Powdery mildew
the colonies mostly occur in these crops. In covered roses, the colonies appear first and foremost on the upper side of the leaves. In most crops, the white [...] contact with water for no more than a few hours. Powdery mildew spores, either ascospores or conidia, don’t need nutrients or water for germination. In general [...] cereals, the ears may also be infected. In pepper, the fluffy colonies occur mostly on the underside of the leaf, because the fungus infects the plant by entering