数字农科院2.0

A Facile Approach To Increasing The Foliage Retention Of Pesticides Based On Coating With A Tannic Acid/Fe3+ Complex

文献类型： 外文期刊

作者： Zhi, H; Yu, ML; Yao, JW; Sun, CJ; Cui, B; Zhao, X; Wang, Y; Cui, HX; Zeng, ZH

作者机构：

关键词： Sustained Release; Toxicity; Water Dispersible Granule; Photostability; Bioavailability

期刊名称： COATINGS

ISSN：

年卷期： 2020 年 10 卷 4 期

页码：

收录情况： JCR（2021版）

摘要： The effective utilization of many conventional pesticide formulations is less than 30%, which can increase the environmental impact of these substances. This degree of waste could be reduced by improving the adhesion of pesticides to foliage. In the present work, a complex comprising tannic acid (TA) and Fe3+ ions was used to encapsulate azoxystrobin and avermectin water dispersible granule (WDG) formulations (termed Az-WDG-TA and Av-WDG-TA) to improve adhesion. The treated pesticides exhibited improved photostability as well as sustained continuous release behavior. The retention proportions of the Az-WDG-TA and Av-WDG-TA on cucumber and lettuce foliage were improved by more than 50%. The ability of solutions of these materials to wet foliage was also enhanced after coating, such that the toxicity of Av-WDG-TA to aphids and the antifungal activity of Az-WDG-TA to Fusarium oxysporum were increased by nearly 50%. Given the low cost of TA and Fe3+ compounds and the simple synthesis process, this method represents a promising means of producing foliage-adhesive pesticide formulations with increased retention and bioavailability.

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