Various organic and inorganic mulches are used for soil conservation purposes, classic carlectables - recent releases the effectiveness of which on soil characteristics has not been comprehensively considered from different aspects.The present study surveys the efficiency of straw mulch, manure and TA-200 polyacrylamide with respective rates of 500, 300 and 50 g m−2 in changing sediment concentration and soil loss.The experiments were conducted for sandy-loam soil taken from a summer rangeland, the Alborz Mountains, northern Iran.
The experiments were performed under laboratory conditions with simulated rainfall intensities of 30, 50, 70 and 90 mm h−1 and a slope of oliver peoples forman r 30%.The results showed that the straw mulch decreased soil erosion at rate of 45.60% compared to the control plots and performed better than manure (8.
98% reduction) and PAM (4.74% reduction).The results showed that the maximum reduction in sediment concentration and soil loss for all soil amendments occurred at the rainfall intensity of 90 mm h−1 with the rates of 58.
69 and 63.24% for straw mulch, 14.65 and 13.
14% for manure and 20.15 and 23.44% for TA-200.