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The biologies of predators (Coleoptera: Cleridae) of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytidae), in western Oregon

Creator:: Cowan, Bruce Dudley
Abstract:: Six species of Cleridae, including Enoclerus spegeus Fabricius, E. lecontei Wolcott, E. schaefferi (Barr), E. eximius Mannerheim, Thanasimus undatulus Say, and an undescribed species of Enoclerus, were found on Douglas-fir in western Oregon. E. sphegeus was the only clerid of the six species studied which was primarily associated with the...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Bruce Dudley Cowan for the M. S. in Entomology (Name) (Degree) (Major) Date

Winter hardiness in common wheat as measured by cold chamber tests

Creator:: Clark, George William
Resource Type:: Masters Thesis
Full Text:: chamber tests WINTER HARDINESS IN COM)N WHFÀT AS MEASURED BY COLD CHtJ4BER TESIS OEOIE WILLIAM CIARX

Some factors affecting hybridization of tall fescue (Festuca Arundinacea, Screb.) under polyethylene covered enclosures

Creator:: Bray, Donald William
Resource Type:: Masters Thesis
Full Text:: tops i Self-sterility data and geiiotye numbers from Dr. J. R. Cowan: unpublished data. 15 I i

Renovating Alta fesque for seed production

Creator:: Furtick, William Ralph, 1927-
Resource Type:: Masters Thesis
Full Text:: RENOVAING ALTA FESCUE FOR SEED PRODUCTION by WILLIAM

Germination potential in monogerm seed of Beta vulgaris L.

Creator:: TeKrony, Dennis M.
Abstract:: The objective of this study was to investigate the low seed germination of 12 varieties of Oregon grown monogerm sugar beet, Beta vulgaris L., using several methods to determine the germination potential. The methods were: (1) X-ray radiograph examination, (2) standard laboratory germination following official rules, (3) laboratory germination by...
Resource Type:: Masters Thesis
Full Text:: manuscript. Dr. J. Ritchie Cowan for his advice and guidance throughout my graduate program. Drs

Recovering Lost Ground : Effects of Soil Burn Intensity on Nutrients and Ectomycorrhiza Communities of Ponderosa Pine Seedlings

Creator:: Cowan, Ariel D.
Abstract:: Fuel accumulation and climate shifts are predicted to increase the frequency of high-severity fires in ponderosa pine (Pinus ponderosa Dougl. ex Laws) forests of central Oregon. The combustion of fuels containing large downed wood can result in intense soil heating, alteration of soil properties, and mortality of microbes. Previous studies...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Ariel D. Cowan for the degree of Master of Science in Forest

A comparison of plant characteristics of annual ryegrass (Oregon), Lolium multiflorum Lam., and Linn perennial ryegrass, Lolium perenne L.

Creator:: Rosell, C. H.
Abstract:: Studies were conducted to establish some characters which could be used, either in the field or in the laboratory, to differentiate between annual ryegrass (Oregon), Lolium multiflorum Lam. , and Linn perennial ryegrass, Lolium perenne L. Vernation, percentage of glumes covering the spikelets, and height of seedlings seem to be...
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy (Signature) J. Ritchie Cowan Studies were conducted to establish some characters

Breeding habitat of harlequin ducks in Prince William Sound, Alaska

Creator:: Crowley, David W.
Abstract:: Breeding habitat of Harlequin ducks (Histrionicus histrionicus) was studied in eastern Prince William Sound, Alaska, during 1991 - 1993. Streams in Prince William Sound were surveyed for Harlequin ducks and monitored with mist nets. Physical characteristics of 24 Harlequin breeding streams were compared to those of 24 streams not used...
Resource Type:: Masters Thesis
Full Text:: Breeding Habitat of Harleguin Ducks in Prince William

Dry matter and protein heritability estimates in tall fescue (Festuca arundinacea, Schreb.)

Creator:: Frakes, Rodney Vance, 1930-
Resource Type:: Masters Thesis
Full Text:: grateful to Dr. J. R. Cowan for his encouragement and guidance during the work leading to this theai

The effect of fertilizers on the yield and quality of fiber flax produced under irrigation

Creator:: Puri, Yesh Pal
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDG-EI4ENT The author wishea to express his sincere appreciation to Dr. J. R. Cowan for his

ScholarsArchive@OSU

The biologies of predators (Coleoptera: Cleridae) of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytidae), in western Oregon

Winter hardiness in common wheat as measured by cold chamber tests

Some factors affecting hybridization of tall fescue (Festuca Arundinacea, Screb.) under polyethylene covered enclosures

Renovating Alta fesque for seed production

Germination potential in monogerm seed of Beta vulgaris L.

Recovering Lost Ground : Effects of Soil Burn Intensity on Nutrients and Ectomycorrhiza Communities of Ponderosa Pine Seedlings

A comparison of plant characteristics of annual ryegrass (Oregon), Lolium multiflorum Lam., and Linn perennial ryegrass, Lolium perenne L.

Breeding habitat of harlequin ducks in Prince William Sound, Alaska

Dry matter and protein heritability estimates in tall fescue (Festuca arundinacea, Schreb.)

The effect of fertilizers on the yield and quality of fiber flax produced under irrigation

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