EFFECTIVENESS OF BIORATIONAL INSECTICIDES FOR THE MANAGEMENT OF BRINJAL SHOOT AND FRUIT BORER, LEUCINODES ORBONALIS GUENEE AND ON YIELDLaishram Laishana Devi, Tushar M. Ghule, M.L Chatterjee and A.K. SenapatiAbstract Seven biorational insecticides viz., Bacillus thuringiensis, emamectin benzoate, chlorofenapyr, spinosad, Beauveria bassiana, neem and Verticillium lecani were evaluated in field condition against Leucinodes orbonalis (Guen.) during pre-kharif, 2012-13 at Instructional farm, Jaguli under faculty of Agriculture BCKV, with brinjal cv. Muktakeshi . Three foliar spray application of the chemicals were given at 15days interval. The results revealed that out of seven biorational insecticides, spinosad 50 gm a.i/ha gave the lowest (7.92- 11.01%) shoot infestation and (11.92-12.98%) fruit infestation over control .The overall healthy fruit yield of (168.70 q/ha 170.05 q/ha) recorded was significantly highest in spinosad 45 SC @50 gm a.i/ha treated plots on weight basis after each picking, compared to untreated control during both the seasons of field trail.
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