A recent paper by Wally Tyner published by Purdue University shows that, at least for Corn Belt states (like Indiana), corn stover could be a better cellulosic ethanol source than switchgrass. The paper considers the cost and prospective profits of whether a farmer could decide to plant and sell corn and corn stover, or plant switchgrass. The answer is clear to the author: corn is more productive, the soil quality is low, in which case switchgrass becomes the winner. There is also a consideratio
A new study from the American Society of Agronomy throws some cold water on the use of corn stover as a feed stock for cellulosic ethanol. Stover is all the stuff that's left over after corn is harvested: the stalks, leaves, and husks. The problem is that there may not be enough stover available to make a difference. A lot of stover is needed to be spread on the fields to replenish the organic matter in the soil and to control erosion.