Which practice helps reduce soil compaction and improve root growth in turf?

• A. Deep aeration
• B. Reducing mowing height
• C. Frequent mowing
• D. Excessive fertilizer

Answer: (A)

Soil structure and how roots access air and water shape root growth. Deep aeration directly relieves soil compaction by opening up the subsoil, removing plugs, and creating longer rooting channels. This lowers bulk density and expands pore space, letting roots penetrate deeper, receive more oxygen, and move water and nutrients more freely. With these improved conditions, turf roots grow more vigorously and the stand becomes more resilient to traffic and drought.

The other practices don’t address the physical density of the soil. Reducing mowing height doesn’t relieve compaction and can stress the plant; frequent mowing increases traffic and soil wear; excessive fertilizer boosts shoot growth without improving root-zone aeration or porosity.