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Symptoms
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Red spots on the leaves, showing a sharp border, later on changing to brown and falling out, leaving a hole of about 1mm in size; on the shoots reddish bark necroses, several cm in length; sometimes also gummosis (gum-flux); on the fruits sunken spots, later on holes resembling feeding-damage.
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Impact
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This asexual microfungus tends to epidemic spread in cool and rainy weather, causing loss of fruits; repeated epidemics may weaken young trees or (rarely) kill them.
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Control
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In nurseries, orchards or on ornamental trees use of fungicides in spring (see federal register of plant protection). As a preventive measure infested leaves as well as fruit-mummies should be removed in autumn.
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| Hosts |
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Cherry;
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| Affected plant parts
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Leaf;
Shoot/Twig/Branch;
Stem;
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