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Ecology of a soil population of Rhizobium leguminosarum bv. trifolii

Creator:: Leung, Kam-tin
Resource Type:: Dissertation
Full Text:: rinsed thoroughly with deionized water and air-dried before use. (ii) p-Phenylenediamine fluorescence

Growth characteristics of 2,4-dichlorophenoxyacetic acid degrading bacteria recovered from an Oregon soil

Creator:: Phillips, David C.
Resource Type:: Masters Thesis
Full Text:: request. David C. P ips, Author Redacted for Privacy Redacted for Privacy Redacted for Privacy

Influences of soil acidity and variety of plant on the populations of Rhizobium trifolii found in nodules of Trifolium subterraneum L.

Creator:: Dughri, Muktar H.
Abstract:: Complementary methods of strain identification were sought to delineate the composition of the population of Rhizobium trifolii found in nodules of Trifolium subterraneum L. when exposed to an Abiqua silty clay loam (Cumulic Ultic Haploxeroll) containing a resident population of R. trifolii. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDSPAGE) was...
Resource Type:: Dissertation
Full Text:: my major professor Dr. P. J. Bottomley for his friendship, advice and guidance in conducting this

Detection of the herbicide alachlor and its sulfonic acid metabolite in soil

Creator:: Smith, Lesley A. (Lesley Anita), 1968-
Abstract:: The chloroacetanilide herbicide alachlor is the second most widely used herbicide in the US, where it is used on major crops such as corn and soybean. Although alachlor is mineralized slowly in soil, metabolites of alachlor have been found in soil indicating that alachlor is subject to chemical or biological...
Resource Type:: Masters Thesis
Full Text:: were conducted following the directions provided in the kit: 80 p.1 aliquots of sample were placed

Episodic dynamics of microbial communities associated with the birth and death of ectomycorrhizal mats in old-growth Douglas-fir stands

Creator:: Blanchard, Joseph H.
Abstract:: Ectomycorrhizal (ECM) fungi of the genera Piloderma and Ramaria form dense hyphal mats in the organic and upper mineral soil layers, respectively, in coniferous forest floors of the Pacific Northwest. Previous studies have determined that fungal mats change the chemical, physical, and biological properties of the soil within. Little information...
Resource Type:: Masters Thesis
Full Text:: including N, phosphorus (P), and potassium (K) to the host. Unlike saprotrophic fungi, mycorrhizal fungi

Characteristics of bradyrhizobium sp. recovered from Oregon soils

Creator:: Cheng, Hsin-hua
Abstract:: Although the biology of Bradyrhizobium has been studied for almost one hundred years, virtually nothing is known about the ecology and genetic variation in natural soil populations of this genus. The majority of information has been obtained from studies of one species, Bradyrhizobium japonicum, and the diversity within soil populations...
Resource Type:: Masters Thesis
Full Text:: concentrations of 1, 55 and 20 mgkg-1 respectively of Mo, P and S. Sterile deionized water (200 ml) was added

An epifluorescence method for assessing viability of bacteria in soil aggregates

Creator:: Shiozawa, Tracy L.
Resource Type:: Masters Thesis
Full Text:: through different combinations of filters of different pore sizes (p,m) 3. Efficiency of recovery

Symbiotic and saprophytic characteristics of a soil population of Rhizobium leguminosarum bv. trifolii

Creator:: Yap, Kathryn H. M.
Abstract:: Although much has been learned about the comparative nodulating behavior of simple mixtures of rhizobial strains under non-soil situations, it is unclear how these findings relate to the factors influencing nodulation success by the complex mixtures of strains found within soil-borne rhizobial populations. Information on the structure and physiological behavior...
Resource Type:: Masters Thesis
Full Text:: concentrations of lmg Mo/kg and 55mg P/kg respectively. Since 57.5 ml of water were required to raise 1 kg of

Delineation of the composition of an indigenous soil population of Rhizobium meliloti in root nodules of uninoculated field grown Medicago sativa L.

Creator:: Jenkins, Michael B.
Abstract:: Agronomic and microbiological studies were conducted on "Anchor" alfalfa (Medicago sativa L.) established from uninoculated seed on three Aridisols in central Oregon. Significant responses to 230 Kg N per ha (NH₄NO₃), which was applied in mid-April and after each first and second harvests, were observed in yield parameters of the...
Resource Type:: Dissertation
Full Text:: express my sincere appreciation to my major professor, Dr. P. J. Bottomley for his friendship, and

ScholarsArchive@OSU

Ecology of a soil population of Rhizobium leguminosarum bv. trifolii

Growth characteristics of 2,4-dichlorophenoxyacetic acid degrading bacteria recovered from an Oregon soil

Influences of soil acidity and variety of plant on the populations of Rhizobium trifolii found in nodules of Trifolium subterraneum L.

Detection of the herbicide alachlor and its sulfonic acid metabolite in soil

Episodic dynamics of microbial communities associated with the birth and death of ectomycorrhizal mats in old-growth Douglas-fir stands

Characteristics of bradyrhizobium sp. recovered from Oregon soils

An epifluorescence method for assessing viability of bacteria in soil aggregates

Symbiotic and saprophytic characteristics of a soil population of Rhizobium leguminosarum bv. trifolii

Delineation of the composition of an indigenous soil population of Rhizobium meliloti in root nodules of uninoculated field grown Medicago sativa L.

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