Peter van Straaten: Crops from Rocks

Peter van Straaten

$8.00

This retired agro-geologist from the University of Guelph explains how rocks become soil and their continuing roll in agriculture even when not degraded..

(58 minutes, 32 seconds) Recorded at the 2015 Acres U.S.A. Conference, Pittsburgh, Pennsylvania,Thursday, December 10, 2015.

Free Podcast

Humusphere: A New Book Release from Acres U.S.A.

In this breakthrough work — now available in English for the first time — the independent German-Norwegian explorer of soil life, graduate permaculture designer and graduate engineer Herwig Pommeresche shares his lifetime of research into humus.

#7488 • Copyright 2018 • Softcover • 264 pages