Cercospora leaf spot is an infectious fungal disease with typical symptoms of purple spots with a gray center. The spots first appear at the bottom leaves of the plant and spread toward the top of the plant.
Symptoms of Cercospora leaf spot first appear as individual, circular spots that are tan to light brown with reddish purple borders. As the disease progresses, individual spots coalesce. Heavily infected leaves first become yellow and eventually turn brown and necrotic.
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