Black spot disease

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This vine disease (French: excoriose) has been known for a long time and occurs in many wine-growing regions worldwide. It was the most dangerous fungal disease in Europe before powdery mildew. It must not be confused with blackwood disease, which is transmitted by cicadas. At the beginning of the 20th century, black spot disease was probably contained (as a side effect) by intensive control of downy mildew with Bordeaux broth. The "black burner" mentioned in the middle of the 19th century is probably the same disease, based on the symptoms. Anthracnose, which is described as identical in some sources, shows similar symptoms but is caused by a different fungus (Elsinoe ampelina). Black spot disease was first described in Germany in 1965, after it had appeared in the Palatinate a few years earlier. It is caused by the fungus "Phomopsis viticola", which is why it is also named "Phomopsis type 2". The Australian "Phomopsis type 1" is harmless to the grapevine.

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Black spot disease

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