Which of the following diseases commonly affects turf grass?

Pythium blight is a significant disease that commonly affects turf grass, particularly in environments with warm temperatures and high humidity. It is caused by the Pythium species, which thrive in moisture-laden conditions and have a rapid growth rate, leading to the rapid decline of affected turf. This disease is characterized by water-soaked lesions and a greasy appearance on the grass blades, which can quickly turn into brown patches.

Understanding the conditions that favor its development is crucial for turf management. For instance, over-irrigation, poor drainage, and compacted soil can exacerbate Pythium blight outbreaks. Effective control strategies include proper irrigation management, cultural practices that promote air circulation and drainage, and the use of fungicides specifically targeting Pythium pathogens.

Other options listed, while they can also be associated with turf grass, don’t encompass the same level of commonality or severity associated with Pythium blight. Leaf spots refer to various foliar diseases but tend to have a more localized impact and can be caused by a variety of fungi or bacteria. Anthracnose is another fungal disease that can affect turf but is often seen as a secondary issue, particularly in stressed grass, thus making it less commonly problematic than Pythium bl