Corineo of stone fruit
This problem is linked to the presence of a particular type of mushroom, called Stigmina carpophila, also known as Coryneum beijerinckii. The fungus spends the winter in the form of a mycelium or (more rarely) as a spore, after invading the branch lesions and buds. The conidia, after wintering, germinate and penetrate the tissues, where they then give rise to the infection in the spring. All the organs of the plant are affected (fruits, leaves, young branches) and the infection develops in the very humid and rainy periods, when the temperatures are between 5 and 25 ° C. It should be remembered that, on the other hand, high temperatures block the development of this pathogen: when it exceeds 25-26 ° C, development is inhibited. It is a disease that usually affects plants already weakened by other causes, which may be environmental or parasitic. This pathology is also known with the term padding.
Symptoms of the stone fruit Corineo
Symptoms of Corineo delle stone fruits they vary according to which organs of the plant are affected: lesions in the shape of a red-purple notch with a diameter of a few millimeters are created on the leaves, surrounded by a reddish halo. Over time, the lesions dry up and cause the leaves to take on the typical perforations similar to the shot from a shotgun shot. In the branches of the attached plants, reddish spots are also created which penetrate the bark here, creating lesions from which a rubbery-looking exudate comes out. On young fruits in the growth phase, pustule-shaped spots are created which on ripe ones have the appearance of reddish spots surrounded by a dark halo. Serious attacks cause the premature fall of all fruits.