Skip to Main Content
Fungi associated with stem cankers and coincidental scolytid beetles on declining hickory in the upper midwestAuthor(s): Jennifer Juzwik; Linda Haugen; Ji-Hyun Park; Melanie Moore
Source: In: Jacobs, Douglass F.; Michler, Charles H., eds. 2008. Proceedings, 16th Central Hardwood Forest Conference; 2008 April 8-9; West Lafayette, IN. Gen. Tech. Rep. NRS-P-24. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 476-482.
Publication Series: Other
Station: Northern Research Station
PDF: View PDF (195.03 KB)
DescriptionHigher than expected levels of hickory decline and mortality have recently been reported by Forest Health Monitoring, USDA Forest Service, on Carya spp. in Iowa, Maryland, Missouri, New York, Pennsylvania, and West Virginia. Widespread mortality of hickory has historically been attributed to outbreaks of the hickory bark beetle (Scolytus quadrispinosus) during extended periods of drought. Results of a preliminary survey conducted in Iowa, Minnesota, and Wisconsin during 2006 commonly found 1) a recently described fungus (Ceratocystis smalleyi) associated with bleeding spots and lesions on Carya cordiformis; 2) a fungus(Fusarium solani) with no known report of causing cankers on Carya species isolated from sunken, annual cankers; and 3) the fungi (Phomopsis spp.), which are commonly cited as the cause of Phomopsis stem and branch galls. We hypothesize that hickory mortality in these states is due to a decline complex of interacting predisposing, triggering, and contributing factors whose biotic agents are interchangeable.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationJuzwik, Jennifer; Haugen, Linda; Park, Ji-Hyun; Moore, Melanie. 2008. Fungi associated with stem cankers and coincidental scolytid beetles on declining hickory in the upper midwest. In: Jacobs, Douglass F.; Michler, Charles H., eds. 2008. Proceedings, 16th Central Hardwood Forest Conference; 2008 April 8-9; West Lafayette, IN. Gen. Tech. Rep. NRS-P-24. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 476-482.
- Additional pest surveyed: hickory decline
- Biotic agents responsible for rapid crown decline and mortality of hickory in northeastern and north central USA
- Multiple Ceratocystis smalleyi infections associated with reduced stem water transport in bitternut hickory
XML: View XML