Which practice directly improves soil structure and drainage in turf soils?

• A. Aeration
• B. Heavy liming
• C. Daily mowing
• D. Frequent topdressing only

Answer: (A)

Relieving soil compaction and increasing pore space in the rootzone directly improves both soil structure and drainage. Aeration does this by removing plugs or creating channels in the turf soil, which lowers bulk density and opens macropores that air and water can move through more easily. Those new openings let roots penetrate deeper and access water and nutrients more efficiently, improving overall soil health and drainage. Core aeration is especially effective because it leaves behind actual holes that promote immediate infiltration and reduce surface layering that can impede drainage. The other practices don’t create those subsurface channels: mowing doesn’t change soil structure beneath the surface, topdressing alone helps surface texture and leveling (and may gradually affect surface drainage) but not the critical pore-space increase, and liming mainly alters soil chemistry and pH rather than directly creating the pore structure needed for better drainage.