Pusa Hydrogel, developed by Indian Agricultural Research institute, New Delhi are meant to
Absorb and retain water just like a sponge and release it in dry spell
A hydrogel is a network of polymer chains that are hydrophilic. Hydrogels are highly absorbent (they can contain over 90% water) natural or synthetic polymeric networks. Hydrogels also possess a degree of flexibility very similar to natural tissue, due to their significant water content.
During irrigation, the Hydrogel will absorb and retain water just like a sponge, 350 times its dry weight.
During dry period, it releases the water for plants. Thus, gel reduces water requirement for crops, improves seed germination and helps the farmers in arid areas. Less money, diesel, electricity spent on irrigation.