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首页> 外文期刊>Cotton Reseach Journal >Field and Laboratory Evaluation of Neem Based and Synthetic Insecticides for theManagement of Whitefly in Cotton
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Field and Laboratory Evaluation of Neem Based and Synthetic Insecticides for theManagement of Whitefly in Cotton

机译：印Ne和合成杀虫剂在棉花中控制粉虱的田间和实验室评价

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Whitefly is a key sucking pest of cotton as it affects the plant due to its feeding and as a vector of deadly cotton leaf curl virus disease. Laboratory and Field trials were carried out to compare the effect of commercial neem based products including neem seed kernel extract (NSKE 5%) with that of synthetic insecticide (Diafenthiuron 50WP, Triazophos and Flonicamid 50 WG) along with a control against Bemisia tabaci. Under laboratory conditions, the treatments were applied on cotton leaves whereas in field, treatments were applied 3 times as foliar sprays on cotton plants in a plot during the cotton growing season. Observations were recorded before one day and 24 and 72 hours after treatment in case of laboratory evaluation whereas under field conditions observations were recorded before one day and after 7 days after treatment. Under laboratory conditions, diafenthiuron, triazophos were recorded with highest whitefly mortality followed by Neemazal T/S 5.0% @ 1.0 ml /litre as well as Neemazal T/S1.0% @ 5.0 ml/litre, Indoneem and NSKE 5%. The data recorded under field conditions revealed diafenthiuron and triazophos as potential treatments in reduction of whitefly population but the neem based products especially neemazal also gave good control of whitefly under field conditions. As far as the non target effect of these insecticides is concerned the neem based insecticides were safer to the generalist predators and can be used during the earlier part of season and also used as an alternative tochemical insecticides during later part of cotton season.
机译：白粉虱是一种主要的棉花吸吮害虫，因为它会因饲喂而影响植物，并且是致命的棉叶卷曲病毒病的媒介。进行了实验室和现场试验，比较了包括印em种子仁提取物（NSKE 5％）和合成杀虫剂（Diafenthiuron 50WP，Triazophos和Flonicamid 50 WG）在内的以印ne为基础的商业产品的效果以及对烟粉虱的控制效果。在实验室条件下，将处理剂施用于棉花叶上，而在田间，在棉花生长季节中，以叶面喷雾剂的形式对棉株施以3次处理。在实验室评估的情况下，在治疗前一天以及治疗后24和72小时记录观察结果，而在野外条件下，在治疗后1天之前和7天之后记录观察结果。在实验室条件下，记录的地芬硫龙，三唑磷的粉虱死亡率最高，其次是Neemazal T / S 5.0％@ 1.0 ml / L，以及Neemazal T / S1.0％@ 5.0 ml / L，Indoneem和NSKE 5％。在田间条件下记录的数据表明，敌草硫隆和三唑磷是减少粉虱种群的潜在方法，但基于印度ne的产品，尤其是neemazal，在田间条件下也能很好地控制粉虱。就这些杀虫剂的非目标作用而言，以印em为基础的杀虫剂对普通捕食者更安全，可以在季节的早期使用，也可以在棉季的后期用作化学杀虫剂的替代品。

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