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The potassium iodate method for determining organic matter in soils

Creator:: Simkins, Glenn Wood
Resource Type:: Masters Thesis
Full Text:: method the 004) svolved is r**i*d, und Xxi the Other *thod the z'educiz capacity of the soil i In the

Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores

Creator:: Newman, Joseph Paul
Abstract:: Effects of three mulches of tree foliage and twigs (red alder, Douglas-fir, and salal) and homogenized, partially decomposed material (forest floor) on soil macronutrients (Ca, K, Mg, P, NO3, and NH4) were evaluated in the summer of 1997. These effects were measured with buried, coated ion-exchange resin bags at two...
Resource Type:: Masters Thesis

Soil nitrogen and organic matter as affected by Austrian winter peas

Creator:: Oveson, M. M. (Merrill Mahonri), 1900-
Resource Type:: Masters Thesis
Full Text:: Soil nitrogen and organic matter as affected by Austrian

Soil biochemical measures as ecological indicators across agricultural and forest ecosystems of Oregon

Creator:: Knight, Timothy R.
Abstract:: A variety of soil properties have been proposed and tested as potential indicators of soil quality. This study was conducted in an effort to produce a standardized soil quality index for systems in Oregon. Soils in both forested and agricultural systems were sampled in a wide variety of locations, climates,...
Resource Type:: Masters Thesis
Full Text:: ) extracts have been used to determine microbial community composition. Waldrop et al. (2000) compared soil

Soil engineering properties and vegetative characteristics for headwall slope stability analysis in the Oregon coast range

Creator:: Bransom, Mark
Abstract:: Six headwalls in the central Oregon coast range were selected for study of soil engineering properties and vegetativecharacteristics important for analysis of slope stability. The headwalls were considered representative of those which would be candidates for timber leave areas due to geomorphic and topographic features, including steepness of slope and...
Resource Type:: Masters Thesis
Full Text:: dis- tribution and composition, and soil characteristics. The headwalls, as previously defined, are

Quantifying C and N contents and isotope signatures of SOM pools in the H. J. Andrews DIRT plots

Creator:: Keirstead, Heath
Abstract:: The mechanisms governing short- and long-term belowground carbon dynamics need to be understood. As part of a larger project developed to assess the effect of quantity and quality of litter inputs on the rate of soil organic matter (SOM) formation, I examined SOM in the H. J. Andrews Detritus Input...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Soil Science presented on 2, 2004. Title: Quantifying C and N Contents and Isotope

Paleoclimatic changes revealed by soil carbonate, and stable carbon and oxygen isotopes, Eastern Korinthia, Greece

Creator:: Bruno, Caroline R.
Abstract:: Soil carbonate is used to interpret paleoenvironmental conditions in the Eastern Korinthia, Greece, with the use of stable carbon and oxygen isotopes. The Eastern Korinthia consists of a series of marine terraces ranging in age from ~600 to 70.2 ka. The lateral stratigraphic context of the marine terraces allows the...
Resource Type:: Masters Thesis
Full Text:: .............................................................. 14 3. The Loutro Elenis Profile: isotopic composition, total carbonate, bulk density, soil

Geochemical characteristics of iron-manganese nodules in seasonally-saturated soils of the Willamette Valley, Oregon

Creator:: Seter, Lisa M.
Abstract:: This study was initiated to characterize the distribution of Fe-Mn nodules and to elucidate trends of Fe, Mn, and P relative to the intensity of the annual cycles of reduction and oxidation. Nodules were enriched in Fe, Mn, and P relative to the soil matrix making them an integral part...
Resource Type:: Masters Thesis
Full Text:: the degree of Master of Science in Soil Science presented on July 15, 1998. Title: Geochemical

Chemical and physical properties of Douglas fir bark relevant for the production of container crops in Oregon

Creator:: Buamscha, Maria Gabriela
Abstract:: It is widely accepted among nursery producers that [Pseudotsuga menziesii (Mirbel) Franco] bark (DFB) is an excellent substrate for container production, hence its widespread use in Oregon and other regions where Douglas fir constitutes a significant portion of the forest products industry. Despite its widespread use, little information is available...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The potassium iodate method for determining organic matter in soils

Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores

Soil nitrogen and organic matter as affected by Austrian winter peas

Soil biochemical measures as ecological indicators across agricultural and forest ecosystems of Oregon

Soil engineering properties and vegetative characteristics for headwall slope stability analysis in the Oregon coast range

Quantifying C and N contents and isotope signatures of SOM pools in the H. J. Andrews DIRT plots

Paleoclimatic changes revealed by soil carbonate, and stable carbon and oxygen isotopes, Eastern Korinthia, Greece

Geochemical characteristics of iron-manganese nodules in seasonally-saturated soils of the Willamette Valley, Oregon

Chemical and physical properties of Douglas fir bark relevant for the production of container crops in Oregon

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