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Publication Information

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Title: Dominant Douglas-fir respond to fertilizing and thinning in southwest Oregon

Author: Miller, Richard E.; Williamson, Richard L.;

Date: 1974

Source: Res. Note PNW-RN-216. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 8 p

Publication Series: Research Note (RN)

Description: In 30-year-old, Site IV Douglas-fir in southwest Oregon, fertilizing increased average 4-year basal area growth of dominant trees by 57 and 28 percent on clay loam and sandy loam soils, respectively. Fertilizing with thinning increased growth by 94 and 132 percent over untreated growth. Thinning on clay loam soil increased growth by 53 percent. Treatment did not affect height growth on either soil.

Keywords: Douglas-fir, thinnings, fertilizer response (forest tree), forest management, soil management, basal area increment, southwest Oregon

Publication Notes:

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  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
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Citation:


Miller, Richard E.; Williamson, Richard L. 1974. Dominant Douglas-fir respond to fertilizing and thinning in southwest Oregon. Res. Note PNW-RN-216. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 8 p.

 


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