…from the ESRI Map Book, Volume 24…
“This map illustrates the predominance of corn grown throughout the midwestern United States in comparison to all other crops and noncrop land-cover categories. Harvested corn includes corn for grain/silage, sweet corn, popcorn, and ornamental corn.
“The categorized Cropland Data Layer (CDL) imagery shown on the map was produced by the U.S. Department of Agriculture, National Agricultural Statistics Service (NASS). The CDL is used within NASS to generate supplemental acreage estimates of commodities for major agricultural states.
“Courtesy of U.S. Department of Agriculture, National Agricultural Statistics Service.”