2. Soil Productivity Factor

This factor is based on soil productivity indexes using data from the National Cooperative Soil Survey. Soil productivity indexes indicate the relative productivity of a soil map unit for a specific crop. For example, the most productive soil (for a given crop at the county level) has been assigned an index of 100, while other soils are assigned lower relative index values. Montana productivity indexes for cropland are based on potential spring wheat yields. County level indexes can be accessed via the World Wide Web through the electronic FOTG under Section II-Natural Resource Information, Part A-Soils Information.

Weight = 0.15

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