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Fungal diseases; Alternaria blotch Alternaria mali = A. alternata apple pathotype Alternaria rot Alternaria alternata: American brown rot Monilinia fructicola: Anthracnose canker and bull's-eye rot Pezicula malicorticus Cryptosporiopsis curvispora [anamorph] Apple scab: Venturia inaequalis Spilocaea pomi [anamorph] Apple ring rot and canker
In trees, heart rot is a fungal disease that causes the decay of wood at the center of the trunk and branches. Fungi enter the tree through wounds in the bark and decay the heartwood . The diseased heartwood softens, making trees structurally weaker and prone to breakage.
Cadophora malorum is a saprophytic plant pathogen that causes side rot in apple [3] and pear [4] and can also cause disease on asparagus [5] and kiwifruit. [6] C. malorum has been found parasitizing shrimp and other fungal species in the extreme environments of the Mid-Atlantic Ridge, and can be categorized as a halophilic psychrotrophic fungus [7] and a marine fungus.
Botryosphaeria obtusa is a plant pathogen that causes frogeye leaf spot, black rot and cankers on many plant species. [1] On the leaf it is referred to as frogeye leaf spot; this phase typically affects tree and shrubs. In fruit such as the apple, cranberry and quince, it is referred to as black rot, and in twigs and trunks it causes cankers. [1]
The second reason is if the apple tree has a disease, like fire blight. ... This is because cutting too much of the tree can cause it to grow a lot of sprouts, or new branches, which will make the ...
It is a weak orchard pathogen and a cause of rubbery rot, also known as speck rot, in postharvest apples. First described in North Germany, it affects several apple varieties, including commercially important Jonagold and Elstar. Losses caused by P. washingtonensis during storage are usually below 1% but can reach 5–10% of apples. [2]
The diagnosis of a P. cactorum infection of trees, is based on the identification of symptoms, in particular the oozing cankers, and confirmation of symptoms in a diagnosis lab or utilization of a field ELISA detection kit. [3] P. cactorum can be a major problem in apple orchards, as it can cause crown, collar, and root rots in apple trees.
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