Browsing Theses, Dissertations and Student Research Papers (School of Forestry, pre - 1984) by Author "Walstad, John D."

Now showing items 1-3 of 3

Competitive effects of overtopping vegetation on Douglas-fir morphology in the Oregon Coast Range

Chan, Samuel S. (1984-03-02)

The response of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) saplings to various levels of brush overtopping when growing on three north-facing sites in the Oregon Coast Range was investigated for two consecutive y ...
Detection of 2,4-D herbicide damage using ground-based measurements : implications for remote sensing

McCreight, Richard W. (1983-04-19)

Spectral patterns of three brush species under the influence of herbicide treatment were investigated to evaluate the effectiveness of monitoring forest vegetation management using ground-based and remote sensing techniq ...
Effects of density stress and soil productivity on size, mortality and nitrogen fixation in artificial populations of seedling red alder (Alnus rubra Bong.)

Smith, Nicholas J. (1983-07-07)

Red alder (Alnus rubra Bong.) seedlings were grown at three initial spacings (8 x 8 cm, 4 x 4 cm, and 2 x 2 cm) and on two soil types (forest soil and river loam) under greenhouse and lath house conditions for 525 growi ...