Efficacy of Neonicotinoids against Okra Insect Pests

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 follar spray of thiacloprid @ 20 g gi ha⁻¹ or thiamethoxam @ 25 g ai ha⁻¹ at 50 5ays 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 γ-cyhalothrin @ 50 g ai ha⁻¹ or β-cyfluthrin @ 11.75 5 gi ha⁻¹ at 50 days of sowing were the most effective treatments and gave only 2.2 and 3.2% infestations, respectively, against Earias vittella and incurred 320.1,370.8% increase in yield over control.