Hydrogels are a promising management option to increase the efficiency of water use in agriculture arid and semi-arid regions. However, abiotic factors may affect hydrogel efficacy. The effect stress on swelling residual acrylamide hydrogels was evaluated. treatments were three (A, B C), four temperatures (20, 30, 40 65 °C) two salinities (0.003 3.0 dS m−1). degree concentration measured. Data ...