[[Conservapedia will be drowned in vandalism. No doubt about it, you can't stop us!]]
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'''Slope-steepness factor''' or S factor – USLE is the ratio of [[soil]] loss from the field slope gradient to that from a 9 percent slope under otherwise identical conditions. Used in Universal soil loss equation (USLE) calculations of sheet and rill erosion.
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==References==
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[http://www.nrcs.usda.gov/technical/NRI/1997/summary_report/glossary.html List of USDA terminology]