This is important note for organic agriculture
https://www.youtube.com/watch?v=aBtaRJvvsK0&t=31s
His book was published in many countries years ago, which helped even the poor soil's reviving. His knowledge is well known and it follows organic agriculture in Jomon & Yayoi era in Japan.
My back home's weather should be almost as same as his firm's area. If I did his way, maybe it is possible. I can crop vegetables and rice as own domestic food.