Angular leaf spot
most important, but also all types of vascular tissue of the crown can be infected, creating a look similar to that of a Phytophthora fragariae infection [...] t. When conditions are humid, a viscous bacterial exudate forms on the underside of the leaf. This exudate changes to a white film when it dries. Lesions [...] bacteria ooze from the lesions on the leaves and form a secondary source of infection. They are dispersed by rain, irrigation water or handling of the plants