Field evaluation of the effect of two superabsorbent polymers A200 and Stakosorb on hydraulic performance in furrow irrigation

The study was conducted at the experimental farm of college of Aburayhan of University of Tehran located in Karaj. The aim of this study was to investigate the effect of using superabsorbent polymer on flow hydraulic parameters of the flow and water infiltration in furrow irrigation. For this purpose, two types of superabsorbent A200 and Stockosorb with two values of 16 and 30 g/m2 of soil under two different flow rates (0.3 and 0.6 L/s) were used. The experiment was carried out in five irrigation regimes and in non-cultivated conditions in the summer of 2018. The results showed that both superabsorbents increased the time of the advance and recession and increased their amount by increasing the amount of superabsorbent. Also, the results showed that the addition of super adsorbent to soil decreased the runoff and increased the amount of infiltration, and with the increase of the flow rate to the furrows, the effect of superabsorbent was reduced. Stockosorb superabsorbent had a greater effect on the increase in advance and Recession times and enhance of water penetration in the soil.