Dollar spot disease is most severe in which type of grass?

Dollar spot disease is most severe in Bermudagrass, which makes it the correct choice for this question. Bermudagrass is particularly susceptible to this fungal disease due to its growth habits and environmental preferences. The disease thrives in conditions that can often be found in Bermudagrass lawns and sports fields, such as high humidity, warm temperatures, and frequent mowing, which can contribute to stress on the grass.

In contrast, while fescue, ryegrass, and tall fescue can also experience dollar spot, they generally exhibit better tolerance and resistance compared to Bermudagrass. Fescue and its varieties are often more robust in cooler, wetter conditions, while ryegrass is typically more resilient in transitional climates. Tall fescue has deeper root systems and a different growth habit that helps it endure periods of stress better than Bermudagrass. Understanding these differences helps in managing turfgrass and preventing the onset of diseases like dollar spot in various grass types.