Akruti Ben Rout* and D.K. Rana
Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh
Received-06.08.2021, Revised-15.09.2021, Accepted-26.09.2021
Abstract: The bioefficacy of three biopesticide namely, Beauveriabassiana, Metarhiziumanisopliae, Lecaniciliumlecanii and two botanicals namely, Neem seed kernel extract and Pongamia leaf extract along with Buprofezin @25% SC as check insecticide and one control treatment were evaluated on 1 month old plants of susceptible genotype State Unified Varietal Trial -4-11. After the 1st week of treatment, plants treated with Buprofezin showed significant reduction whereas there was a negligible reduction in nymph population of the plants that were treated with Metarhiziumanisopliae, Beauveriabassiana, Lecaniciliumlecanii , Neem seed kernel extract and Pongamia leaf extract. The 2nd and 3rd week onwards, the plants treated with NSKE registered reduction in nymphs which was at par with Buprofezin. Pongamialeaf extract also showed significant reduction than the three entomofungal bio pesticides. Out of the three entomofungalbiopesticides, Metarhiziumanisopliae was found to be more effective than Beauveriabassianaand Lecaniciliumlecanii . It was hence concluded that botanicals are better prospects for brown planthopper reduction than biopesticides (M. anisopliae ,B. bassiana and L. lecanii) which are only able to suppress the brown planthopper population by about 8-17%.
Keywords: Brown planthopper, Biopesticides, Rice
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