Levels-of-growing-stock cooperative study in Douglas-fir: report no. 10—The Hoskins Study, 1963-83.

David D. Marshall; John F. Bell; John C. Tappeiner

doi:10.2737/PNW-RP-448

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Levels-of-growing-stock cooperative study in Douglas-fir: report no. 10—The Hoskins Study, 1963-83.

Informally Refereed

Authors:

David D. Marshall, John F. Bell, John C. Tappeiner

Year:

1992

Type:

Research Paper

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RP-448

Source:

Res. Pap. PNW-RP-448. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 68 p

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Download (PDF 3.58 MB): https://research.fs.usda.gov/download/treesearch/25646.pdf

Abstract

Results of the Hoskins LOGS study in western Oregon are summarized and management implications discussed through the fifth and final planned treatment period. To age 40 thinnings in this low site I Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stand resulted in large increases in diameter growth with reductions in basal area and volume growth and yield. Growth was strongly related to the level of growing stock. Culmination of cubic-foot mean annual increment does not appear to be near for any of the treatments.

Keywords

growing stock (-increment/yield, increment) growing stock management, stand density, thinnings, Douglas-fir, Pseudotsuga menziesii, western Oregon, Oregon, series--Douglas-fir LOGS

Citation

Marshall, David D.; Bell, John F.; Tappeiner, John C. 1992. Levels-of-growing-stock cooperative study in Douglas-fir: report no. 10—The Hoskins Study, 1963-83. Res. Pap. PNW-RP-448. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 68 p