吡蚜酮:对有益节肢动物的选择性光谱及害虫综合治理的适合度

B. Sechser, B. Reber, F. Bourgeois
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引用次数: 61

摘要

吡虫胺是一种新型杀虫剂,是第一种也是唯一一种来自亚甲基吡啶类的物质。其活动范围包括蚜虫、白蝇和飞虱等吸吮性害虫。在实验室和实地条件下进行了试验,以评估其对有益节肢动物的影响。实验结果表明,该制剂对鞘翅目、异翅目、神经翅目和黄斑螨具有完全的选择性。在埃及和美国的棉花上以250/200克a.i./公顷的剂量单次施用后,在三周的时间内对捕食者进行定期抽样,发现吡蚜酮和未经处理的对照地的种群发展情况相似。在埃及的蔬菜作物秋葵上,以100克/公顷的剂量喷施2次,对棉蚜种群进行了抑制,观察期为23天。这也让掠食者得以生存。这些积极的特点使吡蚜酮成为一种理想的成分,在需要控制吸虫和天敌作为补充控制工具发挥重要作用的情况下。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pymetrozine: Selectivity spectrum to beneficial arthropods and fitness for integrated pest management

Pymetrozine is the first and only substance from the group of azomethine pyridines, a novel class of insecticides. The spectrum of activity covers sucking pests such as aphids, whiteflies and planthoppers. Tests were carried out in the laboratory and under field conditions to evaluate its impact on beneficial arthropods. In laboratory tests it demonstrated full selectivity against predaceous Coleoptera, Heteroptera, Neuroptera and the predatory mite Typhlodromus pyri.Following a single application at 250/200 g a.i./ha on cotton in Egypt and in the USA, the regular sampling of predators over a period of three weeks revealed a similar population development in the pymetrozine and the untreated control plots. On okra, a vegetable crop in Egypt, it suppressed populations of Aphis gossypii with two sprays at 100 g a.i./ha for the whole observation period of 23 days. It also allowed the survival of predators. These positive features make pymetrozine an ideal component in situations where sucking pests have to be controlled and natural enemies can play a substantial role as complementary control tools.

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