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Douglas-Fir from New Mexico More Outstanding than Other Sources Studied in Maryland

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Abstract:

Douglas-fir, represented by different seed sources from its natural range, has been studied in two research plantations in Maryland. In the Piedmont Plateau, 24 populations at age 5 varied in foliage turning brown (0% to 22%) which was associated with the longitude (r = 0.61) and the altitude (r = -0.48) of the seed source. At age 12 they varied in survival (6% to 94%), in height (0.9 m to 1.9 m), and in attraction for use as Christmas trees (0% to 19%), all inversely correlated with the northern latitude. In the Appalachian region, 20 sources at age 19 varied in survival (13% to 81%) and in height (1.5 m to 4.2 m), which was inversely correlated to the western longitude, and directly correlated with the altitude of the seed source. In both plantations, the most outstanding populations in survival, height, and attraction for use as Christmas trees were the two sources from Otero County, NM. North. J. Appl. For. 6:56-59, June 1989.

Document Type: Journal Article

Affiliations: Appalachian Environmental Laboratory, University of Maryland, Frostburg, MD 21532

Publication date: 1989-06-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
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