Index Catalog // ScholarsArchive@OSU

Investigation of hop downy mildew through association mapping and observations of the oospore

Creator:: Parker, Thomas B.
Abstract:: Hop downy mildew is a devastating disease affecting hop requiring expensive fungicide applications throughout the growing season. Plant resistance is highly desirable and theorized as being decidedly quantitative with dominance and epistasis involved in resistance. An association mapping approach using a mixed-model was used to identify AFLP markers associated with...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Thomas B. Parker for the degree of Doctor of Philosophy in

The influence of phosphatase-producing bacteria on phosphatase activity and available phosphorus in soil

Creator:: Nelson, Sheila J.
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Richard P. Dick Phosphorus (P) is frequently a limiting soil nutrient because it is

Effects of long-term residue management and nitrogen fertilization on availability and profile distribution of nitrogen, phosphorus, and sulfur

Creator:: Christ, Robert A.
Resource Type:: Masters Thesis
Full Text:: approved:/ Richard P. Dick A greenhouse pot study was conducted on soils from the Residue Utilization

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:: advisor, Richard Dick, who somehow managed to continue mentoring from across the country and globe. His

Transformations of sulfur in wetland rice soils

Creator:: Islam, M. Mujibul
Resource Type:: Dissertation
Full Text:: : Richard P. Dick In recent years sulfur (S) deficiency has emerged as constraint to rice production in

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:: privacy water content changed from 0.35 to 0.19 g/g (equivalent to 0.03 to 1.5 MPa water potential

Hare barley (Hordeum murinum ssp. leporinum) biology and management in cool season perennial grass pastures of western Oregon

Creator:: Haavisto, Jessica Lee
Abstract:: Hare barley (Hordeum murinum ssp. leporinum) is a cool season annual grass that invades pastures and range areas around the world. A documented weed management issue in several Oregon counties, hare barley may infest several thousand acres in western Oregon. This study was conducted to investigate the biology and develop...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ Andrew G. Hulting Hare barley (Hordeum murinum ssp. leporinum) is a cool season annual

The Biogeochemistry of nitrogen and phosphorus cycling in native shrub ecosystems in Senegal

Creator:: Dossa, Ekw'e Lokossou, 1960-
Abstract:: Two native shrub species (Piliostigma reticulatum and Guiera senegalensis) are prominent vegetation components in farmers’ fields in Senegal. However, their role in nutrient cycling and ecosystem function has largely been overlooked. A study including both laboratory and field experiments was conducted to evaluate potential biophysical interactions of the two shrub...
Resource Type:: Dissertation
Full Text:: Abstract approved: Richard P. Dick Two native shrub species (Piliostigma reticulatum and Guiera

Activity, composition and structure of soil microbial communities in Savannahshrubs of agroecosystems in semi-arid Senegal

Creator:: Diedhiou, Sire
Abstract:: Piliostigma reticulatum and Guiera senegalensis are two native shrubs that coexist with row crops in parkland systems of the Sahel of Africa. Although permanently green all year around in soil depleted in nutrients and dry for a nine-month period, these shrubs have been largely overlooked. Conventional management of these shrubs...
Resource Type:: Dissertation
Full Text:: : ___________________________________________________________________ Richard P. Dick Piliostigma reticulatum and Guiera senegalensis are two native shrubs that

Organic soil amendements (sic) : impacts on snap bean common root rot and soil quality

Creator:: Cespedes Leon, Maria Cecilia
Abstract:: Common root rot is a major disease of commercially grown snap bean (Phaseolus vulgaris L.) on the irrigated sandy soils of central Wisconsin. The objective of this study was to determine the relationships between soil properties and suppressiveness to common root rot of snap bean (causal agent Aphanomyces euteiches) in...
Resource Type:: Masters Thesis
Full Text:: Amendments: Impacts On Snap Bean Common Root Rot And Soil quality Abstract approved: Richard P. Dick

ScholarsArchive@OSU

Investigation of hop downy mildew through association mapping and observations of the oospore

The influence of phosphatase-producing bacteria on phosphatase activity and available phosphorus in soil

Effects of long-term residue management and nitrogen fertilization on availability and profile distribution of nitrogen, phosphorus, and sulfur

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

Transformations of sulfur in wetland rice soils

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

Hare barley (Hordeum murinum ssp. leporinum) biology and management in cool season perennial grass pastures of western Oregon

The Biogeochemistry of nitrogen and phosphorus cycling in native shrub ecosystems in Senegal

Activity, composition and structure of soil microbial communities in Savannahshrubs of agroecosystems in semi-arid Senegal

Organic soil amendements (sic) : impacts on snap bean common root rot and soil quality

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