Abstract
Rainfall intensity (I), antecedent water content, and slope steepness affect soil loss from interrill areas. Objectives of this field study were to (i) test the validity of the assumption that interrill soil loss is a function of I 2 , (ii) determine effect of antecedent water content on interrill erodibilities (K i ) for two slope steepnesses, (iii) evaluate the slope factor used in the water erosion prediction project (WEPP), and (iv) evaluate the product of I, flow discharge, and slope steepness as a possible interrill erosion model. Four soils, ranging in texture from sandy loam to clay, were exposed to sequences of simulated rainfall at three intensities (50, 70, and 100 mm h −1 ). Soil loss and runoff were measured from airdried and prewetted flat plots and from air-dried and prewetted ridged plots [...]
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