Grapes, Elsinoe ampelina, Uncinula necator
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BLACK spot (or anthracnose) and powdery mildew (or oidium) are diseases that occur commonly on grape vines in W.A.
Harvey, H L.
"Black spot and powdery mildew of grapes,"
Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 6
, Article 3.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture4/vol6/iss9/3