author(s)
Sandeep Kumar Sathua, MS Sai Reddy, Arjun Sulagitti and RN Singh

abstract
Bio-efficacy of four different insecticides (namely acephate, imidacloprid, cypermethrin, dimethoate) and three botanicals [namely Allium sativum extract, Allium cepa extract and NSKE] were investigated against chilli thrips. Among insecticides, imidacloprid 17.8 SL reduced maximum thrips population (82.46%) followed by acephate 75 SP (80.86%). Among botanicals, NSKE 5% caused maximum mortality of 64.50%, while garlic and onion extract showed comparatively less performance with 55.98% and 51.53% respectively. Among all treatments, the highest percent increase in yield over control was obtained from plots treated with imidacloprid 17.8 SL (45.42%) followed by cypermethrin 12.5 EC (38.15%). Amongst botanicals, greater percent increase in the yield was recorded by application of A. sativum extract (34.46%), followed by A. cepa extract (22.33%). The C: B ratio for all treatments was analyzed and found to be highest in case of imidacloprid 17.8 SL (1:16.66) whereas the lowest in case of dimethoate 0.03 EC (1:7.39).