What are the Seven Keys To Healthy Soil? 1. Soil Atmosphere - Porous soil spacing 2. Water (moisture, film envelopes) percolation 3. Minerals - nutrients-soil solutions-pH 4. Organic material - humus & humus reserves 5. Beneficial  micro-organisms  &  soil animals. 6. Soil enzymes are crucial to all life 7. Lack of interfering substances & actions