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Filtering by: Subject Forage plants -- Harvesting Remove constraint Subject: Forage plants -- Harvesting Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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Numerical classification of range vegetation and statistical analysis of its ecology

Creator:

Pyott, William Tucker, 1936-

Abstract:

The purpose of the research was to computerize mathematical procedures for the analysis of range vegetation and environmental data. The specific objectives were as follows: 1. to develop and apply computer techniques to the classification of vegetation in order to provide a phytosociological framework within which to investigate the ecology...

Resource Type:

Dissertation

Full Text:

Vegetation Classification 7 The Dual Role of Plant Species 11 Determination of Vegetation Units 12
Some factors affecting the establishment and growth of improved forage species on Laughlin-like soils in western Oregon

Creator:

Valassis, Vlassios Thomas

Resource Type:

Dissertation

Full Text:

improved forage species on Laughlin-like soils in Western Oregon SOME FACTORS A'FECTING THE ESTABLISHMENT
Competition among three pasture species under different levels of soil nitrogen and light intensity

Creator:

Wilson, Donald Benjamin

Resource Type:

Dissertation

Full Text:

, and to Mr. R. 1'. Peake, Head, Forage Crops Section, for making facilities available; to Mr. E
The effects of CIPC, monuron and 2,4-D herbicides on yield, crude protein and nitrate nitrogen content of four forage-crop species

Creator:

Furtick, William Ralph, 1927-

Resource Type:

Dissertation

Full Text:

, from the tall fescue forage breeding nursery were startod as single stems in plant bands during July
Economics of increased hay production by use of nitrogen fertilizer on mountain meadows in the Harney Basin Oregon

Creator:

Nelson, Michael

Resource Type:

Dissertation
Vegetation changes of communities containing medusahead (Taeniatherum asperum (Sim.) Nevski) following herbicide, grazing, and mowing treatments

Creator:

Turner, Robert Bruce

Abstract:

Studies were conducted from 1962 to 1966 to investigate the effectiveness of several practices in manipulating medusahead (Taeniatherum asperum (Sim. ) Nevski) infested and/or dominated ecosystems by releasing competition in favor of perennial grasses. Several herbicide treatments were evaluated for selective control of medusahead and cheatgrass (Bromus tectorum L. )...

Resource Type:

Dissertation

Full Text:

, much of this area now-supports cheatgrass (Bromus tectorum) as the main forage plant. Many of these
Correlations between certain criteria of ruminant digestion in vivo and in vitro

Creator:

Bowden, David Merle

Resource Type:

Dissertation

Full Text:

forage crops. The plant 3 breeder must select the most desirable genotypes 1irom in- formation
Use of livestock to improve the quality of elk winter range forage in northeastern Oregon

Creator:

Clark, Patrick Eugene

Abstract:

The effects of late spring defoliation on the winter forage quality of bluebunch wheatgrass (Agropyron spicatum [Pursh] Scribn. & Smith), Idaho fescue (Festuca idahoensis Elmer) and elk sedge (Carex geyeri Boott) and the response of wintering Rocky Mountain elk (Cervus elaphus nelsoni Bailey) to changes in winter range forage quality...

Resource Type:

Dissertation

Full Text:

culms/plant for Idaho fescue in grassland and ecotone vegetation types 109 5.4 Forage quality of
The public forage pricing implications of public/private market interdependence

Creator:

Collins, Alan

Resource Type:

Dissertation

Full Text:

Public Forage Pricing Implications of Public/Private Market Interdependence Abstract approved
Salt tolerance of certain forage crops

Creator:

Ahi, Sadegh Madjidi

Resource Type:

Dissertation

Full Text:

Salt tolerance of certain forage crops AN ABSTRACT OF

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Academic Affiliation

Rangeland Resources5
Farm Crops3
Range Management3
Agricultural Economics1
Agriculture and Resource Economics1
more Academic Affiliations »

Advisor

Hedrick, D. W.4
Krueger, William C.2
Poulton, Charles E.2
Bedell, Thomas E.1
Castle, Emery N.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1937 to 2017

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Committee Member

Johnson, Douglas2
Poulton, C. E.2
Vavra, Martin2
Anderson, Nicole P.1
Ballerstedt, Peter1
more Committee Members »

Creator

Ahi, Sadegh Madjidi1
Ali, Eltom E.1
Angsumalee, Duangporn1
Bedell, Thomas E.1
Bowden, David Merle1
more Creators »

Date

Date range begin – Date range end

Current results range from 1935 to 2016

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Decade

2010-20191
2000-20091
1990-19994
1980-19891
1970-19791
1960-19696
1950-19593
1930-19391

Degree Field

Range Management5
Rangeland Resources4
Farm Crops3
Agricultural Economics1
Agricultural and Resource Economics1
more Degree Fields »

Degree Level

Doctoral18

Degree Name

Doctor of Philosophy (Ph.D.)[remove]18

File Format

application/pdf1

Language

English [eng]18

License

All rights reserved2

Non-Academic Affiliation

Oregon State University. Graduate School18

Peer Reviewed

No17

Resource Type

Dissertation18

Rights Statement

Copyright Not Evaluated16
In Copyright2

Subject

Forage plants -- Oregon8
Forage plants5
Alkali lands1
Artemisia1
Bluebunch wheatgrass1
more Subjects »

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