Agriculture

• 2007 Corn for Grain Yield per Harvested Acre by County and Ethanol Plants
  U.S. Department of Agriculture, National Agricultural Statistics Service
• Top 12 States for Harvested Corn Acreage—2007 Cropland Data Layers
  U.S. Department of Agriculture, National Agricultural Statistics Service
• National Commodity Crop Productivity Index
  U.S. Department of Agriculture, Natural Resources Conservation Service
• California's Agricultural Land Cover—2007 Cropland
  U.S. Department of Agriculture, National Agricultural Statistics Service