A number of public entities have slammed a recently published report which claims corn-based cellulosic ethanol is actually worse for the greenhouse effect that gasoline.
The $500,000 study – paid for by US government and released in Nature Climate Change – concludes that biofuels made with corn residue release 7% more greenhouse gases in the early years compared with conventional gasoline.
The American Council of Renewable Energy claimed "The study was conducted under highly unrealistic conditions. It took place on a single, experimental field at the University of Nebraska where 75% – 100% of the corn residue (stalks, stover, and other leftovers from the harvest) was removed from the land for ethanol production over 9 years. As any farmer can tell you, this is absurd. In reality, no farmer removes nearly that much corn residue from their fields because that will render the land unsuitable for crop growth soon after."
U.S. Agriculture Secretary Tom Vilsack said on april 22 during a speech at a Drake University forum on climate change: "Everyone assumes what's happening globally is happening nationally. Clearly, there are challenges globally in terms of agriculture and its contribution to greenhouse gas emissions. That's not necessarily the case in the United States."