There are significant petroleum derived inputs to corn farming, which combined with the low energy yield of corn ethanol, result in it not being a net carbon ze

There are significant petroleum derived inputs to corn farming, which combined with the low energy yield of corn ethanol, result in it not being a net carbon zero energy source at all: https://www.pnas.org/content/pnas/suppl/2006/07/05/0604600103.DC1/04600Table1.NEW.pdf&ved=2ahUKEwiRipz2q-jjAhVTu54KHZyhAvsQFjAAegQIAhAB&usg=AOvVaw1bVi11h4YRYP7s-d9DjTst https://www.pnas.org/content/pnas/suppl/2006/07/05/060460010...