Subsoil

Subsoil refers to the layer of soil that lies beneath the topsoil, which is the nutrient-rich layer where most plants grow. The subsoil contains minerals, clay, and organic matter but is typically denser and lower in nutrients compared to the topsoil. It plays a crucial role in water retention and root growth for plants. Subsoil also helps filter water as it moves through the ground and is important for ecosystems and agricultural practices. Understanding subsoil is essential for land use planning, farming, and environmental management.