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Phomopsis canker, fruit decay and rough bark Phomopsis mali Diaporthe perniciosa [teleomorph] Phymatotrichum root rot = cotton root rot Phymatotrichopsis omnivora = Phymatotrichum omnivorum. Phytophthora crown, collar and root rot = sprinkler rot Phytophthora spp. Phytophthora cactorum Phytophthora cambivora Phytophthora cryptogea Phytophthora ...
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]
Trichothecium roseum is known to produce pink rot on apples particularly following an apple scab infection caused by Venturia inaequalis. [1] Studies have shown that roseotoxin B, a secondary metabolite of T. roseum, can penetrate apple peels and cause lesions. [17] Trichothecium roseum also causes apple core rot which is a serious problem in ...
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 tree focus more on regrowing branches and less time on apple production ...
On the apple tree, the infections occur on leaves, fruit and young twigs. [4] The brightly colored spots produced on the leaves make it easy to identify. Small, yellow-orange spots appear on the upper surfaces of the leaves, anytime from April to June. [5] These spots gradually enlarge and turn orange or red and may show concentric rings of color.
Bitter rot of apple is a fungal disease of apple fruit that is caused by several species in the Colletotrichum acutatum and Colletotrichum gloeosporioides species complexes. [1] It is identified by sunken circular lesions with conical intrusions into the apple flesh that appear V-shaped when the apple is cut in half through the center of the ...
Apple scab is a common disease of plants in the rose family that is caused by the ascomycete fungus Venturia inaequalis. [1] While this disease affects several plant genera, including Sorbus, Cotoneaster, and Pyrus, it is most commonly associated with the infection of Malus trees, including species of flowering crabapple, as well as cultivated apple.
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