Since the federal government passed a law in 2007 requiring oil companies to add ethanol to their gasoline, demand for corn has increased, sending farmers looking for new places to plant.
Here are Corn Belt counties that have seen large increases in corn planting (greater than 21,000 acres), ranked by the percentage increase since 2006. This table reflects those places where farmers have planted significantly more corn, both in terms of raw acres and as a percentage.
All data come from the U.S. Department of Agriculture.
The AP focused on counties that increased corn planting by more than 21,000 acres because they represent the top 25 percent of counties based on increased corn acreage.