Potential of superabsorbent hydrogels to improve agriculture under abiotic stresses

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 analyzed with univariate multivariate statistics. order under low salinity A>C>B; at high B>A>C. All presented reduction salinity, reductions A C 97% 85%, respectively, while 37% 20 °C greater than 89% higher temperatures. Hydrogel achieved good saline conditions, but only °C. Thus, temperature tolerance this should be improved so it can used improve regions levels. Residual levels decreased by 95% over 30 days, being safe for agricultural applications.