Twenty-year growth of thinned and unthinned ponderosa pine in the Methow Valley of northern Washington.

James W. Barrett

doi:10.2737/PNW-RP-286

Treesearch

Twenty-year growth of thinned and unthinned ponderosa pine in the Methow Valley of northern Washington.

Informally Refereed

Authors:

James W. Barrett

Year:

1981

Type:

Research Paper

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RP-286

Source:

Res. Pap. PNW-RP-286. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 13 p

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Abstract

Diameter, height and volume growth, and yield of thinned and unthinned plots are given for a suppressed, 47-year-old stand of ponderosa pine (Pinus ponderosa Dougl. ex Laws.) in the Methow Valley of northern Washington that averaged about 3 inches in diameter and 23 feet tall before thinning. Considerations are discussed for choosing tree spacing in a precommercial thinning.

Keywords

Thinning effects, increment, stand density, improvement cutting, ponderosa pine, Pinus ponderosa

Citation

Barrett, James W. 1981. Twenty-year growth of thinned and unthinned ponderosa pine in the Methow Valley of northern Washington. Res. Pap. PNW-RP-286. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 13 p