Originally Posted by Jae Onasi
We could grow more grain for export--we certainly have plenty of untilled or fallow farmland right now.
That opens up another front that I'm not inclined to deal with.
There must be a fallow period taken during crop production. At any one time, there are at least 25% of fields not in use to allow the soil to recover after each planting. Crop rotation helps this, but fallow periods have to be taken on a regular basis.
Of all the beef you can produce, you end up feeding the cow twenty times as many calories as you get back from its growth. Instead of growing crops for cattle, you could get twenty times as much nutritional value for human consumption.