Skip to Main Content
Initial thinning in red pine plantations.Author(s): John H. Cooley
Source: Research Paper NC-35. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Publication Series: Research Paper (RP)
Station: North Central Research Station
PDF: View PDF (1012.68 KB)
DescriptionResponse to thinning in six red pine plantations in Lower Michigan supported previous findings by showing basal area growth to vary little over a wide range of residual densities. Furthermore, the method of selecting trees for removal in the first thinning had little or no influence on basal area growth. However, the immediate effect of thinning on average stand diameter depends on thinning method and the proportion of the stand cut, and diameter growth after thinning depends on residual density. The residual densities tested range from 30 to over 200 square feet of basal area per acres. Thinning methods were (1) thinning from below, (2) thinning from above, (3) crown release (4) removal of alternate rows, (5) removal of every third row, and (6) thinning to increase growth on trees with the best potential for utility poles. It was concluded that initial thinning in plantations could reduce density to about 60 square feet of basal area per acre without reducing total yield and that these thinnings could be basically row thinnings.
- 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, email@example.com 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.
CitationCooley, John H. 1969. Initial thinning in red pine plantations. Research Paper NC-35. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
KeywordsPinus resinosa, red pine, thinning
- Relation of snowpack Accumulation to Red Pine Stocking
- The effect of initial number of trees per acre and thinning densities on timber yields from red pine plantations in the Lake States.
- Growth after thinning ponderosa and Jeffrey pine pole stands in northeastern California
XML: View XML