 Currently, about of butanol can be produced per bushel of corn ((2.5*3785.411784/25.40117272)round0 l/t).Meanwhile, about of ethanol can be produced per bushel of corn ((2.75*3785.411784/25.40117272)round0 l/t).Our current production of ethanol is about , but it requires 20% of the United States' corn crop and only replaces 1% of its petroleum use.