An Overview of Polymeric Hydrogel Applications for Sustainable Agriculture

Vedovello, Priscila; Sanches, Lívia Valentim; da Silva Teodoro, Gabriel; Majaron, Vinícius Ferraz; Bortoletto-Santos, Ricardo; Ribeiro, Caue; Putti, Fernando Ferrari

doi:10.3390/agriculture14060840

Cited by 2 publications

(1 citation statement)

References 120 publications

(168 reference statements)

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“…The method of free radical polymerization in which monomers with initiators are suspended in water in the form of droplets is called suspension polymerization. 79 In inverse suspension polymerization, watersoluble monomers and initiators are uniformly dispersed in the oil phase in the form of small droplets. 80 In this way, the polymerization process is stable, and the product is a granular hydrogel.…”

Section: Suspension Polymerizationmentioning

confidence: 99%

Rational Design of a Multifunctional Hydrogel Trap for Water and Fertilizer Capture: A Review

Wu,

Sheng,

et al. 2024

J. Agric. Food Chem.

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Water scarcity and land infertility pose significant challenges to agricultural development, particularly in arid and semiarid regions. Improving soil-water-retention capacity and fertilizer utilization efficiency through the application of soil additives has become a pivotal approach in agricultural practices. Hydrogels exhibit exceptional water absorption and fertilizer retention capabilities, making them extensively utilized in the fields of agriculture, forestry, and desert control. Currently, most reviews primarily focus on the raw materials, classification, synthesis methods, and application prospects of hydrogels, with limited attention given to strategies for enhancing water-retention performance, mechanisms underlying fertilizer absorption, and environmental risks. This review covers the commonly used cross-linking methods in hydrogel synthesis and the structure−activity relationship between hydrogels and water as well as fertilizer. Additionally, a thorough analysis of the ecological benefits and risks associated with hydrogels is presented. Finally, future prospects and challenges are delineated from the perspectives of material design and engineering applications.

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Section: Suspension Polymerizationmentioning

confidence: 99%

Rational Design of a Multifunctional Hydrogel Trap for Water and Fertilizer Capture: A Review

Wu,

Sheng,

et al. 2024

J. Agric. Food Chem.

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Influence of Biochar-Reinforced Hydrogel Composites on Growth and Biochemical Parameters of Bean Plants and Soil Microbial Activities under Different Moisture Conditions

García-Gómez,

Uysal,

Doğaroğlu

et al. 2024

Agriculture

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Hydrogels have shown promise in improving soil quality and alleviating plant drought stress. This study investigated the effectiveness of four hydrogel composites composed of polyvinyl alcohol, sodium alginate, and pine or olive tree biochar in improving bean (Phaseolus vulgaris) plant growth and soil microbial activities. The experiment was conducted in natural soil, where biochar–hydrogel composites were applied at a concentration of 0.75% hydrogel per soil weight (w/w) for 35 days under two different moisture conditions: adequate moisture (70% of water holding capacity (WHC)) and drought stress (40% WHC). The results showed variation between hydrogel composites and, more importantly, between water regimes. Under water deficit conditions, biochar–hydrogel composites consistently caused a decrease in plant weight and in chlorophyll (CHL) CHLa/CHLb ratio. Furthermore, antioxidant enzyme activities and malondialdehyde and protein levels generally increased in contrast to the observations at 70% WHC. Regarding microbial activities, the composites reduced soil respiration (12–38%) while promoting phosphatase activity (42–65%) under both moisture regimes. Overall, the introduction of hydrogel composites did not show consistently positive effects on either plants or soil microorganisms. To thoroughly evaluate the efficacy of these hydrogels as soil amendments, further studies are needed, considering different soil types, plant species, and hydrogel application rates.

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An Overview of Polymeric Hydrogel Applications for Sustainable Agriculture

Cited by 2 publications

References 120 publications

Rational Design of a Multifunctional Hydrogel Trap for Water and Fertilizer Capture: A Review

Rational Design of a Multifunctional Hydrogel Trap for Water and Fertilizer Capture: A Review

Influence of Biochar-Reinforced Hydrogel Composites on Growth and Biochemical Parameters of Bean Plants and Soil Microbial Activities under Different Moisture Conditions

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