Effect of insecticidal modules against jassid and shoot and fruit borer in okra

A field experiment was conducted from 2005 to 2007 to evaluate different insecticidal modules against major pests viz. Amrasca biguttula biguttula (Ishida) and fruit borer, Earias spp. (Boisd) in okra. Each test module comprised three sprays with different combinations of insecticides at fortnightly interval commencing from pest appearance after sowing. All the modules were found significantly superior over untreated check. The lowest fruit damage (13.08%) and maximum fruit yield (80.72 q/ha) with maximum net return (Rs. 40070/-) were recorded in module-1 comprising imidacloprid 100 ml/ha, acephate 1000g/ha and indoxacarb 500ml/ha, which was comparable with module-2 (Three sprays of acephate 1000g/ha) with regards to fruit damage and yield. However, module-3 consisting of two sprays of imidacloprid 100 ml/ha and one spray of endosulfan 1250 ml/ha gave maximum protection against jassid (83.05%), which was at par with module-I. Module 3 failed to provide protection against fruit borer and gave significantly lower fruit yields and economic returns as compared to module 1.