Progress and Innovations in Hydrogels for Sustainable Agriculture

The growing global demands for food security, efficient water use, and environmentally resilient agricultural strategies call for a sustainable agricultural revolution. Water scarcity, the excessive use of pesticides, and soil degradation are viewed as threats to food security. Hydrogels, three-dimensional hydrophilic polymer networks, appear to be revolutionary solutions for the future. Hydrogels have emerged as a promising solution for enhancing crop resilience, enhancing crop yields, and agribusiness productivity. The development and prospects of hydrogels bring about a revolution in sustainable agriculture by focusing on their unique properties, including excellent water absorption capacity, biodegradability, and controlled nutrient/agrochemical delivery. Hydrogels have the potential to transform traditional farming practices into novel crop varieties with improved traits like disease resistance, insect resistance, and drought resistance. Hydrogels enhance soil moisture retention, thereby facilitating seed germination and establishment. Thus, it has been demonstrated that hydrogel application has a significant impact on soil quality and resilience under challenging conditions. With this in mind, this review emphasizes that hydrogels are the way forward for sustainable agriculture, taking into consideration the economic benefits like reduced irrigation and increased crop yields while highlighting the need for regulatory considerations in terms of their safety, biodegradability, environmental impact, and long-term soil effects.