1Department of Horticulture, Central University of Tamil Nadu, Thiruvarur-610005, India
Online published on 4 May, 2023.
Hydrogel is a cross-linked water-absorbing polymer that absorbs aqueous solutions by forming hydrogen bonds with the-water molecules. When agricultural hydrogels are exposed to water, they swell up significantly, gaining the name "water-retention granules”. It has received a lot of attention in the last 40 years for agricultural usage with the goal of improving plant water availability by improving the water-holding capacities of growth media. Since the majority of India is made up-of dry and semiarid regions, more effective water utilization is crucial for the cultivation of plants. One strategy to conserve-water is to use good management techniques in agriculture to keep the soil moist and maximize its capacity to hold water. Hydrogel made of super absorbent polymers (SAPs) may swell and absorb large amounts of liquid. The chemical-characteristics of the hydrogel, such as its molecular weight, determine its relative efficiency. The use of hydrogel in arid and semi-arid areas enhances soil characteristics, boosts soil water retention, increases irrigation efficiency, promotes-crop development, and increases water production. Additionally, it creates an environment that promotes higher root growth in well-drained soils, which eventually boosts productivity.
Hydrogel, SAPs, Cross-linked polymers, Water holding capacity, Soil conditioner