Increased demand for corn by the ethanol industry has increased corn planted acreage from historical levels. From 2001 to 2006, an average of 79 million acres of corn was planted in the United States, with the highest acreage being 81.8 million acres in 2005. In 2007, corn acreage increased to 93.5 million acres. Figure 1 shows that a large proportion of the 2007 increase in corn acreage came from midwestern farmers reducing soybean acreage in favor of corn.
Babcock, Bruce A. and McPhail, Lihong Lu
"Corn or Soybeans for 2009?,"
Iowa Ag Review: Vol. 15
, Article 4.
Available at: https://lib.dr.iastate.edu/iowaagreview/vol15/iss1/4