Besides Kentucky bluegrass, Necrotic Ring Spot can be found on which of the following grasses?

• A. Red fescue
• B. Bermuda grass
• C. St. Augustine grass
• D. Centipedegrass

Answer: (A)

Necrotic Ring Spot is a fungal disease that targets cool-season grasses and shows up as circular patches of dead turf, often with a green fringe. Kentucky bluegrass is the classic host, and red fescue is another cool-season grass known to be susceptible to this disease under the right conditions. The warm-season grasses listed—Bermuda, St. Augustine, and Centipedegrass—tend to resist this particular disease or exhibit different issues, so they’re unlikely hosts. So red fescue is the grass among the options that can host Necrotic Ring Spot besides Kentucky bluegrass.