Index Catalog // ScholarsArchive@OSU

Soil water availability and chemical transport in a pear (Pyrus communis) orchard swelling clay soil under micro and flood irigation

Creator:: Chen, Chengci, 1964-
Resource Type:: Dissertation
Full Text:: Chemical Transport in a Pear (Pyrus communis) Orchard Swelling Clay Soil under Micro and Flood Irrigation

Predicting the spatial variability in soil properties using DSM across Malheur National Forest

Creator:: Seeno, Elizabeth A.
Abstract:: Soil properties may hold the key to improved predictions of soils during digital soil mapping (DSM), which has developed with a focus on environmental factors external to soil. The spatial variability in soil properties was modeled across Malheur National Forest in eastern Oregon as an approach to improve DSM. The...
Resource Type:: Masters Thesis
Full Text:: , and percent clay content. A Random Forest (RF) classification model, a data mining algorithm that

Soil Development and Organic Carbon Stocks Across a Lithosequence in the Perhumid Coastal Temperate Rainforests of Southeast Alaska

Creator:: Fedenko, Jennifer M.
Abstract:: The perhumid coastal temperate rainforests of southeast Alaska contain an abundance of soil organic carbon (SOC) that has accumulated in a wet, cool climate where forest fire disturbance is minimal and organic matter decomposition rates are low. Coastal temperate rainforests are supported by carbon-rich soils that provide ecosystem services including...
Resource Type:: Masters Thesis
Full Text:: Alaska……….…………87 A.6 Scatterplots of percent clay and percent carbon of soils in the perhumid coastal

Geostatistical applications to salinity mapping and simulated reclamation

Creator:: Al-Taher, Mohamad A.
Abstract:: Geostatistical methods were used to find efficient and accurate means for salinity assessment using regionalized random variables and limited sampling. The random variables selected, sodium absorption ratio (SAR), electrical conductivity (EC), and clay content were measured on samples taken over an area of fifteen square miles. Ordinary kriging and co-kriging...
Resource Type:: Dissertation
Full Text:: clay content. A saving of two-thirds of the cost and time was achieved by using electrical

Exploring Soil-Landscape Relationships on the Pacific Slope of Monteverde, Costa Rica

Creator:: Hesson, Kevin M.
Abstract:: Landscape positions have been used to determine soil properties. My soil study in Monteverde on the Pacific slope of Costa Rica was designed to examine soil-landscape relationships for sites with various land use histories and management. Soil pits were dug at Nacimiento y Vida, Crandell, Curi-cancha, La Calandria, and Finca...
Resource Type:: Masters Thesis
Full Text:: held true for all sites. Percent clay and percent carbon yielded a negative relationship, while

Lithologic Controls on Soil Carbon Partitioning in the Alaskan Coastal Temperate Rainforest

Creator:: Fleiner, Julia H.
Abstract:: Coastal Temperate Rainforests of western North America are carbon dense ecological regions of great importance due to their high biological productivity and climatic conditions leading to the natural accumulation of soil organic carbon (SOC). Yet, the distribution of SOC remains understudied in the CTR environments, particularly in upland mineral soils,...
Resource Type:: Masters Thesis
Full Text:: suggest that clay content plays a central role in determining the amount of SOC stocks and stabilization

Soil Solarization for Weed Management in Tree Seedling Nurseries in the Pacific Northwest

Creator:: Wada, Nami
Abstract:: Soil solarization is a pre-planting practice to reduce weed pressure by trapping solar energy using a transparent polyethylene film to heat soil. Soil solarization has been successfully used in regions with high solar radiation. The purpose of this research was to determine if soil solarization under Pacific Northwest conditions could...
Resource Type:: Masters Thesis
Full Text:: Soil solarization is a pre-planting practice to reduce weed pressure by trapping solar energy using a

Perennial Ryegrass (Lolium perenne L.) Cultivar Response to a Postemergence Application of Mesotrione

Creator:: Hinds-Cook, Barbara J.
Abstract:: Perennial ryegrass (Lolium perenne L.) is a widely grown cool season, bunch type, short lived perennial grass that is native to Europe, Asia, and North Africa, but has been adapted globally. Perennial ryegrass is quick to establish, has a long growing season, and produces high seed yield and forage or...
Resource Type:: Masters Thesis
Full Text:: : Perennial Ryegrass (Lolium perenne L.) Cultivar Response to a Postemergence Application of Mesotrione

Decomposition of Brassicaceae Residue in the Willamette Valley

Creator:: Berry, Pete A.
Abstract:: An important inoculum source of Leptosphaeria maculans and L. biglobosa (syn Plenodomus spp.), the pathogens that cause black leg in Brassicaceae crops, is infected plant residues. The general acceptance of conservation tillage in the Willamette Valley, Oregon, USA, has enabled a build-up in the amount of residue on or near...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Pete A

Brassicaceae Seed Persistence and Dormancy in the Willamette Valley

Creator:: Flick, Gabriel D.
Abstract:: Producers in the Willamette Valley of Oregon are interested in growing canola as a rotational crop in grass seed and cereal rotations. Many other Brassicaceae seed crops also are produced within the valley. Concerns of seed persistence and volunteer contamination of Brassicaceae seed crops prompted the investigation of seed persistence...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Carol A. Mallory-Smith Producers in the Willamette Valley of Oregon are interested in

ScholarsArchive@OSU

Soil water availability and chemical transport in a pear (Pyrus communis) orchard swelling clay soil under micro and flood irigation

Predicting the spatial variability in soil properties using DSM across Malheur National Forest

Soil Development and Organic Carbon Stocks Across a Lithosequence in the Perhumid Coastal Temperate Rainforests of Southeast Alaska

Geostatistical applications to salinity mapping and simulated reclamation

Exploring Soil-Landscape Relationships on the Pacific Slope of Monteverde, Costa Rica

Lithologic Controls on Soil Carbon Partitioning in the Alaskan Coastal Temperate Rainforest

Soil Solarization for Weed Management in Tree Seedling Nurseries in the Pacific Northwest

Perennial Ryegrass (Lolium perenne L.) Cultivar Response to a Postemergence Application of Mesotrione

Decomposition of Brassicaceae Residue in the Willamette Valley

Brassicaceae Seed Persistence and Dormancy in the Willamette Valley

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