Pacific Northwest Research Station

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

Author: Barrett, James W.

Date: 1981

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

Station ID: RP-PNW-286

Description: 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

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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 Research Station. 13 p