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A Consolidation Model for Estimating Changes in Rill Erodibility

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Transactions of the ASAE. 31 (3): 0696-0700. (doi: 10.13031/2013.30769) @1988
Authors:   M. A. Nearing, L. T. West, L. C. Brown

ABSTRACT SOIL erodibility changes with time after tillage. A mathematical model is presented that estimates variations in rill erosion parameters as a function of consolidation. Consolidation is defined as the increase in soil stability which occurs because of effective stresses in soils. Effective stresses are induced by negative soil water matric potentials that occur during moisture redistribution after rainfall. A method for calculating effective stresses is presented, as well as a relationship for relating effective stress history to changes in rill erosion resistance. An application of the model for field rill erosion of silt loam soil is presented.

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