Fifty-year development of Douglas-fir stands planted at various spacings

Donald L. Reukema

doi:10.2737/PNW-RP-253

Treesearch

Fifty-year development of Douglas-fir stands planted at various spacings

Informally Refereed

Authors:

Donald L. Reukema

Year:

1979

Type:

Research Paper

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RP-253

Source:

Res. Pap. PNW-RP-253. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station

Download (PDF 1.67 MB)

Download (PDF 1.67 MB): https://research.fs.usda.gov/download/treesearch/5555.pdf

Abstract

A 51-yr record of observations in stands planted at six spacings, ranging from 4 to 12 ft, illustrates clearly the beneficial effects of wide initial spacing and the detrimental effects of carrying too many trees relative to the size to which they will be grown. Not only are trees larger, but yields per acre are greater at wide spacings.

Keywords

Plantation spacing (-growth, stand density, stand development, Douglas-fir, Pseudotsuga menziesii

Citation

Reukema, Donald L. 1979. Fifty-year development of Douglas-fir stands planted at various spacings. Res. Pap. PNW-RP-253. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 21 p