 percent increase in yield, respectively. Application of Thiamethoxam 25% WP was found second best treatment with 8.49 and 23.46aphids 10 cm apical shoot 14 days after second spraying with 89.91 and 87.54 percent reduction over control during both year with provided 2229 and 2216 kg/ha with 37.71 and 36.62 percent increase in yield. The ranking of insecticides on the basis percent reduction over control after second spraying after 14 days for the management of aphids most effective were imidacloprid 17.8SL and thiametoxam25 WP and least effective spinosad 45 SC. Among biopesticides M.anisopoliae 1.15 WP was more effective than B.bassiana 1.15WP.Among the chemical insecticides imidacloprid 17.8 SL found safe followed by thiamethoxam 25WP with less number of percent reducing over control.
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Citation: Dwivedi, S. A. and Singh, R. S. 2019. Evaluation of the new molecular insecticides and biopesticides against mustard aphid Lipaphis erysimi (Kalt.) on yield parameter in mustard. Journal of Biopesticides, 12(2): 203-214.
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