Thousand-cankers Disease in Arkansas
Thousand-cankers disease (Geosmithia morbida Kolařík, Freeland, Utley, and Tisserat (Ascomycota: Hypocreales)) is a fungal pathogen affecting most of the North American species of walnuts (Juglans L.). Some walnuts are moderately susceptible, but others such as black walnut (Juglans nigra L.) are highly susceptible. Thousand-cankers disease is unique among invasive pests in being, in a sense, a home-grown invasive pest. It is native to western North America. The fungus that causes thousand-cankers disease was first identified and reported in 2010. Based on descriptions of symptoms, it is suspected of killing walnut trees as far back as the early 1990′s. To date, the disease has not been found in Arkansas; but both black walnut and butternut (Juglans cinerea L.) are native to Arkansas.
What is thousand-cankers disease?
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What are the symptoms of thousand-cankers disease?
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Who spreads thousand-cankers disease?
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How will thousand-cankers disease affect you?
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What can we do about thousand-cankers disease?
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Where is thousand-cankers disease?
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Circular 11, Regulations on Plant Diseases and Pests (Arkansas - skip to page 54 for TCD information)
Diagnosing Thousand Cankers Disease of Walnut
Emergency Quarantine of Thousand Cankers Disease
Pathway Assessment: Geosmithia sp. and Pityophthorus juglandis Blackman movement from the western into the eastern United States
PEST ALERT - Walnut Twig Beetle and Thousand Cankers Disease of Black Walnut
Pest Alert: Thousand Cankers Disease
Questions and Answers about Thousand Cankers Disease of Walnut
The Indiana Quarantine for Thousand Cankers Disease (TCD) of Black Walnut Trees
Thousand Cankers Disease & the Walnut Twig Beetle
Thousand Cankers Disease of Walnut (Geosmithia morbida)
Walnut Thousand Cankers Disease Alert
Walnut Twig Beetle and Thousand Cankers Disease: Field Identification Guide
The Dangers of Thousand Cankers Disease
Walnut twig beetle (Pityophthorous juglandis): The Documentary
Exotic and Invasive Pests: Thousand Cankers Disease and the Walnut Twig Beetle in California
Missouri Agriculture: Thousand Cankers Disease of Black Walnut
Thousand Cankers Disease / Walnut Twig Beetle