Ornamental and Turf Pesticide Applicators Practice Exam

Dollar spot lesions are characterized by which color margins?

1. Green

2. Brown

3. Yellow

4. Red

The correct answer is: Brown

Dollar spot lesions are characterized by brown color margins. This disease, primarily affecting turfgrass, appears as small, circular patches that can range in size. The brown margins surrounding the lesions result from the action of the fungus causing the disease, which affects the plant's overall health. The brown edges are indicative of the tissue damage that occurs, signifying both the presence and progression of the disease in turfgrass. While other colors may be associated with different types of plant diseases or issues in turf management, the distinct brown margin is a key identifying feature of dollar spot, making it critical for diagnosis and management strategies. Understanding the specific color and characteristics of dollar spot lesions helps turf managers to take timely action in preventing the spread and mitigating the impact of this common turf disease.