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Rooting of pear hardwood cuttings using VA mycorrhizal fungi, Agrobacterium rhizogenes and rooting hormones

Creator:: Gonzalez-Caldwell, Sandra
Resource Type:: Masters Thesis
Full Text:: this research project. Deep gratitude goes to Dr. Robert Linderman, my academic co-advisor, in

Inoculum potential of vesicular-arbuscular mycorrhizal fungi in two Costa Rican soils with different vegetation covers

Creator:: Fischer, Christine R.
Abstract:: Mycorrhizae are important for plant growth, particularly in nutritionally poor soils. Vesicular-arbuscular mycorrhizae (VAM) are the primary form of mycorrhizae found in tropical plants, and their persistence in the soil as colonizing fungal propagules following deforestation cannot be directly measured. Utilizing the "most probable number" (MPN) method for estimating infective...
Resource Type:: Masters Thesis

Potential of Trichoderma sp. for inhibition of Botrytis cinerea and Sclerotinia sclerotiorum on snap beans

Creator:: Nelson, Mark E.
Abstract:: Isolates of Trichoderma spp. collected from snap bean foliage were tested for inhibition of grey mold of snap beans caused by Botrytis cinerea. In a detached blossom-pod assay an isolate of Trichoderma hamatum reduced pod rot by 94% compared to the nontreated check. Control was comparable to that obtained with...
Resource Type:: Masters Thesis
Full Text:: . I would also like to thank my committee members, Dr. R. G. Petersen and Dr. R. G. Linderman for

Influence of ethylene treatments or ethephon dips on bulbous iris forcing

Creator:: Cascante Herrera, Xenia
Abstract:: A series of 3 experiments was conducted from 1984 to 1986 to determine the influence of ethylene gas treatments and ethephon [(2-chloroethyl) phosphonic acid] dips, in combination with several heat curing durations, on the performance of greenhouse-forced Blue Ribbon and Ideal iris. In the first study which examined the effects...
Resource Type:: Masters Thesis
Full Text:: . I thank the members of my graduate committee. Dr. Robert Linderman, Dr. James Green, and Dr

Effects of beaver on streams, streamside habitat, and coho salmon fry populations in two coastal Oregon streams

Creator:: Bruner, Karen L.
Abstract:: The effects of beaver (Castor canadensis) on stream morphology, riparian zones, and coho salmon (Oncorhynchus kisutch) fry in Cape and Cummins Creeks, Oregon, were examined using stream surveys, vegetation transects, and coho salmon fry counts in 1987. The basin around Cape Creek has been extensively logged since the late 1940's....
Resource Type:: Masters Thesis

Development and application of a resource selection model for pygmy rabbits

Creator:: Meisel, Jennifer K.
Abstract:: Pygmy rabbits (Brachylagus idahoensis) in Oregon and Washington are a sagebrush (Artemisia tridentata spp.) obligate species of concern because of declining populations and extirpation from much of their range. Efforts are underway to establish a captive bred population of the Columbia Basin pygmy rabbit in Washington state for reintroduction into...
Resource Type:: Masters Thesis

Exploring the Magnetic Properties of Specific Grain-Sizes to Understand Marine Depositional Systems: A Case Study from the Eirik Ridge South of Greenland over the Last Glacial Cycle

Creator:: Freiberg, Benjamin T.
Abstract:: Disentangling sediment source from sediment transport is a fundamental marine geologic challenge critical to the interpretation of any sedimentary record. The Eirik Ridge, a sediment drift south of Greenland, receives terrigenous sediment primarily from subglacial erosion of south Greenland’s Precambrian bedrock and Paleogene volcanics that outcrop in east Greenland and...
Resource Type:: Masters Thesis
Full Text:: ...................................... 39 5.3 The Response of the sGIS through the Last Two G-IG Cycles

Trinexapac-ethyl timing and rate effects on crimson clover (Trifolium incarnatum L.) seed yield and seed yield components

Creator:: Morad, Mohammed
Abstract:: Oregon is the world’s leading producer of crimson clover (Trifolium incarnatum L.) seed. Recent research has reported that seed yield has been increased in cool-season grass and red clover (T. pratense L.) seed crops with the application of trinexapac-ethyl, a gibberellic acid biosynthesis inhibiting plant growth regulator (PGR) and lodging-control...
Resource Type:: Masters Thesis
Full Text:: Thomas G. Chastain Oregon is the world’s leading producer of crimson clover (Trifolium incarnatum

Use of wetlands in the Tulare Lake Basin by wintering ducks

Creator:: Coe, Holly N.
Abstract:: I evaluated the use of various wetlands by wintering ducks in the Tulare Lake Basin (TLB), California, during October 1982 - April 1983 and September 1983 - March 1984. Aerial waterfowl counts of the TLB were used to document spacial use patterns by ducks. Ground surveys on evaporation ponds in...
Resource Type:: Masters Thesis
Full Text:: graduate committee members, Robert G. Anthony, Robert L. Jarvis, and Fred L. Ramsey for their help and

Effects of habitat manipulations on California quail in western Oregon

Creator:: Oates, Russell M.
Abstract:: The effects of disking, food plantings, and wheat plantings on a population of California quail (Lophortyx californicus) were studied from fall 1976 to spring 1978 on the E.E. Wilson Wildlife Area, Oregon. Twelve 16.2-ha study sites were established: 3 study sites for each treatment and 3 control sites. Disked areas,...
Resource Type:: Masters Thesis
Full Text:: . Krueger and Dr. Robert G. Anthony whose willingness for frequent consultation and whose extra efforts

ScholarsArchive@OSU

Rooting of pear hardwood cuttings using VA mycorrhizal fungi, Agrobacterium rhizogenes and rooting hormones

Inoculum potential of vesicular-arbuscular mycorrhizal fungi in two Costa Rican soils with different vegetation covers

Potential of Trichoderma sp. for inhibition of Botrytis cinerea and Sclerotinia sclerotiorum on snap beans

Influence of ethylene treatments or ethephon dips on bulbous iris forcing

Effects of beaver on streams, streamside habitat, and coho salmon fry populations in two coastal Oregon streams

Development and application of a resource selection model for pygmy rabbits

Exploring the Magnetic Properties of Specific Grain-Sizes to Understand Marine Depositional Systems: A Case Study from the Eirik Ridge South of Greenland over the Last Glacial Cycle

Trinexapac-ethyl timing and rate effects on crimson clover (Trifolium incarnatum L.) seed yield and seed yield components

Use of wetlands in the Tulare Lake Basin by wintering ducks

Effects of habitat manipulations on California quail in western Oregon

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