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Miscellaneous diseases and disorders diseases; Peach tree short life Complex of ring nematode, bacterial canker, Cytospora canker, and/or cold injury References
Taphrina deformans is a fungus and plant pathogen, and a causal agent[s] of peach leaf curl. [1] Peach trees infected with T. deformans will experience leaf puckering and distortion, acquiring a characteristic downward and inward curl.
Peach leaf curl is a plant disease characterized by distortion and coloration of leaves and is caused by the fungus Taphrina deformans, [1] which infects peach, nectarine, and almond trees. T. deformans is found in the United States , Europe , Asia , Africa , Australia , and New Zealand . [ 2 ]
Historically, the disease is believed to have originated in Austria, but is now a minor presence for all peach trees typically east of the Rocky Mountains. As a minor disease, peach scab is most dangerous when the scabs develop—allowing brown rot to infect the plant, which is a far more devastating disease. [11]
Shot hole disease is a major concern of the stone fruit industry. It is estimated that 80% of the California almond crop may be infested with shot hole disease, resulting in a potential yield loss of 50-75%. [3] In the 1930s, it was found that applications of Bordeaux mixture reduces shot hole disease on peaches from 80% to 9%.
Ring nematodes can be extremely devastating to peach trees. Infection of ring nematodes can cause peach trees to be more susceptible to bacterial canker and cold damage. This leads to peach tree short life disease, thus vastly reducing peach yields. [10] Along with peaches, it can cause problems with grapes as well.
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Plum pox, also known as sharka, is the most devastating viral disease of stone fruit from the genus Prunus.The disease is caused by the plum pox virus (PPV), and the different strains may infect a variety of stone fruit species including peaches, apricots, plums, nectarine, almonds, and sweet and tart cherries.
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