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Ricardo Fagundes Marques¹, Antonio Carlos Silva Junior¹, Francielly Rodrigues Gomes¹

¹Department of Plant Production, School of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal 14884-900, Brazil.

Plants (Basel, Switzerland)

|January 10, 2026

概括

缺水减少了除草剂对草 (Digitaria nuda) 的有效性. 在干旱压力下,草甘控制效率较低,特别是在晚期生长阶段,影响杂草管理策略.

科学领域:

农业科学农业科学
植物生理学植物生理学
杂草科学杂草科学

背景情况:

缺水压力可以通过改变植物生理学来显著降低除草剂的有效性.
在水应激下,皮层水分减少,可能会限制除草剂的透.
在遇到干旱条件的杂草中,草甘的有效性可能会受到损害.

研究的目的:

评估缺水和现象阶段对草甘对控制草 (Digitaria nuda) 的疗效的影响.
确定不同土壤水的潜力如何影响在各种生长阶段对草的除草剂控制.

主要方法:

使用了一个完全随机的设计,具有3x3x2的因数排列.
处理包括三种土壤水潜力 (-0.03, -0.07, -1.5 MPa),三种草甘剂量 (0,50,100%标签率) 和两个现象学阶段 (4-6 叶,1-3 ).
评估的参数包括特定的叶片面积,口腔导电性,叶片温度差异和芽/根干物质.

主要成果:

增加的水限制导致了草在所有现象阶段的形态生理成分的减少.
草的4-6叶阶段显示,无论除草剂量如何,草甘的控制减少了.
缺水严重降低了草甘在控制草的整体效率在两个评估的发展阶段.

结论:

缺水条件大大降低了草甘对控制草的有效性.
草的现象学阶段会影响其在水应激下对草甘的敏感性.
综合杂草管理策略应考虑土壤水分水平和植物生长阶段,以有效地应用除草剂.

关键词:

数字裸体的数字裸体这是一种除草剂除草剂.一个单片的子.水资源短缺问题缺水问题这是一棵杂草.

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