Thousand cankers disease (TCD) is a recently recognized disease of certain walnuts (Juglans spp.). The disease results from the combined activity of the walnut twig beetle (Pityophthorus juglandis) and a canker producing fungus, Geosmithia morbida. Until July 2010 the disease was only known to the western United States where over the past decade it has been involved in several large scale die-offs of walnut, particularly black walnut, Juglans nigra. However, in late July 2010 a well-established outbreak of the disease was found in the Knoxville, Tennessee area. This new finding is the first locating it within the native range of its susceptible host, black walnut. In 2013, an outbreak was found in the Veneto region of Italy, where the disease has been found on both black walnut and English
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| - Thousand cankers disease (TCD) is a recently recognized disease of certain walnuts (Juglans spp.). The disease results from the combined activity of the walnut twig beetle (Pityophthorus juglandis) and a canker producing fungus, Geosmithia morbida. Until July 2010 the disease was only known to the western United States where over the past decade it has been involved in several large scale die-offs of walnut, particularly black walnut, Juglans nigra. However, in late July 2010 a well-established outbreak of the disease was found in the Knoxville, Tennessee area. This new finding is the first locating it within the native range of its susceptible host, black walnut. In 2013, an outbreak was found in the Veneto region of Italy, where the disease has been found on both black walnut and English (en)
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| - Thousand cankers disease (en)
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| - California
- Canker
- Provo, Utah
- Mortality rate
- Vegetation
- Beetle
- Boulder, Colorado
- Scolytinae
- Arborist
- Juglans regia
- Pest (organism)
- United States
- United States National Agricultural Library
- Veneto
- Inoculation
- Colorado
- Colorado Springs, Colorado
- Colorado State University
- Genetic analysis
- Entomological Society of America
- Fungus
- Branch
- Cork cambium
- Pityophthorus juglandis
- Logan, Utah
- Los Angeles County, California
- Silver City, New Mexico
- Host (biology)
- Spore
- Symposium
- Symptom
- Washington (U.S. state)
- Westminster, Colorado
- Juglans
- Juglans californica
- Juglans hindsii
- Juglans major
- Juglans microcarpa
- Juglans nigra
- Nutrient
- Walnut twig beetle
- EspaƱola, New Mexico
- Bark (botany)
- Bark beetle
- Disease
- Geosmithia morbida
- Grant County, New Mexico
- Researcher
- Nut tree diseases
- Hypothesis
- Pathogenicity
- Fungal tree pathogens and diseases
- Biological dispersal
- Tissue (biology)
- Wilting
- Idaho
- New Mexico
- Oregon
- Twig
- Walnut
- Nectria
- Overwintering in insects
- Firewood
- Mycelium
- Phloem
- St. Louis, Missouri
- Funnel trap
- Genetic bottleneck
- dbr:Susceptibility_(botany)
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| - A walnut tree in Denver, Colorado affected by Thousand cankers disease. (en)
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| - Thousand cankers disease (TCD) is a recently recognized disease of certain walnuts (Juglans spp.). The disease results from the combined activity of the walnut twig beetle (Pityophthorus juglandis) and a canker producing fungus, Geosmithia morbida. Until July 2010 the disease was only known to the western United States where over the past decade it has been involved in several large scale die-offs of walnut, particularly black walnut, Juglans nigra. However, in late July 2010 a well-established outbreak of the disease was found in the Knoxville, Tennessee area. This new finding is the first locating it within the native range of its susceptible host, black walnut. In 2013, an outbreak was found in the Veneto region of Italy, where the disease has been found on both black walnut and English walnut. (en)
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