Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub


    A thinning trial was established in 1962 in a 7-year-old red alder stand in northwestern Washington. Spacings were 8 x 8 ft (dense), 12 x 12 it (intermediate), and 16 x 16 ft (open). The effect of early thinning on growth and stem form was measured in 1982, 20 years after spacing treatment. There was negligible tree lean and sweep in open and intermediate stands except in areas affected by trees leaning into the plots from outside. Bled alder trees generally appear to be displaced horizontally by competing trees toward nearby open areas. Production of straight, nonleaning trees can be achieved by wide and even spacing at an early age. Trees grown in this fashion will yield significantly more high-quality wood per unit volume than can be obtained from trees in unmanaged stands.

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • 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.


    Bormann, Bernard T. 1985. Early wide spacing in red alder (Alnus rubra Bong.): effects on stem form and stem growth. Res. Note PNW-RN-423. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 8 p


    Google Scholar


    thinning effects, plantation spacing (-growth, stem form, precommercial thinning

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page