PR = Productivity Rating
The actual physical productivity of the soil after all factors that are influencing the productivity have been taken into account. The productivity rating is calculated as follows:

MR x A-Depth x Phys Factors1 = Productivity Rating

1Physical Factors = factor 1 x factor 2 x factor 3

Example:

MR x A-Depth x SA x SD = PR
56 x 1.00 x .96 x .80 = 43.01 rounded to 43




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