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Evaluation of New Insecticidal Combination of Pyridalyl with Synthetic Pyrethroid for the Management of Bollworm Complex on Cotton

机译:吡啶与合成拟除虫菊酯类新杀虫剂结合使用对棉铃虫复合体治理的评价

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摘要

The new combination of pyridalyl and synthetic pyrethroid was evaluated for the management of bollworm complex ie H. armigera, Earias spp. and P. gossypiella, for two Kharif seasons of 2006 and 2007 on Gossypium hirsutum variety, F 1378. There was significantly lower shedding of cotton bolls when pyridalyl @ 75 g ai ha~(-1) was used in combination with fenpropathrin and fenvalerate @ 100 g ai ha~(-1) each than in pyridalyl alone @ 75 g ai ha~(-1) with incidence of 8.0,8.2 and 8.6%, respectively. On the basis of bollworm incidence in pickable bolls, the incidence in pyridalyl + fenpropathrin varied from 9.6 to 14.9 and 5.1 to 6.5% in boll and loculi, respectively. The present study indicate that pyridalyl @ 75 g ai ha~(-1) in combination with fenpropathrin/fenvalerate @ 100 g ai ha~(-1) provide effective control of bollworm complex than in pyridalyl alone with significant increase in seed-cotton yield 20.71 and 20.38 q ha~(-1), respectively.
机译:评估了吡虫啉和合成拟除虫菊酯的新组合对棉铃虫复合体(棉铃虫,Earias spp)的管理。棉和棉分别在2006年和2007年的两个海里夫(F 1378)品种上发生。当吡ida基@ 75 g ai ha〜(-1)与fenpropathrin和fenvalerate @组合使用时,棉铃的脱落显着降低。与单独的吡咯烷醇相比,每100 g ai ha〜(-1)@ 75 g ai ha〜(-1)的发生率分别为8.0、8.2和8.6%。根据可摘棉铃中的棉铃虫发生率,棉铃虫和蝗虫中吡虫酰+苯丙酸菊酯的发生率分别为9.6%至14.9%和5.1%至6.5%。本研究表明,比起单独使用哒嗪,在75 g ai ha〜(-1)的吡咯菌酮与100 g ai ha〜(-1)的联苯丙酸/ fenvalerate组合可提供对棉铃虫复合物的有效控制,并显着提高种子棉产量分别为20.71和20.38 q ha〜(-1)。

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