Making biofuel from corn crop residue could become economically viable for farmers with government support and, therefore, lead to a major shift in crop rotation practices favoring more continuous corn plantings, Purdue University researchers conclude. The agricultural economists examined how the development of corn stover for cellulosic ethanol would affect corn and soybean markets and the traditional corn-soybean crop rotation in the United States.
http://phys.org/news/2015-11-potential-growth-biofuels-corn-stover.html#jCp