Polymer additives regulate the deposition behavior of pesticide droplets on target plants

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Abstract

Pesticide formulation is usually combined with spraying additives to enhance the spraying effect in the actual field spraying. Polymer additives are new polymer materials developed in recent years and widely used in agriculture field. In this article, four different degrees of polymerization polymer additives (G101, G103, G100A and G200A) regulate the spray droplets of glyphosate herbicide on the target crop foliar deposition performance was studied. Through the study of equilibrium and dynamic surface tension, the dynamic contact angle of the droplet on the hydrophilic and hydrophobic leaves and the droplet impacting the target leaf surface at a high speed in a simulated field spraying process, the results showed that although glyphosate isopropylamine salt (Gly-IPA) with polymer additives can wet the target leaf surface, but only Gly-IPA adding G200A can deposited on the leaf surface during dynamic impact. This work opens up new prospects and provides a series of good evaluation methods for the study of polymer additives in regulating the deposition behavior of pesticide droplets on the target interface.

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