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)

Maintaining turf vigor through adequate nitrogen is part of managing necrotic ring spot. This disease tends to cause patches where the turf is stressed or weak, so providing enough nitrogen helps the grass stay healthy, recover more quickly after infection, and fill in damaged areas. That faster recovery and denser stand reduce the opportunities for the pathogen to spread and for symptoms to become prominent. So increasing the total annual nitrogen fertilizer fits into an integrated disease management approach by supporting a resilient stand that can withstand and bounce back from infection. Just be careful not to overdo it—excessive nitrogen can promote soft growth and other problems, so apply N at appropriate rates and timings. The other options don’t reflect this management principle: guidance isn’t “not specified” or solely about lawn size, and the statement isn’t false.