First record of Erysiphe salmonii causing powdery mildew on Fraxinus ornus in Switzerland

Beenken L & Brodtbeck T
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Beenken, L., & Brodtbeck, T. (2020). First record of Erysiphe salmonii causing powdery mildew on Fraxinus ornus in Switzerland. New Disease Reports, 42, 22. https://doi.org/10.5197/j.2044-0588.2020.042.022