Laserfiche WebLink
Custom Soil Resource Report <br /> Erosion factor Kf indicates the erodibility of the fine-earth fraction, or the material <br /> less than 2 millimeters in size. <br /> Erosion factor T is an estimate of the maximum average annual rate of soil erosion <br /> by wind and/or water that can occur without affecting crop productivity over a <br /> sustained period. The rate is in tons per acre per year. <br /> Wind erodibility groups are made up of soils that have similar properties affecting <br /> their susceptibility to wind erosion in cultivated areas. The soils assigned to group 1 <br /> are the most susceptible to wind erosion, and those assigned to group 8 are the <br /> least susceptible. The groups are described in the "National Soil Survey Handbook." <br /> Wind erodibility index is a numerical value indicating the susceptibility of soil to wind <br /> erosion, or the tons per acre per year that can be expected to be lost to wind <br /> erosion. There is a close correlation between wind erosion and the texture of the <br /> surface layer, the size and durability of surface clods, rock fragments, organic <br /> matter, and a calcareous reaction. Soil moisture and frozen soil layers also <br /> influence wind erosion. <br /> Reference: <br /> United States Department of Agriculture, Natural Resources Conservation Service. <br /> National soil survey handbook, title 430-VI. (http://soils.usda.gov) <br /> 34 <br />