Skip to Main Content
Due to a lapse in federal funding, this USDA website will not be actively updated. Once funding has been reestablished, online operations will continue.
The black walnut resource in the United StatesAuthor(s): Stephen R. Shifley
Source: In: Michler, C.H.; Pijut, P.M.; Van Sambeek, J.W.; Coggeshall, M.V.; Seifert, J.; Woeste, K.; Overton, R.; Ponder, F., Jr., eds. Proceedings of the 6th Walnut Council Research Symposium; Gen. Tech. Rep. NC-243. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 168-176
Publication Series: General Technical Report (GTR)
Station: North Central Research Station
PDF: View PDF (299.87 KB)
DescriptionBetween 1989 and 1999 the total volume of black walnut (Juglans nigra L.) in the United States increased from 1.6 to 2.4 billion cubic feet. Saw log volume (International ¼-inch scale) increased from 4.3 to 7.2 billion board feet. Increases occurred in most states; however, in Michigan, Ohio, Virginia, Pennsylvania, and Kansas black walnut volumes decreased or remained nearly constant and/or mean tree quality appeared to decrease. National forest inventory data is available online and can readily be queried to summarize and map characteristics of black walnut and other species by individual states, groups of counties, or other geographic areas. The majority of black walnut trees occur in natural stands in association with other fine hardwoods. On average black walnut comprises about 11% of the total volume in stands where it occurs. Thus, opportunities to apply silvicultural treatments to increase walnut volume or value in natural stands usually also provide the option to do the same for other associated hardwood species.
- 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.
CitationShifley, Stephen R. 2004. The black walnut resource in the United States. In: Michler, C.H.; Pijut, P.M.; Van Sambeek, J.W.; Coggeshall, M.V.; Seifert, J.; Woeste, K.; Overton, R.; Ponder, F., Jr., eds. Proceedings of the 6th Walnut Council Research Symposium; Gen. Tech. Rep. NC-243. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 168-176
- Status of black walnut (Juglans nigra L.) in the Eastern United States in light of the discovery of thousand cankers disease
- Black Walnut
- Genetic homogeneity in Juglans nigra(Juglanaceae) at nuclear microsatellites
XML: View XML