We've been doing it for thousands of years without massive amounts of chemicals. (Cover crops and crop rotations have been a thing for centuries.) Why not go back? What changed? jews. jews and thier sheckles changed things.
This is part of why the jews are trying to erase our history and end the transfer of knowledge and experience to new generations. If we lose that history and experience, all we will be left with will be the jewish system that is meant to destroy us.