Lecture 28 – Soils: Restricted Access


Soil is often called the last frontier of modern science. We know more about the ecology of the ocean than we do about soil. Conventional agriculture treats soil as a lifeless mix of rocks and minerals. The truth we have come to learn is that the soil is alive. It is teeming with bacteria, fungi, and other micro-organisms. But how is soil made? How does climate sculpt the soil landscape? All of these elements influence how we do permaculture design.

Understanding the interplay of climate, water, and soil are integral to good plant growth. Larry introduces the class to soils – how they are made, their composition in different ecosystems, its relationship with water, how mountains and valleys are formed over geological time, how soil erosion happens, and how the decomposition process happens.