Georgia Pesticide Applicators Practice Exam

What condition does "Large Patch" refer to?

1. A disease of cool season grasses

2. A disease of warm season grasses

3. A type of weed infestation

4. A nutrient deficiency in roots

The correct answer is: A disease of warm season grasses

Large Patch refers to a disease that predominantly affects warm-season grasses, particularly during periods of wet weather in early spring or fall. This fungal disease is caused by the pathogen Rhizoctonia solani and is characterized by large, circular patches of dead or dying grass. Understanding the conditions in which Large Patch occurs is crucial for effective disease management and prevention strategies. Identifying it correctly as a disease specific to warm-season grasses allows practitioners to take appropriate actions, such as improving drainage, adjusting irrigation schedules, or applying fungicides when necessary, to mitigate its impact on turf health. This focus on warm-season grasses is essential since the disease's presence and management directly correlate with the grass types prevalent in specific regions, including the warmer climates typical of much of Georgia.