Soils, Part 3:
pH and Fertilization
Learn about the life under your feet in this three-part series. In this class, instructor Karin Stretchko discusses soil pH and the many factors affecting it within soil chemistry, plant nutrition, and the nitrogen, phosphorus and potassium cycles, including fertilization and how to read fertilizer labels. Parts 1 and 2 examined the physical properties of soil, life in the soil, organic matter, and sustainable gardening.