What is an air space between soil particles called?

• A. Pore Space
• B. Producer
• C. Soluble Salts
• D. Stress Factors

Answer: (A)

Air spaces between soil particles are called pore spaces. These voids make up the soil’s porosity and are filled with air when the soil isn’t saturated with water. The size and connectivity of these pores control how easily air moves through the soil, how quickly water drains, and how roots get oxygen. In turf management, keeping enough pore space—especially the larger macropores—helps prevent compaction, supports root growth, and improves drainage and aeration. If soil becomes compacted, pore spaces shrink and roots struggle for air, increasing stress on the plants. The other terms describe things like organisms, dissolved minerals, or environmental pressures, not the actual air-filled spaces between particles.