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Montmorillonite-reinforced alginate/polyacrylamide semi-IPN hydrogel fertilizers engineered with betaine for enhanced crop resilience under cold and drought stress.
PubMed · 2026-05-27
Scientists engineered a smart hydrogel fertilizer containing clay, a plant-protective compound (betaine), and biodegradable polymers that releases nutrients in response to soil temperature and pH — dramatically improving crop survival under drought and freezing conditions.
1
Available phosphorus in treated soil increased by over 271% and ammonium nitrogen by nearly 9-fold compared to controls.
2
Plants grown with the hydrogel showed a 98.89% increase in fresh weight under combined drought and cold stress.
3
The material maintains structural flexibility and function at temperatures as low as -25°C, enabling year-round soil moisture retention.
