Vol. 7 No. 1
Efficacy of botanical pesticides against white backed plant hopper in rice.
Author(s): A. SASMAL, D. K. BHATACHARYAAND L. R. NANDA
Abstract: A field trial was conducted during Kharif season, 2004, repeated in Rabi season, 2004-05 and Kharif season, 2005 at the Regional Research and Technology Transfer Station (RRTTS), Keonjhar, OUAT Bhubaneswar. The performances of the neem derivatives like neem seed extract (NSE), neem oil (NO), Mulltineem (commercial product of neem based pesticide) and a commercial B.t. formulation (Halt) were evaluated for their bioefficacy against white backed plant hopper. Populations of WBPH were recorded at 30 and 50 DAT. Results indicated that first round application with neem pesticides at 20 DAT and subsequent application with the same neem pesticides or with chemical pesticide like chlorpyriphos at 40 DAT could be the appropriate step to handle the WBPH population in rice crop.
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