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Rosellinia rot of pear trees

The spread of root Rosellinia rot disease in Iran is high, but it does not cause significant damage as only one or two trees with each disease may be reported from each garden. The provinces in which the disease has been reported include Isfahan, Karaj, Qazvin and Tehran. The causative agent of Rosellinia nectarix pear disease is called Rosellinia nectarix. Its sexual form is Dematophora nectarix. This fungus produces Prietz and Cinema, which are rarely found in nature. to control this disease use biological fungicides like Trichodermaroot.

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