Studies on bio-efficacy of flubendiamide 90% + deltamethrin 60% w/v against the fruit borer Earias vitella infesting Okra and its effect on natural enemies

Abstract

An experiment was conducted at ‘C’ unit Farm, BCKV, Kalyani, West Bengal on okra to study the Bio-efficacy of Flubendiamide 90% + Deltamethrin 60% w/v against the Fruit Borer and its effect on naural enemies during the pre kharif season of 2017 & 2018. Three doses of Flubendiamide 90% + Deltamethrin 60% SC @ 250, 300 and 400 ml/ha along with some other insecticides were sprayed to work out their efficacy against this menace of okra. The effect of various doses of Flubendiamide 90% + Deltamethrin 60% SC along with other chemical treatments on natural enemies was also studied. The study revealed that Flubendiamide 90% + Deltamethrin 60% SC @ 400 ml/ha was the most effective for controlling fruit borer and recorded the highest yield during both year. The application of Flubendiamide 90% + Deltamethrin 60% SC has no adverse effects on natural enemies. Hence could be suggested to control its infestation in okra crop.