The chemical makeup of any soil has a profound impact on relative soil health and the ability to support optimum plant growth. Key chemical factors are pH, salinity, soil cations, and organic matter composition.
The quantity and diversity of soil biology is a primary indicator of soil health. Proper biology relies on various factors to support optimum function: root growth, air/water relationships, soluble carbon, and chemical balance. These factors improve nutrient availability.
Plants form a symbiotic relationship between roots and soil microorganisms. This is accomplished through plant root exudates. As plants release exudates into the soil, there is an increase in quantity and diversity of soil biology.