Lignin-Modified Electronegative Epoxy Resin Nanocarriers Effectively Deliver Pesticides against Plant Root-Knot Nematodes (Meloidogyne incognita)

It is highly desirable to fabricate a pesticide delivery system with excellent permeability to reduce the damage caused by root-knot nematodes in the soil. In this work, a novel electronegative pesticide nanocarrier was established by bonding anionic lignosulfonate with epoxy resin nanocarriers, whi...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2020-11, Vol.68 (47), p.13562-13572
Main Authors: Zhang, Da-xia, Liu, Guang, Jing, Tong-fang, Luo, Jian, Wei, Guang, Mu, Wei, Liu, Feng
Format: Article
Language:English
Subjects:
Agricultural and Environmental Chemistry
Animals
Epoxy Resins
Lignin
Lycopersicon esculentum
Pesticides
Plant Roots
Tylenchoidea
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Summary:It is highly desirable to fabricate a pesticide delivery system with excellent permeability to reduce the damage caused by root-knot nematodes in the soil. In this work, a novel electronegative pesticide nanocarrier was established by bonding anionic lignosulfonate with epoxy resin nanocarriers, which were loaded with abamectin (Aba). The results demonstrated that nanoparticles were negatively charged (−38.4 mV) spheres with an average size of 150 nm, and the encapsulation efficiency of nanocarriers for Aba was 93.4%. Polymer nanocarriers could prevent premature release of Aba and protect active ingredients from microbiological degradation. The adsorption strength of the soil to Aba loaded in nanocarriers was reduced by 6 to 10 times, so nanonematicides have remarkable soil mobility. Meanwhile, nanoparticles could easily penetrate the roots and nematodes. The application test confirmed that the control effect of this nanopesticide was 26–40% higher than that of the other agrochemicals. In consideration of its superior bioactivity and utilization rate, this pesticide delivery system has promising potential to control root-knot nematodes and improve the pesticide’s utilization efficiency.
ISSN:0021-8561
1520-5118
DOI:10.1021/acs.jafc.0c01736