Evaluation of Biorational Insecticides Against Pigeonpea Pod Borer

Abstract

A field study was carried out to evaluate the efficacy of biorational insecticides against pigeonpea pod borer Maruca vitrata (F.) at the Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh during kharif, 2016 and 2017. From the cumulative mean data, it was found that among the ten biorationals evaluated, spinosad 45SC @ 0.4 ml/ l led to the maximum % larval incidence reduction (90.32 and 93.61% during 2016 and 2017, respectively) and also led to maximum reduction in % pod infestation (65.31 and 65.29%) with maximum % increase in yield (77.63 and 77.37%). This treatment also gave a C:B ratio of 1:3.36 and 1:3.74. Comparably, the next best was emamectin benzoate 5SG @ 0.3 g/ l, with 86.93 and 90.89% reduction in larval incidence and 62.52 and 62.63% reduction in pod infestation, with 76.38 and 75.49% increase in yield with a C:B ratio of 1:9.80 and 1:10.34.