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Chapter 8 - Assessment and etiology of thousand cankers disease within the native range of black walnut (Juglans nigra)Author(s): Jennifer Juzwik; Melanie Moore; Geoffrey Williams; Matthew Ginzel
Source: Gen. Tech. Rep. SRS-250. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station
Publication Series: General Technical Report (GTR)
Station: Southern Research Station
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DescriptionThousand cankers disease (TCD) is caused by a fungus (Geosmithia morbida) vectored by the walnut twig beetle (WTB), Pityophthorus juglandis (Coleoptera: Curculionidae: Scolytinae). This pest complex was first described in Colorado where it has caused the widespread death of eastern black walnut (Juglans nigra) along the Front Range and throughout the Western United States (Tisserat and others 2009). In August 2010, TCD was found in Knoxville, TN—the first discovery of the disease within the native range of black walnut (Grant and others 2011). Since that time, six other States in the Midwest and East have detected the beetle or pathogen on black walnut trees: Virginia, Pennsylvania, North Carolina, Maryland, Ohio, and Indiana (Juzwik and others 2015, Seybold and others 2012).
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CitationJuzwik, Jennifer; Moore, Melanie; Williams, Geoffrey; Ginzel, Matthew. 2020. Chapter 8 - Assessment and etiology of thousand cankers disease within the native range of black walnut (Juglans nigra). In: Potter, Kevin M.; Conkling, Barbara L., eds. Forest health monitoring: national status, trends, and analysis 2019. Gen. Tech. Rep. SRS-250. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station: 169-178.
- Reproduction of walnut twig beetle in black walnut and butternut
- Status of black walnut (Juglans nigra L.) in the Eastern United States in light of the discovery of thousand cankers disease
- Eastern Black Walnut (Juglans nigra L.) Originating From Native Range Varies in Their Response to Inoculation With Geosmithia morbida
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