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Marginal land can help meet US biofuel target: study

Land unfit for growing food could make a big contribution to the United States' biofuel needs with wild-growing, non-grain crops, a study said Wednesday.Land unfit for growing food could make a big contribution to the United States' biofuel needs with wild-growing, non-grain crops, a study said Wednesday. So-called marginal land in 10 states in the American Midwest could produce as much as 5.5 billion gallons of ethanol per year, a team of researchers wrote in the journal Nature.