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Filtering by: Subject Douglas fir -- Reproduction Remove constraint Subject: Douglas fir -- Reproduction Contributor advisor sim Newton, Michael Remove constraint Contributor advisor sim: Newton, Michael Resource Type Dissertation Remove constraint Resource Type: Dissertation

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Effects of herbaceous weed control on young Douglas-fir moisture stress and growth

Creator:

Preest, David Stanley

Abstract:

Profitable, even-aged forest management depends on the early establishment and rapid growth of each new forest crop. These, in turn, require that the young trees have access to an adequate supply of native resources of moisture, nutrients and light. In Mediterranean-type climates, competition for soil moisture is the most serious...

Resource Type:

Dissertation
Underplanting and competition in thinned Douglas-fir

Creator:

Brandeis, Thomas James

Abstract:

Understory conifer regeneration needs to occur beneath conifer-dominated canopies if two-storied or uneven-aged structures are to be considered for western Oregon Coast Range stand management. To ensure adequate numbers of seedlings to meet stocking or habitat structure objectives, planting may be a solution. We undertook a multi-level study to determine...

Resource Type:

Dissertation
Internal moisture relations of standing Douglas-fir trees injected with organic arsenicals

Creator:

Holt, Harvey Allen

Abstract:

Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) ranging from 9.6 to 14.3 inches diameter breast height were treated with the organic arsenicals, monosodium methanearsonate (MSMA) and cacodylic acid. Treatments were applied at monthly intervals from February, 1967 to October, 1968, to ten to 25 trees each month. Treated trees were sampled in...

Resource Type:

Dissertation
Competitive interactions between Douglas-fir or ponderosa pine and whiteleaf manzanita

Creator:

White, Diane E.

Abstract:

Juvenile Douglas-fir, ponderosa pine, and whiteleaf manzanita growth in southwest Oregon varied with density of co-developing manzanita and presence of herbaceous cover. Plant xylem pressure potential and stomatal conductance of each species was responsive to competition-induced depletion of soil water. Rates varied among species. The best correlations with growth usually...

Resource Type:

Dissertation

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Academic Affiliation

Forest Management2
Forest Science2

Advisor

Newton, Michael4

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1971 to 1999

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Committee Member

Appleby, Arnold1
Appleby, Arnold P.1
Becker, B. William1
Berglund, Erwin1
Dilworth, John R.1
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Creator

Brandeis, Thomas James1
Holt, Harvey Allen1
Preest, David Stanley1
White, Diane E.1

Date

Date range begin – Date range end

Current results range from 1970 to 1999

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Decade

1990-19991
1980-19891
1970-19792

Degree Field

Forest Management2
Forest Science2

Degree Level

Doctoral4

Degree Name

Doctor of Philosophy (Ph.D.)4

Language

English [eng]4

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No3

Resource Type

Dissertation[remove]4

Rights Statement

Copyright Not Evaluated4

Subject

Douglas fir2
Arctostaphylos -- Growth1
Douglas fir -- Moisture1
Douglas fir -- Oregon -- Growth1
Moisture -- Measurement1
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