Index Catalog // ScholarsArchive@OSU

The effect of winter grazing on production and dynamics of a Lolium perenne (L.)-Trifolium repens (L.) pasture

Creator:: Jaindl, Raymond G.
Abstract:: Perennial ryegrass (Lolium perenne) - white clover (Trifolium repens) hill-land pastures were grazed at different times in the winter to study the effect of time of winter grazing on plant response and forage production. The same pastures were grazed by sheep once in early December, January, February, March, or April...
Resource Type:: Dissertation
Full Text:: (L.) Pasture. Abstract approved: Redacted for Privacy Steven H. Sharrow Perennial ryegrass

Understory response to tree harvesting in pinyon-juniper woodlands

Creator:: Everett, Richard L.
Abstract:: Understory species associations and their association with tree species were examined on three intensively studied stands. We studied the chronosequence of understory species associated with different aged singleleaf pinyon (Pinus monophylla Torr. and Frem.) trees. Mid- to late pinyon-juniper understory succession was found to be more spatial than floristic in...
Resource Type:: Dissertation
Full Text:: -Juniper Woodlands A Abstract approved: Redacted for privacy Steven H. Sh-arrow Understory species

Growth responses of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) to defoliation

Creator:: Osman, Khalid Amir
Abstract:: The effect of defoliation intensity and season on Douglas-fir growth were studied in three replications in the Siuslaw National Forest during 1988-1990. Four intensities of defoliation were applied once in either spring or summer 1988. Stem diameter and canopy area were linearly inversely proportional to the level of defoliation. Defoliation...
Resource Type:: Dissertation
Full Text:: Privacy Steven H. Sharrow The effect of defoliation intensity and season on Douglas-fir growth were

Sheep grazing in Douglas-fir plantations of Oregon's Coast Range and its impact on big game habitat

Creator:: Rhodes, Bruce Douglas
Abstract:: As part of investigations to evaluate the suitability of sheep grazing in Douglas-fir (Pseudotsuga menziesii) plantations of Oregon's Coast Range, this research was designed to evaluate the effectiveness of sheep grazing in suppressing unwanted vegetation, determine seasonal variations in forage quality, and investigate the impact of sheep grazing on big...
Resource Type:: Masters Thesis
Full Text:: for Privacy Abstract approved: Steven m. narrow As part of investigations to evaluate the

Silvicultural impacts of sheep grazing in Oregon's Coast Range

Creator:: Leininger, Wayne C.
Abstract:: A three-year investigation was conducted during 1980-1982 to evaluate the potential of using herded sheep as a silvicultural tool to suppress brush in Douglas-fir (Pseudotsuga menziesii) plantations of Oregon's Coast Range. Sheep browsing of Douglas-fir was highest in May soon after bud break. Averaged over the 2 years of grazing,...
Resource Type:: Dissertation
Full Text:: have been possible without strong cooperation from Forest Service personnel, particularly Steven

Effect of defoliation treatments on forage quality, quantity, and species composition of a Lolium perenne (L.) - Trifolium subterraneum (L.) pasture

Creator:: Motazedian, Iraj
Abstract:: As part of investigations to adapt a suitable grazing system in western Oregon, this research was designed to monitor the effects of defoliation treatments on dry matter production, forage quality, regrowth after defoliation, and species composition of a Lolium perenne Trifolium subterraneum pasture for three consecutive growing seasons from 1980...
Resource Type:: Dissertation
Full Text:: Abstract approved: Steven H. Sharrow As part of investigations to adapt a suitable grazing system in

Impact of sheep density and grazing duration on forage use in tall fescue-subclover hill pasture

Creator:: Ali, Eltom E.
Abstract:: A study investigating the effect of sheep stocking density and grazing duration on forage intake, grazing efficiency, dietary selectivity and subsequent forage accumulation in tall fescue(Festuca arundinacea)- subclover(Trifolium subtaranium) pastures was conducted near Corvallis, Oregon during early and late spring in 1988 and 1989. Grazing treatments were 2, 6, and...
Resource Type:: Dissertation
Full Text:: : Steven H. Sharrow A study investigating the effect of sheep stocking density and grazing duration on

Spatial patterns of tree effects on pasture production in open canopied agroforests

Creator:: Harris, Norman Rex
Resource Type:: Masters Thesis
Full Text:: Pasture Production in Open Canopied Agroforests. Abstract approved: Steven H. Sharrow While successful

Evaluation of three sheep grazing systems on western Oregon hill pastures

Creator:: Warner, John Robert
Abstract:: Sheep live weights, herbage standing crop, and herbage quality are presented from a three-year grazing management study comparing set stocking, four-paddock rotational grazing, and four-paddock forward rotational grazing systems. In both rotational grazing and forward rotational grazing systems, sheep were sequentially moved from one paddock to the next every 5...
Resource Type:: Masters Thesis
Full Text:: SYSTEMS ON WESTERN OREGON HILL PASTURES Redacted for Privacy Abstract approved: Steven H. Sharrow

Effects of grazing management and tree planting pattern in a young Douglas-fir argoforest

Creator:: Carlson, Deirdre H.
Abstract:: A silvopastoral system using a Douglas-fir (Pseudotsuga menziesii) tree crop and subclover (Trifolium subterraneum) as a nitrogen-fixing forage crop was investigated near Corvallis, Oregon, during 1983-1985. Treatments included all possible combinations of three planting patterns (no trees, trees planted 2.5 m apart in a grid, and clusters of five trees...
Resource Type:: Masters Thesis
Full Text:: Privacy Steven H. Sharrow A silvopastoral system using a Douglas-fir (Pseudotsuga menziesii) tree crop

ScholarsArchive@OSU

The effect of winter grazing on production and dynamics of a Lolium perenne (L.)-Trifolium repens (L.) pasture

Understory response to tree harvesting in pinyon-juniper woodlands

Growth responses of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) to defoliation

Sheep grazing in Douglas-fir plantations of Oregon's Coast Range and its impact on big game habitat

Silvicultural impacts of sheep grazing in Oregon's Coast Range

Effect of defoliation treatments on forage quality, quantity, and species composition of a Lolium perenne (L.) - Trifolium subterraneum (L.) pasture

Impact of sheep density and grazing duration on forage use in tall fescue-subclover hill pasture

Spatial patterns of tree effects on pasture production in open canopied agroforests

Evaluation of three sheep grazing systems on western Oregon hill pastures

Effects of grazing management and tree planting pattern in a young Douglas-fir argoforest

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