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首页> 外文期刊>Journal of entomology >Field Efficacy of Some Neonicotinoid Insecticides on Whitefly Bemicia tabaci (Homoptera: Aleyrodidae) and its Natural Enemies in Cucumber and Tomato Plants in Al-qassim Region, KSA
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Field Efficacy of Some Neonicotinoid Insecticides on Whitefly Bemicia tabaci (Homoptera: Aleyrodidae) and its Natural Enemies in Cucumber and Tomato Plants in Al-qassim Region, KSA

机译：KSA基地地区黄瓜和番茄植物中一些新烟碱类杀虫剂对烟粉虱（烟粉虱：粉虱）及其天敌的田间药效

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摘要

The effect of three successive treatments with the recommended concentrations of the neonicotinoid insecticides, acetamiprid, imidacloprid and thiamethoxam on immature stages and adults of the whitefly, Bemicia tabaci (Gennadius) was investigated. Insecticide applications were conducted against whitefly infesting summer and autumn plantations of cucumber Cucumis sativus L. and tomato Lycopersicum esculentum Mille. under field conditions in Onyyzah governorate, Qassim region, Saudi Arabia. Dead and living insect individuals were counted 3, 7 and 14 days after each treatment. Tested insecticides significantly suppressed the population of immature stages and adults of whitefly B. tabaci kving on plant leaves. Thiamethoxam showed the highest rates of efficiency against whitefly. It caused reduction in whitefly adult and immature stage populations attacking early summer cucumber by 87.5 and 82.4% after three sprays, respectively. In autumn plantations, acetamiprid, imidacloprid and thiamethoxam caused total reduction percentages in adults of B. tabaci of 67.3, 71.9 and 84.7%, respectively. The immature stages of the tested pest infesting autumn cucumber plants was reduced by 60.1, 72.8 and 82.1%, respectively. The tested insecticides variably affectedthe non target predatory insects where thiamethoxam was the most toxic compound and followed by imidacloprid and acetamiprid. Their harmful effect can be ranked from harmless to slightly harmful to predatory insects. Their side effect was significantly higher on Orius sp. and declined the populations oiPaederus a/fierii Koch, Coccinella undicempunctata (Reiche) and Chrysoperla carnea (Steph.).Therefore, the tested neonicotinoids could be considered promising candidates in controlling whitefly with a lower value of harmful effect on beneficial insect species.
机译：研究了使用推荐浓度的新烟碱类杀虫剂对乙酰氨基酚，吡虫啉和噻虫嗪连续三次处理对未成熟阶段和烟粉虱Bemicia tabaci（Gennadius）的成虫的影响。杀虫剂的施用针对黄瓜黄瓜和番茄番茄的粉虱侵染的夏秋季和秋季种植。在沙特阿拉伯Qassim地区Onyyzah省的野外条件下。每次处理后3、7和14天对死亡和活着的昆虫个体进行计数。经测试的杀虫剂能显着抑制未成熟阶段和粉虱在烟草叶片上成虫的成虫。噻虫嗪显示出最高的粉虱效率。经过三喷后，它使攻击初夏黄瓜的粉虱成虫和未成熟阶段种群分别减少了87.5％和82.4％。在秋季的人工林中，对乙酰氨基酚，吡虫啉和噻虫嗪造成的烟粉虱成虫总减少百分比分别为67.3、71.9和84.7％。试验的害虫侵染秋季黄瓜植株的未成熟期分别减少了60.1％，72.8％和82.1％。测试的杀虫剂对非目标掠食性昆虫有不同的影响，其中噻虫嗪是最有毒的化合物，其次是吡虫啉和乙酰胺。其有害作用可分为对捕食性昆虫无害到略有害。它们对Orius sp。的副作用明显更高。因此，被测试的新烟碱类化合物可以被认为是控制粉虱的有前途的候选物，对有害昆虫的有害作用价值较低。

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