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Brown rot

Brown rot is a highly infectious fungus that makes characteristic circular rings plums, cherries, apples and pears.

Also known as:
Fruit Rot

recognize monilinia spp
Monilinia fungus, photo: Aleksandr Abrosimov - CC BY-SA 4.0

Brown rot (Monilinia spp.) This highly infectious fungus makes the characteristic circular rings on plums, cherries, apples and pears. Often the affected fruits dry up and remain as brown wads on the tree. The fungus overwinters in twigs, flower buds, dried, affected fruit on the tree and fall fruit.
Plums and cherries are particularly susceptible to brown rot after being cracked by excessive rain.

Where to find

Control

Clean up fallen fruit, remove dried fruit from the tree, prune away affected branches. Clean hands and tools thoroughly after contact with fruit or branches to prevent contamination.

Prevention

In professional fruit growing, fungicide is used preventively during the main flowering period – this is not applicable in the vegetable and ornamental garden.