Thousand cankers pathway assessment: movement of Geosmithia sp. and Pityophthorus juglandis Blackman from the western into the eastern United States

Leslie Newton; Glenn Fowler; Alison Neeley; Robert Schall; Yu Takeuchi; Scott Pfister

Treesearch

Thousand cankers pathway assessment: movement of Geosmithia sp. and Pityophthorus juglandis Blackman from the western into the eastern United States

Informally Refereed

Authors:

Leslie Newton, Glenn Fowler, Alison Neeley, Robert Schall, Yu Takeuchi, Scott Pfister

Year:

2011

Type:

Other

Station:

Northern Research Station

Source:

In: McManus, Katherine A; Gottschalk, Kurt W., eds. 2010. Proceedings. 21st U.S. Department of Agriculture interagency research forum on invasive species 2010; 2010 January 12-15; Annapolis, MD. Gen. Tech. Rep. NRS-P-75. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 112.

Download (PDF 71 KB)

Download (PDF 71 KB): https://research.fs.usda.gov/download/treesearch/37644.pdf

Abstract

A newly recognized fungal canker disease of walnut, identified by state cooperators, may threaten the native range of eastern black walnut, Juglans nigra. The causal agent is a Geosmithia fungus (proposed name Geosmithia morbida) and the only known vector is the walnut twig beetle, Pityophthorus juglandis (WTB). The common name for the disease is "thousand cankers" due to the coalescing cankers surrounding multiple beetle entry points.

Parent Publication

Proceedings, 21st U.S. Department of Agriculture interagency research forum on invasive species 2010

Citation

Newton, Leslie; Fowler, Glenn; Neeley, Alison; Schall, Robert; Takeuchi, Yu; Pfister, Scott. 2011. Thousand cankers pathway assessment: movement of Geosmithia sp. and Pityophthorus juglandis Blackman from the western into the eastern United States. In: McManus, Katherine A; Gottschalk, Kurt W., eds. 2010. Proceedings. 21st U.S. Department of Agriculture interagency research forum on invasive species 2010; 2010 January 12-15; Annapolis, MD. Gen. Tech. Rep. NRS-P-75. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 112.