I imagine that this would also need a long growing season. I have lived both in California with an 11 month growing season and in the Midwest with a shorter growing season, and an acre of California land will raise many times what an acre of Kansas last can raise, because the growing season is longer
Tyler Ludens wrote:Ecology Action has determined that it takes a minimum of 4000 square feet to grow a nearly nutritionally complete vegan diet for one adult using Biointensive growing methods. This amount of land is under good conditions. Poor land or difficult conditions will require more area. Using different methods is likely to require more area.