没有的白银子弹:北美快速农业杂草适应草甘的适应
Christopher Landau1, Kevin Bradley2, Erin Burns3
1Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL 61801, USA.
PNAS nexus
|December 7, 2023
概括
草甘除草的有效性由于杂草的适应性而下降. 结合出现前 (PRE) 除草剂和出现后 (POST) 草甘,可以保持控制,而不是单独使用POST草甘.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 杂草科学 杂草科学
背景情况:
- 草甘耐药作物的广泛采用简化了杂草管理,增加了对草甘的依赖.
- 降低草甘的有效性需要了解杂草适应趋势.
- 草甘彻底改变了全球农业,使其效率下降成为一个重大问题.
研究的目的:
- 在玉米和大豆中的关键杂草上量化草甘后出现 (POST) 疗效的变化.
- 评估前出现 (PRE) 除草剂之后的POST草甘是否与单独使用POST草甘相比提高了除草控制的有效性和一致性.
主要方法:
- 汇编了来自美国和加拿大的24个机构 (1996-2021) 的除草剂评估试验.
- 创建了两个子集:单独使用POST草甘和PRE除草剂,然后使用POST草甘.
- 美国9个州和加拿大1个省的7种杂草物种的回归平均值和控制评级的变异.
主要成果:
- 随着时间的推移,单独使用POST草甘的平均控制疗效显著下降.
- 在研究期间,仅使用POST草甘进行杂草控制的变异性增加了.
- 在标记PRE除草剂之前的草甘显示稳定的平均控制和随时间变化的低.
结论:
- 在农业学上重要的杂草物种迅速适应了草甘,降低了其独立的有效性.
- 结合PRE除草剂的综合杂草管理系统对于持续的草甘有效性至关重要.
- 多样化杂草管理策略对于减缓杂草适应和保持除草剂效用至关重要.
关键词:
玉米 (Zea mays) 是一个主要的农作物.草甘是一种草甘.抗除草剂耐药性 抗除草剂耐药性豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类 (Glycine max) 豆类杂草的适应 杂草的适应相关概念视频
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