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 [...] and form a secondary source of infection. They are dispersed by rain, irrigation water or handling of the plants. Infection of the plants happens both passively [...] diseased or stressed plants. How to prevent Angular leaf spot Use clean propagation material and disease-free seed Remove sources of inoculum such as dead leaves