Deposition and water repelling of temperature-responsive nanopesticides on leaves

Jie Tang, Xiaojing Tong, Yongjun Chen, Yue Wu, Zhiyuan Zheng, A. Basak Kayitmazer, Ayyaz Ahmad, Naveed Ramzan, Jintao Yang, Qingchun Huang and Yisheng Xu ()
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Jie Tang: East China University of Science and Technology
Xiaojing Tong: East China University of Science and Technology
Yongjun Chen: East China University of Science and Technology
Yue Wu: East China University of Science and Technology
Zhiyuan Zheng: East China University of Science and Technology
A. Basak Kayitmazer: Bogazici University
Ayyaz Ahmad: Muhammad Nawaz Sharif University of Engineering and Technology
Naveed Ramzan: University of Engineering & Technology
Jintao Yang: Zhejiang University of Technology
Qingchun Huang: East China University of Science and Technology
Yisheng Xu: East China University of Science and Technology

Nature Communications, 2023, vol. 14, issue 1, 1-15

Abstract: Abstract Pesticides are widely used to increase agricultural productivity, however, weak adhesion and deposition lead to low efficient utilization. Herein, we prepare a nanopesticide formulation (tebuconazole nanopesticides) which is leaf-adhesive, and water-dispersed via a rapid nanoparticle precipitation method, flash nanoprecipitation, using temperature-responsive copolymers poly-(2-(dimethylamino)ethylmethylacrylate)-b-poly(ε-caprolactone) as the carrier. Compared with commercial suspensions, the encapsulation by the polymer improves the deposition of TEB, and the contact angle on foliage is lowered by 40.0°. Due to the small size and strong van der Waals interactions, the anti-washing efficiency of TEB NPs is increased by 37% in contrast to commercial ones. Finally, the acute toxicity of TEB NPs to zebrafish shows a more than 25-fold reduction as compared to commercial formulation indicating good biocompatibility of the nanopesticides. This work is expected to enhance pesticide droplet deposition and adhesion, maximize the use of pesticides, tackling one of the application challenges of pesticides.

Date: 2023
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DOI: 10.1038/s41467-023-41878-3

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