Powdery mildew
white fluffy colonies, first and foremost on the upper side of the leaf. In severe epidemics in cereals, the ears may also be infected. In pepper, the fluffy [...] of the leaf. On the upper side, yellow spots are noticeable. In case of a severe epidemic, the fluffy colonies also appear on the upper side of the leaves [...] the leaves. In most crops, the white colonies later turn brown or grey. Severely affected leaves may turn yellow, curl up or drop off. Life cycle and appearance