Index Catalog // ScholarsArchive@OSU

Plant biomass and nutrient distribution in a young Pseudotsuga menziesii forest ecosystem

Creator:: Webber, Bruce Douglas
Resource Type:: Dissertation
Full Text:: indebted to his major professor, Dr. C.T. Youngberg, for review of the manuscript and assistance given

Growth rate of wheat (Triticum aestivm L., var. Gaines) as a function of moisture stress and nitrogen supply

Creator:: Amujo, Stephen Jimo
Abstract:: The effect of moisture stress and nutrients on the rate of growth of wheat (Triticum aestivum L. Var. Gaines) seedlings was studied. A special apparatus in which the moisture stress of several perlite cells could be maintained constant by osmotic solutions was used. Predetermined amounts of nitrogen were added to...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for Privacy C. T. Youngberg The effect of moisture stress and nutrients on

Nutrient uptake by conifer seedlings as influenced by root CEC and competing species

Creator:: Schöne, Dieter Hans-Friedrich
Abstract:: The objectives of this study were to establish a suitable method for the measurement of the root cation-exchange capacity of conifer seedlings, and to examine possible influences of this root characteristic on nutrient absorption from a Bellpine soil under greenhouse conditions. The exchange sites of fresh, excised roots were saturated...
Resource Type:: Masters Thesis
Full Text:: wishes to express his appreciation to Dr. C. T. Youngberg who helped and advised on many occasions and

Some soil factors affecting snowbrush nodulation

Creator:: Scott, William
Resource Type:: Dissertation
Full Text:: Stratton for William Scott ACKNOWLEDGEMENT The author wishes to express his sincere thanks to Dr. C. T

Relationships of clay mineralogy to landscape stability in Western Oregon

Creator:: Taskey, Ronald D. (Ronald David), 1944-
Abstract:: Soil erosion by mass wasting is the major problem on forest lands of the Pacific Northwest, The clay fractions of soils from a large number of sites in Oregon's Western Cascades were characterized in order to determine the relationships of various clay materials to mass movements. Each site was either...
Resource Type:: Dissertation
Full Text:: encouragement which he provided during the course of the study. Thanks go to Dr. C. T. Youngberg for serving

Effect of phosphorus forms and fertilizer rates on mycorrhizal development on containerized seedlings

Creator:: Munson, Kenneth Richard
Resource Type:: Masters Thesis
Full Text:: L. laccata produced greater infection rates on both tree species than did C. graniforme. For

Morphology, genesis, and classification of soils forming in recent age tephra deposits from Mt. St. Helens volcano

Creator:: Johnson, Mark E.
Abstract:: The morphology, genesis, and classification of soils forming in multiple tephra deposits of recent age from Mt. St. Helens volcano in southwestern Washington Cascade Mountains was studied. Soils which occupied well drained and poorly drained positions on the landscape were characterized according to their morphology and the results of analyses...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for privacy C./ T. YoAgberg The morphology, genesis, and classification of

Root symbionts and soil microorganisms associated with actinorrhizal plants

Creator:: Rose, Sharon Lee
Abstract:: Symbiotic associations are established between non-leguminous (actinorrhizal) nitrogen-fixing flowering plants and two categories of microorganisms: mycorrhizal fungi and a filamentous actinomycete. The actinomydete induces nodule formation and produces nitrogenase, the enzyme responsible for the reduction of atmospheric nitrogen to a form available to higher plants. The mycorrhizal fungus is found...
Resource Type:: Dissertation
Full Text:: MYCORRHIZAE AND ACTINOMYCES S. L. Rose and C. T. Youngberg 21 ABSTRACT Mountain mahogany (Cercocarpus

Site quality of western hemlock and chemical characteristics of some western Oregon andic soils

Creator:: Meurisse, Robert Thomas
Resource Type:: Dissertation
Full Text:: for'Robert Thomas Meurisse ACKNOWLEDGEMENTS The author wishes to express his appreciation to Dr. C. T

Genesis of some soils in the central western Cascades of Oregon

Creator:: Brown, R. B.
Abstract:: Soils representative of several landscape units in the H. J. Andrews Experimental Forest, Western Cascade Range, were sampled, analyzed, and tentatively classified. Genetic inferences were drawn relating soils to landscape position and other factors of soil formation. Descriptive information and nutrient capital data were provided to support ecosystem modelling efforts...
Resource Type:: Masters Thesis
Full Text:: Grossnicklaus for Randall Barber Brown ACKNOWLEDGEMENT I thank Dr. Chester T. Youngberg for taking up my

ScholarsArchive@OSU

Plant biomass and nutrient distribution in a young Pseudotsuga menziesii forest ecosystem

Growth rate of wheat (Triticum aestivm L., var. Gaines) as a function of moisture stress and nitrogen supply

Nutrient uptake by conifer seedlings as influenced by root CEC and competing species

Some soil factors affecting snowbrush nodulation

Relationships of clay mineralogy to landscape stability in Western Oregon

Effect of phosphorus forms and fertilizer rates on mycorrhizal development on containerized seedlings

Morphology, genesis, and classification of soils forming in recent age tephra deposits from Mt. St. Helens volcano

Root symbionts and soil microorganisms associated with actinorrhizal plants

Site quality of western hemlock and chemical characteristics of some western Oregon andic soils

Genesis of some soils in the central western Cascades of Oregon

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