The influence of crop type on pesticide wash-off parameters for use in environmental fate modelling.

IF 3.8 1区农林科学 Q1 AGRONOMY

Pest Management Science Pub Date : 2024-09-07 DOI:10.1002/ps.8389

Laurence Hand, David Patterson, Gerald Reinken, Carola Schriever, Petra Volz, Benjamin Rieder, Marius Essing

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引用次数: 0

Abstract

Background: Wash-off of plant protection products from crops is represented in current European Union (EU) surface water models and future EU soil models by a coefficient that estimates its contribution to soil loadings following rainfall. Replacing the default coefficient with experimental data requires a harmonized protocol and this research forms part of the development of such a protocol. Following a successful test of the proposed protocol on a single crop across eight laboratories, a range of crops were tested in a single laboratory to assess the impact of crop type on the results.

Results: Six crops (wheat, rice, oil seed rape, cabbage, potato and French bean) were chosen, encompassing both hydrophobic and hydrophilic leaf surfaces. Tebuconazole (Folicur EW 250) was sprayed onto plants at a rate equivalent to 100 g ai ha^-1 and subjected to a 1-h simulated rainfall event at an intensity of 20 mm h^-1. Measured residues before and after rainfall were compared to calculate the percentage wash-off. The extent of wash-off was 66.4% with a 95% confidence interval of ±18.5% and the results were clustered according to leaf wettability, with lower wash-off in hydrophobic crops than in hydrophilic crops.

Conclusion: Wash-off of this unoptimized formulation was similar across the crops, despite the use of crops with both hydrophobic and hydrophilic leaf surfaces. There is potential, therefore, to rationalize the number of crops used in future studies by selecting a small number of hydrophilic and/or hydrophobic crops to obtain a robust estimation of the extent of wash-off for use in environmental fate models. © 2024 Society of Chemical Industry.

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作物类型对用于环境归宿模拟的农药冲刷参数的影响。

背景：在目前的欧盟地表水模型和未来的欧盟土壤模型中，作物中植物保护产品的冲刷是通过一个系数来表示的，该系数用于估算其对降雨后土壤负荷的贡献。用实验数据取代默认系数需要一个统一的协议，而本研究正是开发此类协议的一部分。在对八个实验室的单一作物成功进行了拟议方案测试后，又在一个实验室对一系列作物进行了测试，以评估作物类型对结果的影响：结果：选择了六种作物（小麦、水稻、油菜、卷心菜、马铃薯和四季豆），包括疏水性和亲水性叶面。将戊唑醇（Folicur EW 250）以相当于 100 g ai ha-1 的剂量喷洒在植物上，并进行 1 小时强度为 20 mm h-1 的模拟降雨。比较降雨前后测量的残留量，计算冲刷百分比。洗脱率为 66.4%，95% 置信区间为 ±18.5%，结果根据叶片润湿性分组，疏水性作物的洗脱率低于亲水性作物：结论：尽管使用的作物叶片表面既疏水又亲水，但这种未优化配方对各种作物的冲洗效果相似。因此，在未来的研究中，有可能通过选择少量亲水性和/或疏水性作物来合理安排所用作物的数量，从而获得对冲刷程度的可靠估计，以用于环境归宿模型。© 2024 化学工业协会。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pest Management Science 农林科学-昆虫学

CiteScore

7.90

自引率

9.80%

发文量

553

审稿时长

4.8 months

期刊介绍： Pest Management Science is the international journal of research and development in crop protection and pest control. Since its launch in 1970, the journal has become the premier forum for papers on the discovery, application, and impact on the environment of products and strategies designed for pest management. Published for SCI by John Wiley & Sons Ltd.