Index Catalog // ScholarsArchive@OSU

Seedling recruitment of hairy nightshade and other summer annual weeds in irrigated row crops

Creator:: Peachey, Ronald Edward
Abstract:: This study evaluated the effects of tillage system, rotational tillage sequences, and winter seed burial depth on weed seedling recruitment in irrigated cropping systems. Notill (NT) planting of vegetable crops reduced emergence of hairy nightshade by 77 to 99% and Powell amaranth emergence from 50 to 87% compared to conventional...
Resource Type:: Dissertation

Whole farm case studies : a how-to guide

Creator:: Murray, Helene
Abstract:: Calls for increased farmer involvement in research and extension programs have been numerous and well supported. One approach to integrate the collective knowledge and experience of agricultural scientists and farmers is through whole farm case studies (WFCS). An interdisciplinary team of 34 research and extension personnel at Oregon and Washington...
Resource Type:: Dissertation
Full Text:: numerous to recount here. Daniel McGrath, Larry Lev, and Alice Mills Morrow have been a pleasure to work

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:: -Zitzewitz, Patricio Aizugaray, Claudia Orellana, Eduardo Arellano, Timothy Knight, Heather Darby, Daniel

Changes in grain quality and grain protein composition of winter wheat cultivars under different levels of soil nitrogen and water stress

Creator:: Saint Pierre, Carolina
Abstract:: Hard white winter (HVVW) wheat cultivars must have superior protein quality and consistent processing quality to be successful in the Asian market. New cultivars and management strategies are needed to produce HVVW grain for both bread and noodle applications from diverse environments in the US Pacific Northwest (PNW). This study...
Resource Type:: Dissertation

Plot-Scale Field Investigation : Characterizing Water Motion in Sandy Agricultural Soils

Creator:: Nolasco, Stephanie M.
Abstract:: Irrigated agricultural production in sandy soils presents several unique challenges to growers, including naturally high permeability, low native water retention, as well as high rates of water drainage losses and leaching of chemicals to the shallow aquifers. This study is an initial investigation into water motion in the sandy agricultural...
Resource Type:: Masters Thesis
Full Text:: throughout my graduate career. I am especially grateful to Larry Carroll of Holzapfel Ranch and Daniel

Nitrogen mineralization from composted and fresh yard trimmings

Creator:: Nartea, Theresa J.
Resource Type:: Masters Thesis

Merging Field Work with Machine Learning : Exploring Andic Soil Development in the Cascade Range

Creator:: Osterloh, Kristopher Richard
Abstract:: Andic soils (aka Andisols) have unique properties that are important to society. For soil scientists, the genesis and taxonomy of Andisols is often confused because they can form in both volcanic and non-volcanic material. This dissertation seeks to address such confusion by looking at andic soil development in the Cascade...
Resource Type:: Dissertation

Scaling, ash-driven bistability, and other agents of soilscape genesis discovered while digitally mapping soils of the Blue Mountains, Oregon

Creator:: Almquist, Vance Warner
Abstract:: This dissertation reports on four related, though separate projects. The first project details the process of carrying out a digitally augmented soil mapping (DSM) effort alongside an ongoing survey in Oregon's Ochoco National Forest (ONF) using a Random Forest algorithm. The second chapter describes a initial soil survey in Oregon's...
Resource Type:: Dissertation
Full Text:: opted to just write your names. In no particular order - Daniel Miller, Ashley Bromley, Kris Osterloh

Developing Flavorful and Sustainable Barley (Hordeum vulgare L.): Integrating Malting Quality and Barley Contributions to Beer Flavor within the Framework of Facultative Growth Habit

Creator:: Herb, Dustin Walker
Abstract:: This dissertation consists of a general introduction, three manuscripts, and general conclusions. The research integrates research on (1) the effects of barley genetics and production environment on the contribution of barley to beer flavor, (2) the effects of degree of malt modification on barley contributions to beer flavor and (3)...
Resource Type:: Dissertation

ScholarsArchive@OSU

Seedling recruitment of hairy nightshade and other summer annual weeds in irrigated row crops

Whole farm case studies : a how-to guide

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

Changes in grain quality and grain protein composition of winter wheat cultivars under different levels of soil nitrogen and water stress

Plot-Scale Field Investigation : Characterizing Water Motion in Sandy Agricultural Soils

Nitrogen mineralization from composted and fresh yard trimmings

Merging Field Work with Machine Learning : Exploring Andic Soil Development in the Cascade Range

Scaling, ash-driven bistability, and other agents of soilscape genesis discovered while digitally mapping soils of the Blue Mountains, Oregon

Developing Flavorful and Sustainable Barley (Hordeum vulgare L.): Integrating Malting Quality and Barley Contributions to Beer Flavor within the Framework of Facultative Growth Habit

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