Part of a lecture done by Youngsang Cho at Jadam Daejeon office in Dec 15, 2016
Zero input happens only in nature where all the leaves and fruits fall on the ground. It is not possible in farming. Humans take all the fruits and thus the minerals. How do we replace the lost minerals?
Look at it in an earth-perspective. All leached minerals eventually end up in the ocean. There are 83 elements found in sea water; it contains much of essential nutrients for plants. 1 ml of sea water holds 100 million microbes which also promote soil biodiversity.
(from "Jadam Organic Farming" by Youngsang Cho)
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