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New photo gallery: Septoria leaf spot of Parsley

Symptoms are small brown leaf spots, sometimes with characteristic tan centers and tiny black round structures (pycnidia) where the pathogen’s spores are produced.  Tiny, dark brown spots (usually less than ¼ inch in diameter) also develop with bacterial leaf spot, therefore it is important to look for the diagnostic pycnidia in the spots to distinguish these diseases.

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septoria on parsley

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