Susceptibility of Agricultural Soils to Interrill Erosion
1984
Meyer, L. D. | Harmon, W. C.
Soil losses from crop row sideslopes were evaluated for 18 soils in a bare, tilled condition to determine their relative susceptibilities to interrill erosion. Erodibilities varied by a ratio of > 10:1 for the initial run and by 4:1 for succeeding runs. The poorly aggregated high-silt soils were most erodible, and the high-clay soils were least erodible. Simple correlations of interrill erosion with various soil properties were determined. Erosion was best correlated with clay (<2 µm) percentage, 1500 kPa water, exchangeable calcium, sum of exchangeable bases, cation exchange capacity, and organic matter content, all negatively. Interrill erosion was well correlated (positively) with the site specific K-factor of the universal soil loss equation.
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