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Tuesday, May 12, 2020 | History

1 edition of Potential production in thinned Douglas-fir plantations found in the catalog.

Potential production in thinned Douglas-fir plantations

Bruce, David

Potential production in thinned Douglas-fir plantations

by Bruce, David

  • 157 Want to read
  • 3 Currently reading

Published by Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture in Portland, Or .
Written in English

    Subjects:
  • Douglas fir.,
  • Forests and forestry -- Measurement.,
  • Forest thinning.

  • Edition Notes

    Statementby David Bruce.
    SeriesUSDA Forest Service research paper PNW -- no. 87., USDA Forest Service research paper PNW -- 87.
    ContributionsPacific Northwest Forest and Range Experiment Station (Portland, Or.)
    The Physical Object
    Pagination22 p. :
    Number of Pages22
    ID Numbers
    Open LibraryOL15054009M

    The potential for pruning to enhance clearwood production in Pinus radiata is well-established. For other softwood species grown in Australia the evidence in favour of pruning is also strong: for example, 17 year old pruned and thinned Cupressus macrocarpa had a recovery of high-grade timber from the pruned butt log of 72% compared to just 13%. There is no particular threat to conifer plantations as a whole. However, the end of the coal industry and the closure of downstream hardboard manufacturing plants had local implications for soft wood production. • Many of the species listed in are dependent on a particular age of timber and therefore a clear-felling Size: 25KB.

    Wood production: Ponderosa pine is one of the most important timber species in the western United States. The annual production of ponderosa pine is ranked third behind Douglas fir and hem-fir. Approximately billion board feet of ponderosa pine lumber is produced annually out of Oregon, the largest supplier in the United States. It is popularlyFile Size: 96KB. Douglas fir is a big tree that grows to over feet when mature. The straight trunk can grow to four feet in diameter and sometimes even twice that wide. The trees are long lived as well. When you are planting a Douglas fir tree, keep in mind that these giants often live years.

    To account for the potential correlation between plots on transects and within stands, we used a mixed model that included planted Douglas-fir basal area, site index (King Table 1. Summary information for study sites. Plantation ages refer to years since planting and site index (SI) is measured in meters at 50 years (King ). PRUNING Natural pruning in Douglas fir is a very slow process and, in general, there is no appreciable volume of clear wood in trees under one hundred years old. Natural pruning is most effective in dense stands, as it is stimulated by restriction of light to the lower part of the crown. We find that these conditions, in stands of average density, cause the.


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Potential production in thinned Douglas-fir plantations by Bruce, David Download PDF EPUB FB2

Get this from a library. Potential production in thinned Douglas-fir plantations. [David Bruce; United States. Department of Agriculture.; Pacific Northwest Forest. Download this stock image. Potential production in thinned Douglas-fir plantations. Douglas fir; Forests and forestry Mensuration; Forest thinning.

Another means of judging thinning intensity is by comparison of numbers of stems per acre in the middle of the thinning cycles (fig. These figures alone could have little meaning since they do not specify size of tree. Bruce, D. Potential Production in Thinned Douglas-fir Plantations.

Pacific Northwest Forest and Range Experiment Station, U.S.D.A. Forest Service, Research Paper PNW Pacific Northwest Forest and Range Experiment Station, Portland. Google ScholarCited by: Pseudotsuga menziesii is an evergreen conifer species in the pine Potential production in thinned Douglas-fir plantations book, is native to western North America and is known as Douglas fir, Douglas-fir, Oregon pine, and Columbian pine.

Despite its common name, it is not a true fir (i.e. it is not a member of the genus Abies).There are three varieties: coast Douglas-fir (P. menziesii var. menziesii), Rocky Mountain Douglas-fir (P Clade: Tracheophytes.

thinned, and one was in an area that would not be thinned. The physical characteristics of all three plots are much the same. Eleva­ tions are about 1, feet, slopes are less than 20 percent, and as­ pects are. a i n 1 y easterly and southeasterly. The soil is of the Blyn series, which includes well­.

Bibliography Even-aged Growth and Yield ( entries) 1. “Potential Production in Thinned Douglas-fir Plantations.” U.S.D.A.

Forest Service, Research Paper PNW () “Growth and Yield of Thinned Loblolly Pine Plantations in Loessial Soil Areas.” U.S.D.A. Forest Service, Mississippi Agricultural and Forestry Experiment. A plantation is the large-scale estate meant for farming that specializes in cash crops that are grown include cotton, coffee, tea, cocoa, sugar cane, opium, sisal, oil seeds, oil palms, fruits, rubber trees, and forest trees.

Protectionist policies and natural comparative advantage have sometimes contributed to determining where plantations are located. Tree vigour and the susceptibility of Douglas fir to Armillaria root disease 45 from leaf area (LA = x sapwood area WARING et al. ) and biomass estimated from d.b.h.

based on equations for Douglas fir proposed by GHOLZ et al. Growth Efficiency was calculated as: GE = (biomass year 2 - biomass year 1)/LA year 1 x years.

DF A year Douglas-fir rotation; no commercial thin. (30 mbf & 70 tons) DF A year Douglas-fir rotation with commercial thin. (40 mbf & tons) DFE.

A year Douglas-fir rotation with commercial thin and a $/mbf export premium on 20% of the log volume at final harvest. Douglas-fir plantations in this region, especially those sustain-ing black-stain root disease.

In this paper, we describe the influence of time of precommercial thinning on the immigration and activity of H. nigrinus, P. fasciatus, and S. carinatus within plantations of Douglas-fir.

Materials and methods. Ali R. Esteghlalian, John N. Saddler, in Progress in Biotechnology, Protein Adsorption. Adsorption experiments on the lignaceous and bleached steam-exploded Douglas fir substrates were carried out in ml centrifuge tubes containing g (dry weight) of the substrate in 15 ml of M sodium acetate buffer (pH ).

Different volumes of Celluclast (20, 50,fir plantations for increased biodiversity and economicsPilz and Molina ).1 The potential of intensively managed Douglas-fir forests to support biodiversity is also becoming of greater interest.

Increased biodiversity in these stands thinned, or harvested, prior to the last inventory taken 10 years.

Stem and Branch Diameter Response in Pruned Douglas-fir Plantations (Pseudotsuga menziesii var. menziesii): Implications for Volume and Clear Wood Production in the U.S.

Pacific Northwest John W. Kirby A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science University of Washington Committee.

ELSEVIER Forest Ecology and Management 91 () Forest Ecology and Management Simulated stand characteristics and wood product yields from Douglas-fir plantations managed for ecosystem objectives R.

James Barbour a*, Stuart Johnston b, John P. Hayes e, Gabriel F. Tucker d a USDA Forest Service, Pacific Northwest Research Station, P.O. BoxPortland, ORUSA Cited by: Mechanisms of Genetic Variation in Productivity of Young Douglas-fir Plantations A Project of the Western Regional Agenda Program Paul Anderson, PNW Research Forester, Corvallis, OR Brad St.

Clair, PNW Research Geneticist, Corvallis, OR. biomass equations for Douglas-fir in 5-year-old (Devine et al. ) and year-old (Espinosa Bancalari and Perry ) plantations. Combining data from all known published studies to date, Jenkins et al.

() created a general equation predicting total-tree Douglas-fir biomass from by: 7. The mature Douglas-fir trees for SG showed a slow decreasing century-long growth trend similar to that of mountain pine (Pinus mugo Turra) trees in the Swiss National Park which were in response.

Growth response of unthinned and thinned Douglas-fir stands to single and multiple applications of nitrogen Article in Canadian Journal of Forest Research 20(3) February with 25 Reads. The Environmental Benefits of Forest Plantations. Clark S.

Binkley. 2 February Conservation of the world’s forests is a most important and pressing contemporary problem. Of particular concern are those distant, remote forests where the direct effects of industrialized human activities are, at the moment, still small.

CHRISTMAS TREE WEED CONTROL APPLICATION HERBICIDE MOA APPLICATION RATE/ACRE REMARKS & PRECAUTIONS Postemergence (continued) sethoxydim Segment 1L pt Grass control: Controls annual and perennial grasses in over-the-top spray in pine, fir, spruce, juniper, and cypress Christmas tree plantations.

A crop oil or surfactant is not Size: KB. The Coast Douglas Fir reaches maturity and begins producing cones at 12 to 15 years old. The male cones are usually about 2 centimeters long and are a yellow or dark red color.

The female cones are a bit larger at about 3 centimeters long and are green or dark red in color. The female cones have large bracts and can start pollination soon after.(2) The starting tree lists represented plantations with a to-tal age of 10 years and a Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) site index of m at a breast height age of 50 years (J.S.

Wilson, by e-mail). The user’s manual for ORGANON (Hann .Traveling across the state, you soon discover that Oregon is home to a wide range of trees.

There are 30 native coniferous species and 37 native species of broadleaf trees. Oregon varies greatly in terms of elevation, temperature, wind, rainfall and soil composition. Combinations of all these factors help determine the dominant tree species of an area.