Microbes 1 → 4: Bamboo Grove to 150 kg per 300 Pyeong
Cho walks through his Microbes (IMO) slides: the starter caught under bamboo, IMO2 with equal sugar, IMO3 on rice bran, and IMO4 made with half field soil so the local microbes meet their relatives. He says natural farming restores soil in two months where organic takes one to two years, then shows IMO4 spread at 150 kg per 300 pyeong in a Korean greenhouse: white film, earthworms, risen soil, and a 180 cm stick that goes all the way in.
Found A small starter, propagated, can bring five acres back to normal