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Filtering by: Subject Red alder -- Thinning -- Evaluation

Effects of planting density and thinning on growth, stem form, and crown recession in young red alder

Creator:

Lewis, Robert G. (Robert Gorden), 1959-

Abstract:

Stem growth, stem form development, and the dynamics of crown recession in young red alder (Alnus rubra Bong.) were studied by analyzing annual growth rings of stems and knots, annual height increments, projected crown areas, and branch diameters. Forty-one trees were sampled from three plantation spacing studies, representing ages 1...

Resource Type:

Masters Thesis
Thinning response in Alnus rubra and Arbutus menziesii : effects of spacing, light, and moisture

Creator:

Kim, Sang-kyun

Abstract:

In western Oregon, hardwood trees occupy 20% of the timberland but account for less than 1% of the timber harvest. Information about how to manage them effectively is limited. The objective of this study was to examine: 1) effect of thinning on tree growth, plant moisture stress, and crown cover...

Resource Type:

Masters Thesis
Natural fertilization of a heavily thinned Douglas-fir stand by understory red alder

Creator:

Berg, Alan B., Doerksen, Allan, and Oregon State University. Forest Research Laboratory

Resource Type:

Technical Report

Full Text:

4.8 15.1 Some time after thinning, an underst f red alder was established on the heavily thinned area
Comparative effects of precommercial thinning, urea fertilizer, and red alder in a site 11, coast Douglas-fir plantation

Creator:

Miller, Richard E., Obermeyer, Edmund L., and Anderson, Harry William

Abstract:

The authors varied the number of red alder retained with 300 Douglas-fir per acre on a high-quality site in coastal Oregon. Alder densities of 0, 20, 40, and 80 per acre were tested. The authors' fifth treatment eliminated nitrogen-fixing alder, but substantial nitrogen fertilizer. Treatment 6 had neither thinning nor...

Resource Type:

Technical Report