'''Ridge roughness''' (named ''K factor'' in the [[Wind erosion equation]] ) is - according to the [[USDA]] terminology - ''"a measure of the effect of ridges made by tillage and planting implements. It is expressed as a decimal from 0.5 to 1.0. '' | '''Ridge roughness''' (named ''K factor'' in the [[Wind erosion equation]] ) is - according to the [[USDA]] terminology - ''"a measure of the effect of ridges made by tillage and planting implements. It is expressed as a decimal from 0.5 to 1.0. '' |