Efficacy of some biointensive and insecticides based ipm modules against rice plant hopper in coastal Odisha Renuka V V L*, Sasmal Arundhati2, Beura Surjya Kanta1 Department of Entomology, College of Agriculture, Orissa University of Agriculture and Technology (OUAT), Bhubaneswar, 751003 1Department of Plant Pathology, College of Agriculture, Orissa University of Agriculture and Technology (OUAT), Bhubaneswar, 751003 2Regional Research and Technology and Transfer Station (Coastal Zone), OUAT, Bhubaneswar, 751003 *Email: vvlrenuka.14@gmail.com (corresponding author)
Online published on 21 July, 2020. Abstract A field experiment was conducted to determine the comparative efficacy of some biointensive and insecticides- based modules against rice plant hopper during kharif, 2016 and 2017. The biointensive modules included botanicals, parasitoids and entomopathogenic biopesticides. Chlorantraniliprole, buprofezin, and conventional insecticides as adopted by the farmers practice in Puri district of Odisha were the other treatments. The results revealed that nursery treatment with fipronil 0.3G @20kg/ha+ chlorantraniliprole 0.4G @10kg/ha at 40 DAT + spray of buprofezin 25%SC @825ml/ha at 65DAT were superior with 83% reduction in plant hoppers population. Also, the maximum grain yield with 31% increase, and incremental benefit cost ratio (5.85: 1.00) were accomplished. The module- nursery treatment with fipronil 0.3G @20kg/ha + Trichogramma japonicum + Beauveria bassiana @2l/ha at 30 and 50 DAT+ neem seed kernel extract (5%) at 65 DAT led to 65% reduction in plant hoppers, and was the most effective among the biointensive modules. The predator population was found to be more in these biointensive modules. Top Keywords Rice, brown plant hopper, neem seed kernel extract, Trichogramma japonicum, Beauveria bassiana, chlorantraniliprole, buprofezin, fipronil, predators, cost benefits. Top |