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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)
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.
Leaves will also undergo chlorosis, turning a pale green or yellow, and later show a red or purple tint. [2] Fruit can either drop prematurely or show surface distortions. [3] Severe infection can also produce lesions on the flowers. [2] The host tree will experience defoliation if the leaves are badly diseased.
Bosc Pears. Bosc pears are unique for their brown color and elongated shape. The skin can have a relatively rough texture, but the flesh is perfectly sweet and crisp.
Spores produced from the fungus-induced swellings on juniper stems can be infectious up to 6 km. The disease causes a yellow-orange spot that turns bright red on leaves of pear trees. The disease can be particularly damaging on pear, resulting in complete defoliation and crop loss if not treated.
As the leaves develop, they become increasingly distorted, and ultimately thick and rubbery compared to normal leaves. The color of the leaves changes from the normal green to red and purple, until a whitish bloom covers each leaf. Finally, the dead leaf may dry and turn black before it is cast off. Changes in the bark are less noticeable, if ...
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.
Sooty blotch and flyspeck is a descriptive term for a condition of darkly pigmented blemishes and smudges caused by a number of different fungi affecting fruit including apples, pear, persimmon, banana, papaya, and several other cultivated tree and vine crops. The greenish black coating resembling soot or flyspeck-like dots grow into irregular ...