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Rust, Kern's pear Gymnosporangium kernianum. Rust, Pacific Coast pear Gymnosporangium libocedri. Rust, pear trellis (European pear rust) Gymnosporangium fuscum. Rust, Rocky Mountain pear Gymnosporangium nelsonii. Side rot Phialophora malorum. Silver leaf Chondrostereum purpureum. Sooty blotch Gloeodes pomigena. Thread blight (Hypochnus leaf blight)
In the European pear, it is the cause of the disease known as late leaf spot. [1] The geographic distribution includes India , South America , and the south-eastern United States . [ 2 ]
Bosc Pear, from The Pears of New York (1921) by Ulysses Prentiss Hedrick [1] The Beurré Bosc or Bosc is a cultivar of the European pear (Pyrus communis), originally from France or Belgium. Also known as the Kaiser, it is grown in Europe, Australia, British Columbia and Ontario, Canada, and the U.S. states of California, Washington, and Oregon.
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Pyrus pyraster (syn. Pyrus communis subsp. pyraster), also called European wild pear, is a species of pear of the family Rosaceae. This wild pear and Pyrus caucasica (syn. P. communis subsp. caucasica ) are thought to be the ancestors of the cultivated European pear ( Pyrus communis subsp. communis ).
Fire blight, also written fireblight, is a contagious disease affecting apples, pears, and some other members of the family Rosaceae. It is a serious concern to apple and pear producers. Under optimal conditions, it can destroy an entire orchard in a single growing season.
Signs and symptoms are not mutually exclusive, for example a subjective feeling of fever can be noted as sign by using a thermometer that registers a high reading. [7] Because many symptoms of cancer are gradual in onset and general in nature, cancer screening (also called cancer surveillance) is a key public health priority. This may include ...
Pages in category "Pear tree diseases" The following 21 pages are in this category, out of 21 total. This list may not reflect recent changes. * List of pear diseases; C.