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'''Unsheltered distance''' or L factor – WEQ is the unsheltered distance along the prevailing wind [[erosion]] direction across the field or area to be evaluated.
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· For NRI, the unsheltered distance is expressed in feet, measured through the sample point, parallel to the prevailing wind direction during the critical wind erosion period.
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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] <br>
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[[Category:Agriculture]]
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{{USDA_Terms}}
 
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