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Engineering of PVA/PVP Hydrogels for Agricultural Applications

Hydrogels have gained significant popularity in agricultural applications in terms of minimizing waste and mitigating the negative environmental impact of agrochemicals. This review specifically examines the utilization of environmentally friendly, shapable hydrogels composed of polyvinyl alcohol (P...

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Autores principales: Malka, Eyal, Margel, Shlomo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10671072/
https://www.ncbi.nlm.nih.gov/pubmed/37998985
http://dx.doi.org/10.3390/gels9110895
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author Malka, Eyal
Margel, Shlomo
author_facet Malka, Eyal
Margel, Shlomo
author_sort Malka, Eyal
collection PubMed
description Hydrogels have gained significant popularity in agricultural applications in terms of minimizing waste and mitigating the negative environmental impact of agrochemicals. This review specifically examines the utilization of environmentally friendly, shapable hydrogels composed of polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP) in various casings for crop protection against different pests, fertilizing, and watering. To activate their effectiveness, PVA/PVP hydrogels were loaded with both hydrophilic and hydrophobic environmentally friendly pesticides, namely hydrogen peroxide (HP), the essential oil thymol, and urea as a fertilizer, either separately or in combination. This review covers various physical and chemical approaches used for loading, shaping, and controlling the release profiles of pesticides and fertilizers. Additionally, it explores the evaluation of the chemical composition, structure, classification, rheology, and morphology of the hydrogels as well as their impact on the thermal stability of the encapsulated pesticides and fertilizer, followed by biological tests. These hydrogels significantly contribute to the stabilization and controlled release of essential nutrients and biocides for plants, while maintaining excellent biocidal and fertilizing properties as well as sustainability characteristics. By shedding light on the latest insights into the concepts, applications, and results of these hydrogels, this review demonstrates their immense potential for widespread future use in agriculture.
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spelling pubmed-106710722023-11-12 Engineering of PVA/PVP Hydrogels for Agricultural Applications Malka, Eyal Margel, Shlomo Gels Review Hydrogels have gained significant popularity in agricultural applications in terms of minimizing waste and mitigating the negative environmental impact of agrochemicals. This review specifically examines the utilization of environmentally friendly, shapable hydrogels composed of polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP) in various casings for crop protection against different pests, fertilizing, and watering. To activate their effectiveness, PVA/PVP hydrogels were loaded with both hydrophilic and hydrophobic environmentally friendly pesticides, namely hydrogen peroxide (HP), the essential oil thymol, and urea as a fertilizer, either separately or in combination. This review covers various physical and chemical approaches used for loading, shaping, and controlling the release profiles of pesticides and fertilizers. Additionally, it explores the evaluation of the chemical composition, structure, classification, rheology, and morphology of the hydrogels as well as their impact on the thermal stability of the encapsulated pesticides and fertilizer, followed by biological tests. These hydrogels significantly contribute to the stabilization and controlled release of essential nutrients and biocides for plants, while maintaining excellent biocidal and fertilizing properties as well as sustainability characteristics. By shedding light on the latest insights into the concepts, applications, and results of these hydrogels, this review demonstrates their immense potential for widespread future use in agriculture. MDPI 2023-11-12 /pmc/articles/PMC10671072/ /pubmed/37998985 http://dx.doi.org/10.3390/gels9110895 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Malka, Eyal
Margel, Shlomo
Engineering of PVA/PVP Hydrogels for Agricultural Applications
title Engineering of PVA/PVP Hydrogels for Agricultural Applications
title_full Engineering of PVA/PVP Hydrogels for Agricultural Applications
title_fullStr Engineering of PVA/PVP Hydrogels for Agricultural Applications
title_full_unstemmed Engineering of PVA/PVP Hydrogels for Agricultural Applications
title_short Engineering of PVA/PVP Hydrogels for Agricultural Applications
title_sort engineering of pva/pvp hydrogels for agricultural applications
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10671072/
https://www.ncbi.nlm.nih.gov/pubmed/37998985
http://dx.doi.org/10.3390/gels9110895
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