Georgia Pesticide Applicators Practice Exam

Which grass disease is the most prevalent in fescue grass?

1. Dollar Spot

2. Brown Patch

3. Rust

4. Snow Mold

The correct answer is: Brown Patch

Brown Patch is the most prevalent disease affecting fescue grass, particularly in warm and humid conditions. This fungal disease is caused by the Rhizoctonia solani pathogen and tends to thrive during the late spring and summer when the temperature and humidity levels are ideal for its development. Brown Patch is characterized by circular patches of dead or dying grass, often surrounded by a darker green ring. It typically occurs in areas with poor drainage or over-fertilization. Understanding this specific disease's impact on fescue grass is crucial for preventing and managing outbreaks, ensuring that fescue maintains its health and aesthetic appeal. While other diseases like Dollar Spot, Rust, and Snow Mold can also affect grass, they are not as predominant in fescue. Each of those diseases has distinct environmental conditions and characteristics that make them less common in fescue compared to Brown Patch. For effective management, knowing which disease is most likely to occur helps applicators focus their prevention and treatment efforts appropriately.