* Note: Nearly all of the grain used for fuel ethanol in the United States is corn; the small share of other grain used is not included in these figures. Also note that corn used for fuel ethanol in a given year comes from the previous year's crop; therefore, the 119 million tons of corn used for fuel ethanol in 2010 is reported as 28.7 percent of the 2009 grain crop of 416 million tons.
Source: Compiled by Earth Policy Institute with corn used for fuel ethanol from U.S. Department of Agriculture (USDA), Feed Grains Database, electronic database, at www.ers.usda.gov/Data/FeedGrains, updated 14 July 2010; U.S. corn and grain production from USDA, Production, Supply and Distribution, electronic database, at www.fas.usda.gov/psdonline, updated 9 July 2010.
This is part of a supporting dataset for Lester R. Brown, World on the Edge: How to Prevent Environmental and Economic Collapse (New York: W.W. Norton & Company, 2011). For more information and a free download of the book, see Earth Policy Institute on-line at www.earth-policy.org.