Interrill Erodibility: Collection and Analysis of Data From Cropland Soils

Interrill erodibility was measured on eighteen cropland soils in the western half of the United States, using a rotating boom rainfall simulator. There were significant differences in infiltration rates, runoff rates, and erosion rates among the soils. A slope factor, based on plot slope, to account for differences observed in interrill erosion rates, is proposed. The data show that this slope factor may also be a function of soil properties. An interrill erodibility coefficient is proposed for each soil.