Relieve compaction is a cultural practice that helps reduce disease infestations by improving soil structure.

• A. Relieve compaction
• B. Increase fertilizer
• C. Shade the turf
• D. Overseed frequently

Answer: (A)

Relieving soil compaction improves soil structure, allowing air and water to move freely in the root zone. When soil is compacted, roots struggle to grow, drainage is poor, and moist, oxygen-poor conditions foster many turf diseases. By alleviating compaction through practices like aeration or incorporating organic matter, roots can expand, drainage and gas exchange improve, and the turf becomes healthier and better able to resist pathogens. This direct improvement of the growing environment is why relieving compaction best reduces disease infestations.

Other options don’t address the root issue: adding fertilizer can promote lush growth that may invite some diseases and doesn’t fix soil structure; shading the turf doesn’t improve soil conditions; overseeding frequently increases density but leaves underlying compaction unchanged.