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Bioefficacy of Promising Insecticides Against Sucking Pests in Bt Cotton

机译：有前途的杀虫剂对Bt棉害虫的生物功效

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A field experiment was conducted at experimental Farm of Department of Entomology, Marathwada Agricultural University, Parbhani (M.S.), India during Kharif 7010, to study the bioefficacy of promising insecticides against sucking pests in Bt cotton andits effects on seed cotton yield. The experimental findings showed that clothianidin 50 WDG @ 250 g / ha alternate with acephate 75 SP 500 g / ha was most effective in reducing aphid, jassid and whitefly population on 3rd, 7lh and 14,h day after 1st and2nd spraying. However it was on par with acetamiprid 20 SP @ 100 g / ha alternate with acephate 75 SP @ 500 g / ha and thiamethoxam 25 WG @ 250 g / ha alternate with acephate 75 SP @ 500g / ha. Where as the treatment fipronil 5 % SC @ 1000 ml / ha alternate with acephate 75 SP @ 500g / ha was found most superior in reducing thrips population on 3rd, 7th and 14lh day after lsl and 2nd spraying and it was on par with acetamiprid 20 SP @ 100 g / ha alternate with acephate 75 SP @ 500 g / ha and clothianidin 50 WDG @ 250 g / ha alternate with acephate 75 SP @ 500 g / ha. The maximum seed cotton yield was recorded in clothianidin 50 WDG @ 250 g / ha alternate with acephate 75 SP @ 500g / ha (2560 kg / ha) followed by acetamiprid 20 SP @ 100 g / ha alternate with acephate 75 SP @ 500 g / ha (2500 kg / ha), thiamethoxam 25 % WG @ 250 g / ha alternate with acephate 75 SP @ 500 g / ha (2472 kg / ha) and fipronil 5 % SC @ 1000 ml / ha alternate with acephate 75 SP @ 500 g / ha (2428 kg / ha). Our results suggest that clothianidin and acetamiprid are good substitutes for conventional insecticides in vogue, which could be used in formulating a successful management strategy for sucking pests in Bt cotton.
机译：在Kharif 7010期间，印度马拉巴瓦尼农业大学昆虫学系实验农场进行了田间试验，以研究有前景的杀虫剂对Bt棉花中有害生物的吸吮性及其对籽棉产量的影响。实验结果表明，在第一次和第二次喷洒后的第3、7lh和14h，可比尼丁50 WDG @ 250 g / ha与乙酰甲草胺75 SP 500 g / ha交替使用最有效地减少了蚜虫，Jassid和粉虱的种群。然而，它与乙酰氨基磺酸20 SP @ 100 g / ha，乙酰甲胺75 SP @ 500 g / ha和噻虫嗪25 WG @ 250 g / ha，乙酰甲胺75 SP @ 500 g / ha处于同等水平。在进行lsl和第2次喷洒后的第3、7和14lh，发现氟虫腈5％SC @ 1000 ml / ha与乙酰甲胺75 SP @ 500g / ha交替使用对减少蓟马种群最有利，与乙酰胺20相当。 SP @ 100 g / ha与乙酰甲胺75 SP @ 500 g / ha交替使用可比丁50 WDG @ 250 g / ha与乙草胺75 SP @ 500 g / ha交替使用。记录在籽粒中的最大棉籽产量为：可比丁50 WDG @ 250 g / ha，交替使用乙酰甲草胺75 SP @ 500g / ha（2560 kg / ha），接着是胺20 SP @ 100 g / ha，交替使用乙酰甲胺75 SP @ 500 g / ha公顷（2500公斤/公顷），噻虫嗪25％WG @ 250克/公顷，乙酰甲胺75 SP @ 500克/公顷（2472千克/公顷）和氟虫腈5％SC @ 1000毫升/公顷，乙酰丙酮75 SP @ 500替代克/公顷（2428公斤/公顷）。我们的结果表明，噻虫胺和对乙酰氨基酚是目前流行的传统杀虫剂的良好替代品，可用于制定成功的Bt棉花吸害虫管理策略。

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