Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (2.1 MB)

Title: Interplanting woody nurse crops promotes differential growth of black walnut saplings

Author: Dawson, J. O.; Van Sambeek, J. W.;

Date: 1993

Source: In: Gillespie, Andrew R.; Parker, George R.; Pope, Phillip E.; Rink, George: eds. Proceedings of the 9th Central Hardwood Forest Conference; Gen. Tech. Rep. NC-161. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station: 455-464

Publication Series: General Technical Report (GTR)

   Note: This article is part of a larger document. View the larger document

Description: Interplanting black walnut (Juglans nigra) with four different nitrogen fixing, woody nurse crops (Alnus glutinosa, Elaeagnus umbellata, E. angustifolia or Caragana arborescens) increased annual walnut height and stem diameter (dbh) growth overall by as much as 50% and doubled or tripled crown volume compared to all-walnut check plots during a 14-year period after plantation establishment. Walnut interplanted with non-nitrogen fixing, woody nurse crops (Lonicera maackii, Acer ginnala, or Pinus sylvestris) in a companion experiment of 12 years duration did not grow significantly more than walnut in check plots. Experimental plantings were established adjacent to one another in 1978 and 1980 in central Illinois. A split-split plot design divided by replications and sites was employed in both experiments with equal numbers of walnut and the interplanted nurse species intermixed alternately at a 3 x 3-m overall spacing in plots. Walnut trees at a floodplain site had less mortality and significantly greater growth than walnut trees at an upland site. Results indicate that nitrogen fixing nurse crops can be superior to non-nitrogen fixing nurse crops in promoting walnut growth, specifically confirming the possible importance of nitrogen fixation relative to other nurse crop benefits in promoting walnut growth on sites considered good to marginal for black walnut.

Publication Notes:

  • 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.
  • This publication may be available in hard copy. 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, shobrla@fs.fed.us if you notice any errors which make this publication unusable.

XML: View XML

Citation:


Dawson, J. O.; Van Sambeek, J. W. 1993. Interplanting woody nurse crops promotes differential growth of black walnut saplings. In: Gillespie, Andrew R.; Parker, George R.; Pope, Phillip E.; Rink, George: eds. Proceedings of the 9th Central Hardwood Forest Conference; Gen. Tech. Rep. NC-161. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station: 455-464

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.