gnomia leptostyla
Disease caused by that fungus. It develops mainly in cold and wet spring and also on fall. Overwinters in fallen leaves on the ground. It damages leaves, shoots and fruits. External symptoms are easily confused with bacterial.
The copper products used may provide a sufficient treatment. However it is highly effective perform two treatments with myclobutanyl, which has a curative action (max.72 hours after contamination) and 5 days preventive after treatment.