What is a soil profile and what information can be obtained from it?

• A. A cross-section of the roots
• B. A map of soil moisture
• C. A vertical view of soil layers (horizons) showing texture, color, structure, depth, drainage, and nutrient conditions
• D. A listing of plant species present

Answer: (C)

A soil profile is a vertical view into the soil that shows its layered horizons from the surface downward. This view reveals the characteristics of each layer, including texture (relative amounts of sand, silt, and clay), color (which reflects organic matter content and drainage conditions), structure (how soil particles clump together), how deep each horizon extends, drainage properties (how quickly water moves or accumulates), and nutrient conditions (fertility indicators like mineral content and organic matter). Seeing these features together helps you understand how the soil formed, how it will behave in the field, and how it will support roots, water movement, and nutrient availability. This information is essential for making decisions about planting, irrigation, drainage, and soil amendments. The other options describe aspects like roots, moisture maps, or plant lists, which are not what a soil profile provides.