Regarding necrotic ring spot, increasing the total annual nitrogen fertilizer is recommended as part of an integrated disease management strategy.

Regarding necrotic ring spot, increasing the total annual nitrogen fertilizer is recommended as part of an integrated disease management strategy.

• A. Not specified
• B. Depends on lawn size
• C. True
• D. False

Answer: (C)

Nutrition level in turf plays a big role in how a disease like necrotic ring spot expresses itself and how quickly the turf can recover. Providing adequate, and sometimes higher, total annual nitrogen helps the turf grow more vigorously and fill in damaged patches faster. That increased vigor supports faster root and shoot regrowth after the pathogen has affected the crown and roots, which reduces the visible impact of the rings and helps the stand recover more quickly. This is part of an integrated disease management strategy because it pairs with cultural practices (proper irrigation, drainage, mowing height, and soil care) and, when needed, fungicide timing to keep the disease under control. It’s a matter of balancing growth and stress tolerance through nitrogen management rather than letting the disease linger in thin, stressed turf.