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Author : Marshall D. Murray
Publisher : Unknown
Page : 20 pages
File Size : 50,8 Mb
Release : 1986
Category : Douglas fir
ISBN : MINN:31951D029952396
Author : Marshall D. Murray
Publisher : Forgotten Books
Page : 26 pages
File Size : 54,5 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 : Anonim
Publisher : Unknown
Page : 690 pages
File Size : 49,8 Mb
Release : 1978
Category : Forests and forestry
ISBN : UCBK:C031917347
Author : Anonim
Publisher : Unknown
Page : 690 pages
File Size : 46,5 Mb
Release : 1986
Category : Forest products industry
ISBN : STANFORD:36105027086631
Author : Richard E. Miller
Publisher : Unknown
Page : 32 pages
File Size : 44,8 Mb
Release : 1999
Category : Douglas fir
ISBN : MINN:31951D02881907O
Author : Anonim
Publisher : Unknown
Page : 36 pages
File Size : 42,6 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 : Anonim
Publisher : Unknown
Page : 1108 pages
File Size : 50,6 Mb
Release : 1987
Category : Government publications
ISBN : UIUC:30112063914292
Author : Anonim
Publisher : Unknown
Page : 654 pages
File Size : 42,9 Mb
Release : 1987
Category : Government publications
ISBN : OSU:32435030431191
Author : Anonim
Publisher : Unknown
Page : 428 pages
File Size : 42,5 Mb
Release : 1989
Category : Electronic
ISBN : NWU:35556030828982
Author : United States. Forest Service. Pacific Southwest Region
Publisher : Unknown
Page : 428 pages
File Size : 45,8 Mb
Release : 1989
Category : Afforestation
ISBN : UCD:31175028858499
Author : Anonim
Publisher : Unknown
Page : 668 pages
File Size : 46,5 Mb
Release : 1999
Category : Forest genetics
ISBN : OSU:32435061484960
Author : Malcolm L. Hunter
Publisher : Cambridge University Press
Page : 720 pages
File Size : 49,5 Mb
Release : 1999-06-10
Category : Nature
ISBN : 0521637686
Discusses the ways in which we can continue to benefit from forests, while conserving their biodiversity.
Author : Anonim
Publisher : Unknown
Page : 106 pages
File Size : 50,9 Mb
Release : 2014
Category : Forestry extension
ISBN : UCBK:C117564233
Author : Sybille Haeussler,David Coates,British Columbia. Ministry of Forests,Canada-British Columbia Forest Resource Development Agreement,Jean Mather,Canada/BC Economic & Regional Development Agreement,Canada. Forestry Canada
Publisher : Forestry Canada, 1990 [i.e. 1991]
Page : 294 pages
File Size : 44,6 Mb
Release : 1990
Category : Forest ecology
ISBN : WISC:89046841938
This publication summarizes the autecological characteristics of 35 vegetation species and provides information on how they respond to various silvicultural treatments now in use on forest lands. Information used in this report was gathered in an extensive search of ecological, silvicultural, and botanical literature, most of which originates in western Canada or western US. Information is given on description, distribution and abundance, habitat, growth and development, reproduction, pests, effects on crop trees, response to disturbance or management, and wildlife and range of each species, listed alphabetically by scientific name.
Author : Eileen M. Forestell Harvey,Gina H. Mohammed,T. L. Noland,Ontario. Ministry of Natural Resources,Ontario Forest Research Institute
Publisher : [Sault Ste. Marie] : Ontario, Ministry of National Resources
Page : 130 pages
File Size : 42,6 Mb
Release : 1993
Category : Competition (Biology)
ISBN : MINN:31951P00871073L
