Index Catalog // ScholarsArchive@OSU

Influence of a sudangrass green manure on microorganisms and early dying of potatoes in two soils

Creator:: Parks, Robin L.
Abstract:: Effect of a sudangrass green manure in two soil types on the activity, populations and community structure of soil microorganisms, populations of Verticillium dahliae in soil and on potato roots, and potato early dying, were evaluated in a field microplot experiment in the Columbia Basin. Potato cv. Russet Burbank was...
Resource Type:: Masters Thesis
Full Text:: 1996 and 1997, and by 43.0 % in the Washington soil in 1996 only. Neither green manure or soil type

Engineering properties of Oregon and Washington coast range soils

Creator:: Alto, Jalmer V.
Abstract:: Landslides are frequent in the steep forested regions of the Oregon and Washington coastal mountain ranges. The need for forest products has resulted in increasing logging activity in these marginally stable areas. The occurrence of landslides has increased, which in turn has focused greater interest in slope stability management. Of...
Resource Type:: Masters Thesis
Full Text:: Washington Coast Range Soils by Jalmer V. Alto A THESIS submitted to Oregon State University in nartial

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:: et al. (1968). The most recent and extensive studies on soil genesis in the Cascades of Washington

Silicic acid and oxidizable carbon movement in a Walla Walla silt loam as related to long-term residue and nitrogen applications

Creator:: Douglas, Clyde Lee
Abstract:: Intensive cultivation of Walla Walla silt loams (coarse silty, mixed, mesic, typic Haploxeroll) in eastern Oregon and Washington during the past 50 years, has decreased internal soil drainage in the 15 to 40 cm layer. However, no measurements have been made to determine the causes and corrective management for this...
Resource Type:: Dissertation
Full Text:: ) in eastern Oregon and Washington during the past 50 years, has decreased internal soil drainage in

The influence of soil compaction on early conifer growth in the southern Washington Cascades

Creator:: Robbins, Richard William
Abstract:: This study evaluated the effect of soil compaction on the growth of natural regeneration on volcanic ash-influenced soils in the southern Washington Cascades. Growth of 9 to 18 year-old sapling-. sized Ponderosa pine (Pinus ponderosa Laws.) was studied on sites ranging from 915 to 1006 m elevation in an area...
Resource Type:: Masters Thesis

Primary succession on a receding glacier forefront : with special emphasis on root-colonizing fungi

Creator:: Jumpponen, Ari
Abstract:: Plant succession is among the fundamental concepts in ecology. Studies addressing plant recruitment, successional mechanisms, and the role of root-colonizing fungi with focus on dark-septate endophytes (DSE) were conducted in the laboratory and on the forefront of receding Lyman Glacier (North Cascade Range, Washington, U.S.A.). Primary successional studies primarily focus...
Resource Type:: Dissertation

Microbiology of basalts targeted for deep geological carbon sequestration : field observations and laboratory experiments

Creator:: Lavalleur, Heather J.
Abstract:: With rising concentrations of CO₂ in the Earth's atmosphere causing concern about climate change, many solutions are being presented to decrease emissions. One of the proposed solutions is to sequester excess CO₂ in geological formations such as basalt. The deep subsurface is known to harbor much of the microbial biomass...
Resource Type:: Masters Thesis
Full Text:: land in Washington state, Oregon, and Idaho (Figure 1.2) (McGrail et al. 2006). While well studied

Nitrogen transformation and losses in Walla Walla silt loam soil as influenced by wheat straw and nitrogenous fertilizers

Creator:: Chandra, Purna
Resource Type:: Dissertation
Full Text:: Loam Soil as Influenced by Wheat Straw and Nitrogenous Fertilizers 1TrROGEN TRANSFORMATION AND LOSSES

Microbial community structure as influenced by season and stand age in a Douglas-fir (Pseudotsuga menziesii) ecosystem

Creator:: Kucera, Jennifer Moore
Abstract:: Forest harvest can have significant impacts on forest ecosystems that may influence the capacity of soils to sequester carbon (C). The microbial community controls decomposition, which is a critical process in partitioning litter- and root-C between CO₂ and storage in semi-permanent soil-C pools. The objectives of this study were to...
Resource Type:: Dissertation
Full Text:: study management and soil microbiology interactions. The objective of this dissertation was to use

Physiochemical mechanisms for the transport and retention of technetium

Creator:: Jansik, Danielle P.
Abstract:: Understanding the transport and retention of radionuclides in the environment is important for protecting freshwater supplies and minimizing impact to biologic systems. Technetium-99 (Tc⁹⁹) is a radionuclide of interest due to its long half-life (2.13 x 10⁵ years) and toxicity. In the form of pertechnetate (TcO₄⁻), Tc is expected to...
Resource Type:: Dissertation
Full Text:: Technetium by Danielle P. Jansik A DISSERTATION submitted to Oregon State University

ScholarsArchive@OSU

Influence of a sudangrass green manure on microorganisms and early dying of potatoes in two soils

Engineering properties of Oregon and Washington coast range soils

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

Silicic acid and oxidizable carbon movement in a Walla Walla silt loam as related to long-term residue and nitrogen applications

The influence of soil compaction on early conifer growth in the southern Washington Cascades

Primary succession on a receding glacier forefront : with special emphasis on root-colonizing fungi

Microbiology of basalts targeted for deep geological carbon sequestration : field observations and laboratory experiments

Nitrogen transformation and losses in Walla Walla silt loam soil as influenced by wheat straw and nitrogenous fertilizers

Microbial community structure as influenced by season and stand age in a Douglas-fir (Pseudotsuga menziesii) ecosystem

Physiochemical mechanisms for the transport and retention of technetium

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