Gary Schnitkey, Darrel Good, and Paul Ellinger, «Crude Oil Price Variability and Its Impact on Break —
Even Corn Prices,» Farm Business Management, 30 May 2007; 2006 grain used for
ethanol from U.S. Department of Agriculture (USDA), Economic Research Service (ERS), Feed Grains Database, at www.ers.usda.gov, updated 28 September 2007; 2006 grain harvest from USDA, Production, Supply and Distribution, electronic database at www.fas.usda.gov/psdonline, updated 12 September 2007; 2008 ethanol requirement from Renewable Fuels Association, «Ethanol Biorefinery Locations,» at www.ethanolrfa.org, updated 28 September 2007; 2008 grain harvest from Interagency Agricultural Projections Committee, Agricultural Projections to 2016 (Washington, DC: USDA, February
ethanol from U.S. Department of Agriculture (USDA), Economic Research Service (ERS), Feed Grains Database, at www.ers.usda.gov, updated 28 September 2007; 2006 grain harvest
from USDA, Production, Supply and Distribution, electronic database at www.fas.usda.gov/psdonline, updated 12 September 2007; 2008
ethanol requirement from Renewable Fuels Association, «Ethanol Biorefinery Locations,» at www.ethanolrfa.org, updated 28 September 2007; 2008 grain harvest from Interagency Agricultural Projections Committee, Agricultural Projections to 2016 (Washington, DC: USDA, February
ethanol requirement
from Renewable Fuels Association, «
Ethanol Biorefinery Locations,» at www.ethanolrfa.org, updated 28 September 2007; 2008 grain harvest from Interagency Agricultural Projections Committee, Agricultural Projections to 2016 (Washington, DC: USDA, February
Ethanol Biorefinery Locations,» at www.ethanolrfa.org, updated 28 September 2007; 2008 grain harvest
from Interagency Agricultural Projections Committee, Agricultural Projections to 2016 (Washington, DC: USDA, February 2007).
Another critic argues that the studies fail to consider no - till cultivation of biofuel crops, which actually increase soil carbon storage, and that
corn ethanol plants are converting to renewable energy, thus decreasing their emissions - meanwhile they are competing against fossil fuels like oil
from tar sands that have an increased carbon footprint
even compared to conventional gasoline.