Summary
This narrative review examines the potential of hydrogel soil amendments to enhance plant resilience to water stress by improving water retention and availability in the root zone. The authors assess mechanisms by which hydrogels function in water-limited environments and synthesise evidence on their efficacy across plant species and growing conditions. The review likely concludes that hydrogels offer a viable agronomic tool for drought mitigation, though effectiveness varies with hydrogel type, soil properties, and climatic context.
UK applicability
Given projected increases in summer water scarcity and drought frequency in the UK, hydrogel soil amendments may offer practical value in horticulture and intensive arable systems, particularly in water-stressed regions. However, UK-specific field trials under temperate conditions and cost-benefit analyses would be needed to guide adoption in commercial practice.
Key measures
Soil water-holding capacity, plant water status, drought stress indices, crop yield under water-limited conditions, hydrogel application rates and effects on plant biomass and growth parameters
Outcomes reported
The review synthesised evidence on how hydrogel soil amendments enhance plant water retention and drought tolerance across agricultural and horticultural systems. It evaluated mechanisms of hydrogel performance in water stress mitigation and plant resilience under deficit irrigation conditions.
Topic tags
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