Efficacy of Neomcotinoids against Okra Insect Pests

摘要

A field experiment was conducted to evaluate the effectiveness of six treatments against the insect pests of okra. Studies revealed that all those treatments that have neo-nicotinoids viz. as seed treatment with imidacloprid (3.0 or 5.4 g ai kg~(-1) seed) or foliar spray of thiacloprid @ 20 g ai ha~(-1) or thiamethoxam @ 25 g ai ha~(-1) at 50 days of sowing were found effective in managing Amrasca biguttula biguttula population. The treatments with imidacloprid @ 3 g ai kg~(-1) followed by a foliar spray of λ-cyhalothrin @ 50 g ai ha~(-1)or β-cyfluthrin @ 18.75 g ai ha~(-1)at 50 days of sowing were the most effective treatments and gave only 2.2 and 3.2% infestations, respectively, against Earns vittella and incurred 320.1,370.8% increase in yield over control.