Index Catalog // ScholarsArchive@OSU

Creator:: Moreno, Daniel
Abstract:: The extent of agricultural drainage has created concern for its potential undesirable effects on surface water quality. Land applications of liquid manure on tile drain fields have the potential to transport solutes and bacteria to the drains following precipitation or irrigation events and many times are directly sent to a...
Resource Type:: Masters Thesis
Full Text:: . According to Busman (2002), until the 1970's, most subsurface drainage pipes in the US consisted of clay

Creator:: Ochiai, Naoyuki
Abstract:: The genus Phytophthora comprises numerous plant pathogens in both natural and managed ecosystems. For Phytophthora spp. that infect roots, dispersal occurs in soil water through a combination of advection and swimming of specialized motile propagules (zoospores). Specific biological and physico-chemical processes, however, remain poorly understood, due to difficulties in studying...
Resource Type:: Dissertation
Full Text:: successful at modeling anisotropic dispersion. At low infiltration rates (<100 m s-1), simulations predict

Creator:: Chen, Chengci, 1964-
Resource Type:: Dissertation
Full Text:: , Richard J. Roseberg, and John S. Selker 4 ABSTRACT Swelling soils are distinguished from rigid soils

Creator:: McMorran, Jeffrey P.
Resource Type:: Dissertation
Full Text:: irrigation districts in the early 1900's, construction of the McNary dam and locks on the Columbia, and

Creator:: Holcomb, Jess Charles
Abstract:: Ammonia (NH₃) volatilization can result in a substantial amount of surface applied nitrogen (N) being lost into the atmosphere, making it an environmental pollutant as well as reducing plant-available N. However, N can also be easily lost from the soil through leaching, and nitrous oxide (NO₂). Enhanced efficiency N fertilizers...
Resource Type:: Masters Thesis
Full Text:: horticultural land. Soil Use Manage. 16:145-151. Grant, C.A., S. Jia, K.R. Brown, and L.D. Bailey. 1996

Creator:: Minshew, Hudson F.
Resource Type:: Masters Thesis
Full Text:: fixation prior to 1940 was near zero, but since then it has increased exponentially. Before the 1970's

Creator:: Mueller, Carsten W., Weber, Peter K., Kilburn, Matt R., Hoeschen, Carmen, Kleber, Markus, and Pett-Ridge, Jennifer
Abstract:: Since a NanoSIMS high-resolution secondary ion mass spectrometry instrument was first used for cosmochemistry investigations over a decade ago, both interest in NanoSIMS and the number of instruments available have significantly increased. However, SIMS comes with a set of challenges that are of both technical and conceptual nature, particularly for...
Resource Type:: Article
Full Text:: 539 (e.g. C, N, O, S, P) with a Cs+ beam, or metals/metalloids (e.g. Fe, Al, Mn, Mo) with a 540 O

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:: for agricultural irrigation in the 1950’s and overall trends in nitrate contamination remain high

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