The Science of Soil Structure: Building Aggregates and Tilth

What Soil Structure Actually Is Soil structure refers to the way individual soil particles — sand, silt, and clay — are arranged and bound together into aggregates or clumps. A well-structured soil has abundant stable aggregates with pore spaces between them that allow air, water, and roots to penetrate freely. A poorly structured soil has either dispersed individual particles (like beach sand) or has compacted into dense clods with few pore spaces. The difference in plant growth performance…