powdery mildew

== English == === Noun === powdery mildew (countable and uncountable, plural powdery mildews) A mildew affecting many important food crops, caused by fungi of the order Erysiphales. ==== Translations ==== === Further reading === powdery mildew on Wikipedia.Wikipedia Erysiphales on Wikispecies.Wikispecies Category:Erysiphales on Wikimedia Commons.Wikimedia Commons