Which disease is mentioned as affecting Kentucky bluegrass in the material?

Which disease is mentioned as affecting Kentucky bluegrass in the material?

• A. Necrotic Ring Spot
• B. Dollar spot
• C. Brown patch
• D. Pythium blight

Answer: (A)

The material mentions Necrotic Ring Spot as affecting Kentucky bluegrass. This fungal disease, caused by Ophiosphaeropsis korrae, creates circular or ringed patches of dead turf, often appearing when the grass is stressed by heat, drought, or poor drainage. It’s a classic issue on Kentucky bluegrass and helps explain why patches with a necrotic ring show up in stressed conditions. While other diseases like dollar spot, brown patch, and Pythium blight can affect cool-season grasses, the material specifically names Necrotic Ring Spot, which is why it’s the best fit here.

The material mentions Necrotic Ring Spot as affecting Kentucky bluegrass. This fungal disease, caused by Ophiosphaeropsis korrae, creates circular or ringed patches of dead turf, often appearing when the grass is stressed by heat, drought, or poor drainage. It’s a classic issue on Kentucky bluegrass and helps explain why patches with a necrotic ring show up in stressed conditions. While other diseases like dollar spot, brown patch, and Pythium blight can affect cool-season grasses, the material specifically names Necrotic Ring Spot, which is why it’s the best fit here.