Application of Nanomaterials in Pesticides: Pesticide Controlled Release Formulations

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Agricultural Biosystem and Biological Engineering".

Deadline for manuscript submissions: 25 April 2024 | Viewed by 5292

Special Issue Editors


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Guest Editor
College of Plant Protection, Southwest University, Chongqing 400716, China
Interests: development and application of nano pesticide formulations
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
College of Plant Protection, Yangzhou University, Yangzhou 225009, China
Interests: development and application of pesticide nano-formulations; the relationship between structure and function of agricultural surfactants
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The role of nanomaterials and technologies in agriculture, especially crop protection, is immeasurable. Nano-sized pesticides can not only improve the control effect of pesticides on pests, but also reduce the frequency and usage of pesticides. The purpose of this Special Issue is to focus on the preparation, characterization and application of nanoscale pesticides in the control of agricultural pests, and to provide new ideas for the sustainable development of agriculture. This Special Issue focuses on the following topics: (1) nanomaterials and technologies for pesticide controlled release; (2) nanoemulsions or microemulsions used for pesticide delivery. Potential topics include, but are not limited to, the above; please enquire about other related topics before submitting a manuscript. In this Special Issue, original research articles and reviews are welcome. We look forward to receiving your contributions.

Prof. Dr. Kun Qian
Dr. Jianguo Feng
Guest Editors

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Keywords

  • nanomaterials
  • controlled release
  • pesticide
  • safety evaluation

Published Papers (3 papers)

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Research

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16 pages, 4234 KiB  
Article
Biodegradable Carboxymethyl Chitosan/Polyvinyl Alcohol Hymexazol-Loaded Mulch Film for Soybean Root Rot Control
by Ze Lv, Xiaohan Meng, Shaoyang Sun, Tianzhen Jiang, Shengfu Zhang and Jianguo Feng
Agronomy 2023, 13(9), 2205; https://doi.org/10.3390/agronomy13092205 - 24 Aug 2023
Viewed by 1082
Abstract
Soybean root rot is an important disease that has affected soybean crops in recent years, but the available control methods still do not provide good protection for soybeans. In this study, three biodegradable mulch films (HML@CMCS, HML@PVA, HML@CMCS/PVA) were prepared from carboxymethyl chitosan [...] Read more.
Soybean root rot is an important disease that has affected soybean crops in recent years, but the available control methods still do not provide good protection for soybeans. In this study, three biodegradable mulch films (HML@CMCS, HML@PVA, HML@CMCS/PVA) were prepared from carboxymethyl chitosan (CMCS) and polyvinyl alcohol (PVA), and hymexazol (HML) was loaded on them. The surface and cryofractured surface were compared via micromorphological observations using SEM, AFM, and 3D measurements. Mechanical, water barrier, and optical properties were compared between the different films, and the results showed that the composite film (HML@CMCS/PVA) had better tensile properties, lower water content (35%), and lower water solubility (28%), while water barrier properties were significantly improved. HML@CMCS/PVA also had better light transmission than commercial films (opacity at 600 nm of 1.92). Finally, the composite film was selected to study antifungal properties, soil degradability, and biosafety. The results showed that it exhibited significant inhibitory activity against Fusarium oxysporum and could effectively control soybean root rot, while degradation reached 58% after 7 d of soil burial, and the mortality of earthworms relative to the microplastics produced by the film within 7 d (23.33%) was much lower than that of the commercial film, demonstrating its excellent biosafety. This study provides a new approach for the on-farm management of soybean root rot and the reduction in soil microplastic pollution. Full article
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16 pages, 3865 KiB  
Article
Formulation of Matrine Oil-Based Suspension Concentrate for Improving the Wetting of Droplets and Spraying Performance
by Meng Li, Zhen Wang, Huanwen Meng, Baozhu Dong, Xile Deng and Hongyou Zhou
Agronomy 2023, 13(7), 1895; https://doi.org/10.3390/agronomy13071895 - 18 Jul 2023
Cited by 2 | Viewed by 1591
Abstract
Matrine is an efficient, low-toxicity, and environmentally friendly botanical pesticide; however, it is mainly applied as a soluble concentrate (SL) with a limited utilization rate that is unsuitable for ultra-low-volume spraying and unmanned aerial vehicles. Therefore, a matrine formulation (such as an oil-based [...] Read more.
Matrine is an efficient, low-toxicity, and environmentally friendly botanical pesticide; however, it is mainly applied as a soluble concentrate (SL) with a limited utilization rate that is unsuitable for ultra-low-volume spraying and unmanned aerial vehicles. Therefore, a matrine formulation (such as an oil-based suspension concentrate, OD) is more effective. In this study, matrine ODs were prepared with three kinds of emulsifiers (VO/02N, VO/03, and VO/01). The storage stability, suspensibility, viscosity, surface tension, contact angle, droplet density, fraction of coverage, maximum retention, indoor control, effect of adhesion tension, and adhesion work of matrine ODs were studied. All three types of matrine ODs had favorable stability, and the wetting and spraying performance of the matrine ODs were more effective than those of the matrine SLs. Among the three types of matrine ODs, the viscosity, wettability, spray performance, and maximum retention of the suspension made with emulsifier VO/03 were superior to those of the other two emulsifiers, and they were more effective in controlling Spodoptera frugiperda. Increasing the solution concentration improved the spreading velocity of the droplets on the solid surface and the wettability. The matrine OD prepared from emulsifier VO/03 had the most effective wettability and spraying properties, and it can be used for ultra-low-volume spraying and aerial application. This study offers new insights into the efficient use of plant-based pesticides. Full article
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Review

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24 pages, 1596 KiB  
Review
Synthesis of Zinc Oxide Nanoparticles and Their Applications in Enhancing Plant Stress Resistance: A Review
by Zijun Wang, Sijin Wang, Tingting Ma, You Liang, Zhongyang Huo and Fengping Yang
Agronomy 2023, 13(12), 3060; https://doi.org/10.3390/agronomy13123060 - 14 Dec 2023
Cited by 2 | Viewed by 1884
Abstract
Biotic and abiotic stress factors are pivotal considerations in agriculture due to their potential to cause crop losses, food insecurity, and economic repercussions. Zinc oxide nanoparticles (ZnO nanoparticles) have gained substantial attention from researchers worldwide for their capacity to alleviate the detrimental impacts [...] Read more.
Biotic and abiotic stress factors are pivotal considerations in agriculture due to their potential to cause crop losses, food insecurity, and economic repercussions. Zinc oxide nanoparticles (ZnO nanoparticles) have gained substantial attention from researchers worldwide for their capacity to alleviate the detrimental impacts of both biotic and abiotic stress on plants, concurrently reducing dependence on environmentally harmful chemicals. This article provides an overview of methods for synthesizing ZnO nanoparticles, encompassing physical vapor deposition, ball milling, hydrothermal methods, solvothermal methods, precipitation methods, microwave methods, microbial synthesis, and plant-mediated synthesis. Additionally, it delves into the absorption, translocation, and biotransformation pathways of ZnO nanoparticles within plants. The emphasis lies in elucidating the potential of ZnO nanoparticles to safeguard plants against biotic and abiotic stress, enhance plant performance, and modulate various plant processes. The article also offers a preliminary exploration of the mechanisms underlying plant stress tolerance mediated by ZnO nanoparticles. In conclusion, ZnO nanoparticles present an environmentally friendly and cost-effective strategy for plant stress management, paving the way for the integration of nanotechnology in sustainable agriculture. This opens new possibilities for leveraging nanotechnology to bolster plant resilience against stress in the ever-changing climate conditions, ensuring global food security. Full article
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