Abstract
Surface irrigation is the oldest and the most widely used method of irrigation. One disadvantage of surface irrigation is soil erosion. New technology employing water-soluble polymers may provide a technique that is effective and affordable to control soil erosion. Water-soluble anionic organic compound known as polyacrylamide polymer (PAM) is the most successful polymer in controlling soil erosion. This study investigated the effect of spraying PAM on the soil surface to control soil erosion and to increase soil infiltration on a Jordanian clay loam soil. Different PAM concentrations, namely 5, 10, and 20 mg/l in addition to the control (0 mg/l) were used in this study. The highest effect of PAM on the measured properties was attained at 20 mg/l. We noticed that PAM's efficiency was decreased with subsequent irrigations. The reduction in soil erosion was 72 and 47.6%, the reduction in runoff water turbidity was 83 and 35%, the increase in water advance time was 6 and 0.9% and the increase in soil infiltration was 36 and 20.8% for the first and fourth irrigation, respectively. PAM's efficiency in flocculating soil particles was studied in the lab where we noticed that its efficiency in sedimentation was increased as its concentration increased.
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