From https://news.ycombinator.com/item?id=43744417 https://news.ycombinator.com/item?id=43744417 : > Though it may be more efficient to grow without soil; soil

From https://news.ycombinator.com/item?id=43744417 https://news.ycombinator.com/item?id=43744417 : > Though it may be more efficient to grow without soil; soil depletion isn't prevented by production processes that do not generate topsoil > Where do soil amendments come from, and what would deplete those stocks? > [JNF, KNF, JADAM], No-Till, Mini-forest, avoid compaction and allow diverse roots to break up the soil and hold moisture "Inoculating soil with mycorrhizal fungi can increase plant yield: study" https://news.ycombinator.com/item?id=38527264 https://news.ycombinator.com/item?id=38527264 : > [...] > Soil fertility > Soil depletion: https://en.wikipedia.org/wiki/Soil_fertility#Soil_depletion https://en.wikipedia.org/wiki/Soil_fertility#Soil_depletion