Wetting and deposition behaviors of pesticide droplets with different dilution ratios on wheat leaves infected by pathogens

文献类型： 外文期刊

第一作者： Song, Yuying

作者： Song, Yuying;Huang, Qiliang;Liu, Mingxin;Cao, Lidong;Li, Fengmin;Zhao, Pengyue;Cao, Chong

作者机构：

关键词： Pesticide solution; Conventional volume spray; Low volume spray; Dilution ratio; Wheat powdery mildew

期刊名称：JOURNAL OF MOLECULAR LIQUIDS （ 影响因子：6.0； 五年影响因子：5.6 ）

ISSN： 0167-7322

年卷期： 2023 年 370 卷

页码：

收录情况： SCI

摘要： The pesticide formulations should be diluted to different concentrations according to selected application methods. The structure and properties of crop leaf surfaces can undergo severe changes after infestation with pests or diseases. Previous studies have mostly focused on the interfacial behaviors of pesticide dro-plets on healthy plant leaves. Here, we prepared 25 % pyraclostrobin microemulsion and diluted it according to different dilution ratios corresponding to low volume and conventional volume spray meth-ods. The dynamic wetting and deposition behaviors of pesticide solution on wheat leaves infected with powdery mildew were investigated. The surface structure and properties of wheat leaves covered by the fungus Blumeria graminis will be changed. Conidia produce more non-polar components. The droplets with low dilution were more likely to deposit and reach the Wenzel state on wheat powdery mildew leaves. However, the droplets with high dilution were difficult to wet and easy to break and rebound from leaf surfaces. This research guides the control of wheat powdery mildew with pesticides under different application methods and the interface interaction between pesticide droplets and hydrophobic leaf sur-faces infected by pathogens.& COPY; 2022 Elsevier B.V. All rights reserved.

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