A Field Trial using Low Application Rates of Polyacrylamide (PAM) to Reduce Soil Erosion from Disturbed Piedmont Soils
Glazer, Rebekah L.
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Land disturbing activities during urban and suburban development are increasing soil erosion and leading to increasing turbidity in surface waters of Georgia. In two field trials, we tested the efficacy of low applications rates of polyacrylamide (PAM) for reducing soil erosion on recently disturbed slopes of 15 and 35%. The total suspended solids (TSS) of runoff waters for treatments of PAM in combination with hydroseeding were compared to hydroseeding alone or to controls. TSS of runoff waters from PAM with hydroseeding or hydroseeding alone was similar and both treatments were lower than controls. All treatments, however, showed >20-fold decreases in TSS with time. Currently, we are testing higher rate applications of PAM as a potentially more effective means of reducing soil erosion.