Cellulose nanocrystal-reinforced agar-based polysaccharide hydrogel for dual-barrier slow release of urea.
The rapid release of conventional urea fertilizers results in low nutrient utilization efficiency and environmental contamination, highlighting the need for sustainable controlled-release systems. Herein, an agar-based dual-barrier hydrogel fertilizer (ACCMPU) was developed by incorporating polydopamine-modified urea-l...