Welcome to the 'Soils and Compaction' module in our Tier One course!

Understanding soil begins with its basic textural classification, which is determined by the relative proportions of three primary mineral particles: sand, silt, and clay. Sand consists of the largest, coarsest particles, creating an environment with high porosity and rapid drainage, but it inherently struggles to retain essential moisture and nutrients. Conversely, clay is composed of microscopic, tightly layered particles that hold water and chemical nutrients exceptionally well, yet it frequently suffers from poor aeration and slow drainage. Silt represents the intermediate size, offering a compromise between the two. The horticultural gold standard is loam—a balanced, harmonious matrix of these three textures that provides optimal moisture retention, adequate drainage, and a highly hospitable physical environment for root expansion.