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Field studies were undertaken at Agricultural Research Farm, Darsi, Andhra Pradesh to study the comparative bio-efficacy of cow based (dung and urine) fermented organic products viz., neemastra, brahmastra and agniastra at 20% along with Neem Seed Kernel Extract (NSKE) 5 % against the major pests of castor and their safety to natural enemies during 2016-17. NSKE 5% recorded least no. of mean larval population of Achaea janata (1.06 plant-1 ) . |
