A practical guide (including charts and planning grids) for growing more food in a smaller area: double digging, compost making, plant spacing, and biodiversity settings. The biointensive method is based on the 40 years experience of John Jeavons with the non-profit Ecology Action. Biointensive growing aims for larger yields from smaller spaces while also improving soil quality, working toward a closed-loop system of fertility. Through minimizing land use for food production, more land can be set aside for biodiversity and ecosystem regeneration, while responding to the nutritional needs of a society faced with land scarcity and overpopulation in the coming post-fossil fuel era.
Exerpts can be seen here.