Anthracnose

anthracnosis (GB)

This rather rare vine disease is caused by the fungus Elsinoe ampelina. The symptoms are grey spots with a black centre on the shoots, deeply sunken into the bark. The spots can also be seen on leaves and berries. On the leaves they are outlined in black, the dead tissue later falls out and this results in characteristic small holes as if shot through by buckshot. On the berries, small reddish circles with a dark brown to black border form, resembling a bird's eye (hence the English name bird's-eye red). This causes cracks in the berry skin, which can eventually lead to grape rot through secondary infections. It mainly affects rootstock vines. The black spot disease, which is often described as identical, shows partly similar symptoms, but is caused by the fungus Phomopsis viticola. See also under vine enemies.

Anthraknose - Symptom auf Beere (Bird’s eye) / Symptome auf Trieb, Blatt, Beere (Zeichnung)

Image on the left: CC BY 3.0 us, link
Picture right: By Martin Cilenšek, Public Domain, Link

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Anthracnose

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