Pacific Northwest Research Station

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

Author: Reukema, Donald L.

Date: 1979

Source: Res. Pap. PNW-RP-253. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 21 p

Station ID: RP-PNW-253

Description: 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

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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 Research Station. 21 p