Food vs. fuel: MSU scientists say growing grain for food is more energy efficient

EurekaAlert!
Public release date: 19-Apr-2010
Michigan State University

EAST LANSING, Mich. — Using productive farmland to grow crops for food instead of fuel is more energy efficient, Michigan State University scientists concluded, after analyzing 17 years' worth of data to help settle the food versus fuel debate.

"It's 36 percent more efficient to grow grain for food than for fuel," said Ilya Gelfand, an MSU postdoctoral researcher and lead author of the study. "The ideal is to grow corn for food, then leave half the leftover stalks and leaves on the field for soil conservation and produce cellulosic ethanol with the other half."

Other studies have looked at energy efficiencies for crops over shorter time periods, but this MSU study is the first to consider energy balances of an entire cropping system over many years. The results are published in the April 19 online issue of the journal Environmental Science & Technology.

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