Simple. Ban worldwide use of fungicide on corn, soybeans, and wheat. See an approximate 10% drop in crop yield. Supply drop would raise prices to where ethanol would find it harder to compete with oil. Farmers would have less crop, but higher prices to offset the difference.
The health benefits to the environment would probably be a plus as well.
LOL!
10% reduction?
Let’s see something to back up that number.
Ethanol is a food of sorts. The problem is that more is produced than can be drunk. The excess makes fuel additive