Which description defines a well-aggregated soil?

Which description defines a well-aggregated soil?

• A. High organic matter
• B. Free movement of air and water
• C. Low porosity
• D. Very fine texture

Answer: (B)

Well-aggregated soil has particles bound into stable clumps that create an open network of pore spaces. This structure lets air and water move through easily, which supports root growth, drainage, and soil life. The ability for air and water to flow freely through the soil is the best sign of good aggregation, because it reflects well-developed aggregates and proper porosity. Organic matter helps build these aggregates, but a soil with low porosity or a very fine texture would restrict movement and indicate poorer structure. So, the description that fits best is the free movement of air and water through the soil.

Well-aggregated soil has particles bound into stable clumps that create an open network of pore spaces. This structure lets air and water move through easily, which supports root growth, drainage, and soil life. The ability for air and water to flow freely through the soil is the best sign of good aggregation, because it reflects well-developed aggregates and proper porosity. Organic matter helps build these aggregates, but a soil with low porosity or a very fine texture would restrict movement and indicate poorer structure. So, the description that fits best is the free movement of air and water through the soil.