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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 ...
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]
Bitter rot of apple management begins with good horticultural practices that includes the planting of trees that are less susceptible to bitter rot, the removal of infected fruit, dead twigs, and cankers during the dormant season, good horticultural practices to maintain the health and vigor of the tree, and training and pruning the tree to ...
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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Fruit rot caused by the brown rot pathogen Monilinia fructigena is a notorious ailment found in Malus domestica—the apple tree—with the fungus occasionally spreading from the infected fruit to the branches, causing cankering. With apple infections, a varying symptom can occur within the fruits, causing what is commonly known as “black ...
Brown rot on apple. Fruit rot appears as small, circular brown spots that increase rapidly in size causing the entire fruit to rot. Greyish spores appear in tufts on rotted areas. [4] Infected fruit eventually turn into shrivelled, black mummies that may drop or remain attached to the tree through the winter.