author(s)
Priyanka, Patil SU, Shivanna BK, Nagarajappa Adivappar and Shashidhar KC

abstract
Investigation on Evaluation of insecticides against flower thrips Rhipiphorothrips cruentatus was carried out at Karnataka State Department of Horticulture, Shivamogga during 2017-2018 under open field conditions. For this study seven insecticides (acetamiprid 20 SP, imidacloprid 30.5 SC, thiamethoxam 25 WG, dinotefuran 20 SG, diafenthiuron 50 WP, chlorfenapyr 10 EC and dichlorvos 76 EC) including untreated control were tested for recording observation. Result showed that minimum thrips density was found in thiamethoxam 25 WG i.e., 3.19 per flower with maximum per cent reduction over untreated control i.e., 77.39% and it was found superior over other treatments. Thrips density in imidacloprid 30.5 SC was found on par with acetamiprid 20 SP with the population of 4.23 per flower. Chlorfenapyr 10 EC was found to be least effective in reducing thrips population (8.48/flower) and lowest per cent reduction over untreated control i.e., 39.97%.