Dr. Elaine Ingham delves into the science of the soil in terms of F:B ratios, pH, the Nitrogen Cycle, Biological Farming, No Till, & more!!! Want even more?? You can download The Permaculture Student 2 FREE which was peer-reviewed and edited by Dr. Elaine Ingham along with dozens of other experts - see what fully cited, reviewed, and edited permaculture looks like: http://www.thepermaculturestudent.com/download-ps2-free
