Vol. 2, Issue 3 (2017)
Evaluation of bio agents against Thrips population on RCH-134 Bt (BG-II)
Author(s): Sudha Summarwar, Deepali Lall
Abstract: The present investigation was conducted to evaluate of bio agents against Thrips population on RCH-134 Bt (BG-II). The experiment involved 8 treatments including control. The treatments consist of NSKE 5% (Neem Seed Kernal Extract), Neem Oil + liquid soap, Pest guard 5%, Fusarium SP, Verticillium lecanii, Beauveria bassiana, Buprofenzin I.G.R. (Insect Growth Regulator) and Control. Total three sprays of each bioagent were given at 7-10 days’ interval to protect the Bt cotton against sucking pests. In the result, it was found that maximum reduction in thrips population was recorded in the treatment of Neem oil + liquid soap (47.17%) which was at par with the treatment of NSKE 5% (42.53%) and Pest guard 5% (39.82%). These three treatments were superior to rest of the treatments. The treatment of Verticillium lecanii (25.53%) formed the next best treatment to reduce Thrips population, which was at par with the treatment of Fusarium SP (23.90%). Rest of the treatments were observed to be inferior to all mentioned treatments.