Georgia Pesticide Applicators Practice Exam

The described plant condition characterized by small patches of white to gray fluffy growth on leaves and stems is indeed powdery mildew. This fungal disease is known for producing a distinctive white or gray powdery appearance on the surfaces of plants, which is a collection of fungal spores. It typically occurs in warm, dry conditions and tends to thrive in environments with high humidity and low air circulation. The presence of this fluffy growth is a clear visual indicator of the infection, which can spread rapidly if not managed.

Understanding this is important as powdery mildew not only affects the aesthetic quality of ornamentals and crops but can also interfere with the plant’s ability to photosynthesize effectively, leading to stunted growth and overall decline if left untreated. Recognizing this symptom allows for timely management strategies, such as improving air circulation, applying fungicides, or employing resistant plant varieties.