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Author : Marshall D. Murray
Publisher : Unknown
Page : 20 pages
File Size : 54,6 Mb
Release : 1986
Category : Douglas fir
ISBN : MINN:31951D029952396
Author : Marshall D. Murray
Publisher : Forgotten Books
Page : 26 pages
File Size : 43,8 Mb
Release : 2018-09-16
Category : Business & Economics
ISBN : 036507229X
Excerpt from Early Survival and Growth of Planted Douglas-Fir With Red Alder in Four Mixed Regimes Keywords: Silvicultural systems, mixed stands, competition (plant), nitrogen fixation, Douglas-fir, Pseudotsuga menziesii, red alder, Alnus rubra. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author : Louise De Montigny,Gordon Donald Nigh
Publisher : B.C. Ministry of Forests
Page : 24 pages
File Size : 43,9 Mb
Release : 2007
Category : Douglas fir
ISBN : MINN:31951D02398844G
Decisions about planting mixtures require an understanding of the survival and growth rates of the different species when grown together at different spacings; too many trees of either species may result in volume loss to overcrowding and mortality. The experiment described in this report examines the effects on growth and development of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and western redcedar (Thuja plicata Donn ex D. Don in Lamb) after 14 years when grown at 500, 1000, or 2000 stems per hectare in Douglas-fir-western redcedar mixes of 1:0, 1:1, 1:3, and 0:1. Survival and height, diameter at breast height (dbh), volume, and crown growth were measured.--Document.
Author : Louise De Montigny
Publisher : Unknown
Page : 12 pages
File Size : 46,6 Mb
Release : 2015
Category : Douglas fir
ISBN : OCLC:933591819
Author : Anonim
Publisher : Unknown
Page : 36 pages
File Size : 51,5 Mb
Release : 2005
Category : Douglas fir
ISBN : MINN:31951D02977808V
Five randomly assigned treatments were used to quantify effects of adding varying numbers of red alder (Alnus rubra Bong.) or nitrogen (N) fertilization on growth of a 10-year-old conifer plantation at a medium quality site in the western Washington Cascade Range. Zero, 20, 40, and 80 alder trees per acre were retained along with about 300 conifers per acre. Nearly all conifers were coast Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco). A fifth treatment substituted N fertilizer for N-fixing alder. Changes in average tree height, and in numbers of trees, basal area, and volume per acre between plantation ages of 10 and 27 are compared. In pure conifer plots, gross volume growth averaged 26 percent greater on fertilized than nonfertilized plots, indicating measurable benefits of additional N. On both fertilized and nonfertilized plots, an average of 13 percent of the original conifers died. Retaining 20, 40, or 80 alder per acre (7, 13, and 27 percent of the associated conifer trees per acre, respectively) was associated with reduced numbers of Douglas-fir by about 19, 5, and 17 percent, respectively, in the next 17 years. Mortality and growth of Douglas-fir were not related to alder density, but losses of Douglas-fir were especially large on plots where relatively large red alder (20 per acre) were retained. Neither total stand nor conifer yields were changed by retaining alder. Additional comparisons are needed at other locations, especially those with known N deficiency.
Author : W. Lopushinsky
Publisher : Unknown
Page : 28 pages
File Size : 49,7 Mb
Release : 1992
Category : Douglas fir
ISBN : MINN:31951D02995989Z
Author : Constance A. Harrington
Publisher : Unknown
Page : 20 pages
File Size : 49,6 Mb
Release : 1986
Category : Red alder
ISBN : MINN:31951D02995231M
Author : Constance A. Harrington
Publisher : Unknown
Page : 8 pages
File Size : 49,5 Mb
Release : 1984
Category : Red alder
ISBN : MINN:319510029368438
Author : Anonim
Publisher : Unknown
Page : 20 pages
File Size : 47,5 Mb
Release : 1992
Category : Red alder
ISBN : MINN:31951D029959881
Author : Kevin C. Peeler,Dean S. DeBell
Publisher : Unknown
Page : 8 pages
File Size : 48,9 Mb
Release : 1987
Category : Red alder
ISBN : MINN:31951D02995433A
Author : Donald L. Reukema
Publisher : Unknown
Page : 580 pages
File Size : 50,9 Mb
Release : 1965
Category : Douglas fir
ISBN : STANFORD:36105119572514
Author : Anonim
Publisher : Unknown
Page : 52 pages
File Size : 55,8 Mb
Release : 1993
Category : Douglas fir
ISBN : IND:30000098204476
Author : Anonim
Publisher : Unknown
Page : 29 pages
File Size : 44,5 Mb
Release : 2007
Category : Black bear
ISBN : LCCN:2007395126
Author : Carl M. Berntsen
Publisher : Unknown
Page : 28 pages
File Size : 43,5 Mb
Release : 1961
Category : Conifers
ISBN : MINN:31951D02889912R
Author : Anonim
Publisher : Unknown
Page : 196 pages
File Size : 48,6 Mb
Release : 1983
Category : Red alder
ISBN : MINN:31951D029645016
Overzicht van publikaties met samenvattingen tot en met mei 1978 over de rode els (Alnus rubra Bong,) uit de databestanden BIOSIS REVIEWS, CAB, CAIN, CHEMCON, PAPERCHEM en CRIS
