I apologize for posting a question and not giving an answer. Been very busy and though I have checked TBN several times on my Iphone I hate typing on it.
The question was how much more land, people, and oil would it take to produce the amount of food we need if chemicals were not used. As several people said, there are several estimations on this but the low guess is twice the land, three times the people, and four times the oil.
I grew up on a farm in the sixties and I think these numbers are very low. My guess, for what it is worth, is three times the land and people, and four times the oil.
Now I'm gonna take a shower and go to bed. Retirement can sometimes be hard work.
RSKY