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预先出现的除草剂和杀虫剂之间的相互作用对大豆生长和虫种群的相互作用

João Guilherme Queiroz Bordignon¹, Pedro Delefrate Neto², Hércules Diniz Campos¹

¹Universidade de Rio Verde, Rio Verde 75901-970, Brazil.

|December 22, 2025

概括

豆类杀虫剂和除草剂混合物可以影响线虫控制和植物生长. 一些组合会损害有益的微生物,这凸显了综合性害虫防治中需要仔细选择产品的必要性.

科学领域:

农业科学农业科学
植物病理学植物病理学
杂草科学杂草科学

背景情况:

线虫和杂草的压力越来越大,需要在大豆生产中联合使用线虫杀虫剂和除草剂.
这些联合应用的农业化学品之间的相互作用尚不清楚,可能导致意想不到的后果.
同时应用可能会对害虫控制和作物发展产生添加剂,协同作用或对抗作用.

研究的目的:

调查大豆中尼马杀虫剂和出现前除草剂之间的相互作用.
评估对 *Pratylenchus brachyurus* 种群和大豆最初发展的影响.
为了评估对杀虫剂 *Bacillus amyloliquefaciens* BV03.03 疗效的影响.

主要方法:

进行了三次独立的实地实验,每个实验都采用了不同的杀虫剂治疗,重复两次.
一项温室研究使用了2 × 5 + 2因数设计,测试了对五种预出现除草剂的纳马杀虫剂存在/不存在.
评估大豆植物和线虫种群密度的生物识别变量.

主要成果:

这种除草剂混合物[flumioxazin + imazethapyr]增加了线虫种群.
[弗鲁米奥克萨辛+S-甲基]和[福米沙芬+S-甲基]减少了线虫种群和改善了大豆根生物量.
[flumioxazin + imazethapyr]混合物对*Bacillus amyloliquefaciens* BV03的疗效产生了负面影响,而[flumioxazin + pyroxasulfone]则根据应用方法表现出对抗作用.

结论:

除草剂-杀虫剂的相互作用有所不同,有些组合对线虫控制和有益微生物有害.
一些除草剂独立减少了线虫种群,而其他除草剂则表现出与线虫杀虫剂的添加效应.
谨慎的产品选择对于综合性害虫防治至关重要,考虑到对土壤健康和大豆发展的综合影响.

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