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 (614 KB bytes)

Title: Interactions among soil biology, nutrition, and performance of actinorhizal plant species in the H.J. Andrews Experimental Forest of Oregon.

Author: Rojas, N.S.; Perry, D.A.; Li, C.Y.; Ganio, L.M.;

Date: 2002

Source: Applied Soil Ecology. 19: 13-26

Publication Series: Scientific Journal (JRNL)

Description: The study examined the effect of Frankia, macronutrients, micronutrients, mycorrhizal fungi, and plant-growth-promoting fluorescent Pseudomonas sp. on total biomass, nodule weight, and nitrogen fixation of red aider (Alnus rubra) and snowbrush (Ceanothus velutinus) under greenhouse conditions. The soil samples were collected from a 10-year-old clearcut on the H.J. Andrews Experimental Forest, Oregon. Within the clearcut, four sampling points were selected along a slope gradient. Red alder and snowbrush plants were greenhouse-grown in a mix of sod-vermiculite-perlite (2:1:1) for 6 and 12 months, respectively. Plants were inoculated with Frankia and a fluorescent Pseudomonas sp. Some of the red alder were also inoculated with ectomycorrhizal Alpova diplophloeus, and some snowbrush with endomycorrhizal Glomus intraradix. There was no interaction between treatment and slope location for either species. There were significant treatment effects for red alder, but not for snowbmsh. Red alder seedlings given Frankia and macronutrients produced more biomass and had greater nitrogen fixation than seedlings grown without addtttons; adding A. diplophloeus increased nitrogen fixation by 33% over that obtained with Frankia plus macronutrients. Frankia, macronutrients, and the mycorrhizal fungus together increased nitrogen fixation by 136% over the control. Adding only micronutrients to Frankia and macronutrients, however, reduced nitrogen fixation by nearly one half: the presence of the mycorrhizal fungus appeared to buffer these negative effects. Pseudomonas inoculation did not affect any of the measured variables. Slope iocatlon of soil affected the two plant species differently. Red alder seedlings grown in upper slope soil had greater Nomass and nitrogen fixation than those grown m soil from the lower slope. In contrast, snowbrnsh plants had greater biomass, nodule weight, and nitrogen fixation when grown in bottom slope soil rather than on soil from any of the other slope positions.

Keywords: Frankia, red alder, snowbrush, actmorhizal plants, nitrogen fixation

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.

XML: View XML

Citation:


Rojas, N.S.; Perry, D.A.; Li, C.Y.; Ganio, L.M. 2002. Interactions among soil biology, nutrition, and performance of actinorhizal plant species in the H.J. Andrews Experimental Forest of Oregon. Applied Soil Ecology. 19: 13-26

 


 [ 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.