The National Commodity Crop Productivity Index 3.0 replaces version 2.0 as the National Crop Index. The NCCPI is a method of arraying the soils of the U.S. for non-irrigated commodity crop production based on their inherent soil properties. The interpretation is applicable to both heavily populated and sparsely populated areas. Ratings are for soils in their present condition. The present land use is not considered in the ratings. Most of the NCCPI criteria relate directly to the ability of soils, landscapes, and climates to foster crop productivity. The NCCPI is based on productivity for four crops: Corn, Soybeans, Small Grains, or Cotton. The maximum productivity rating, based on the highest value for these crops, is shown on the map.
National Commodity Crop Productivity Index 3.0
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