If the brown coloration comes in the form of bull's eye spots, it's probably Alternaria leaf spot, sometimes referred to as early blight. It's a fungal disease caused by the fungus Alternaria ...
32, No. 3, Apr., 1927 The Blight of Pestilence on Early Modern... The Blight of Pestilence on Early Modern Civilization This is the metadata section. Skip to content viewer section.
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