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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 215 for “"soil pH"”.
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Effects of soil pH and soil water potential on arbuscular-mycorrhizal fungal colonization of soybean
… in the growth medium. The effect of extreme soil pH and moisture conditions on AM fungal development and plant-growth enhancement has been well documented independently. However, the soil factors that influence the survival and success of fungi may not act independently. We have conducted a …
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Extractable chromium, iron, and manganese from two Michigan soils as related to soil pH and applied chromium
… State University. Dept. of Crop and Soil Sciences,
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Soil PH and clay content associated with chronic wasting disease in white-tailed deer in northern Illinois
Soil is an important reservoir for chronic wasting disease (CWD) which is a prion disease that infects cervids through both direct contact with infected animals and contact with contaminated environments. I built a boosted regression tree model that accurately predicted (AUC = 0.954) the …
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Insect succession and changes in the soil pH and electrical conductivity associated with decomposing pig carcasses on the Table Mountain National Park of the Western Cape Province of South Africa
… and changes in the chemistry of carrion-impacted soil is crucial in the application of forensic entomology and soil chemistry in post-mortem interval estimations. However, within the Western Cape Province of South Africa, and specifically, the Table Mountain region, no studies on …
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The effects of pH on the biodegradation of benzene, toluene, ethylbenzene, m-Xylene in soils
… were used to examine the effect of soil pH on the biodegradation of benzene, toluene, ethylbenzene, and m-xylene in subsurface soils. The biodegradation potential of both denitrifying and aerobic respiring microorganisms were assessed. Uncontaminated soil from five different soil …
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Effect of soilpH and temperature on the biological control of Rhizoctonia solani by Bacillus megaterium and Trichoderma harzianum
… used for a systematic study of the effect of soil pH and temperature on the biological control of soilborne plant pathogens. In vitro experiments showed that T. harzianum isolate Th008 was antagonistic to R. solani and compatible to B. megaterium strain B153-2-2. Under greenhouse conditions, …
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Characterization of soils via portable X-ray fluorescence spectrometer
Characterization of soil is critically important for any soil scientist initiating their research. Soil pH and soil cation exchange capacity (CEC) are two of the important soil properties that cannot be disregarded when considering the quality of soil. Current methods for evaluating these …
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Application of electrokinetic remediation on contaminated alluvial soils in Sri Gading, Batu Pahat,
… contained in the most radiation-contaminated soil by using the most optimised electrokinetic remediation technique. This novel study that saved time and costs based on electrokinetic optimisation was the ultimate vision to be discovered on this thesis. In addition, reduction in terrestrial …
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Improved Management of Acid Sulfate Soils for Rice Production in Casamance, Senegal
… rice is primarily produced, have acid sulfate soils with low pH and potential aluminum and iron toxicity. The goal of this work was to determine if soil amendments can alleviate soil acidity, counteract the negative biogeochemical effects that occur in flooded conditions, and increase rice …
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Seasonal and site relationships to acetylene reduction by actinorhizal black alder and Russian olive root nodules
… bottomland Mollisol increased exponentially with soil temperature. Soil moisture content, pH and nitrogen concentration and leaf nitrogen concentration were not correlated with ARA. Soil pH and nitrogen concentration did not change with season. Bottomland soil pH was less under alder than under …
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A Vegetational Continuum of the Upland Forests of Three Counties in South Central Missouri
… the exposure, species diversity, elevation, and soil pH of each stand. Linear regression and analysis of variance were used when applicable to test the significance of these relationships. Results indicated no significant relationship between exposure and continuum numbers. However, significant …
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Miocene paleoenvironments and paleosol pH proxies.
… endeavor that draws on sedimentology, stratigraphy, geochemistry, and geostatistics. This dissertation includes two paleoenvironmental case studies and the development of a new suite of proxies for soil pH. The first case study was performed at Coffee Ranch, the site of a late Miocene (6.6 Ma) …
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Soil bacterial structure and function associated with the invasive grass Microsteguim vimineum and two native grasses
Soil microorganisms play vital roles in biogeochemical cycles and are necessary for maintaining soil health. An invasive plant that alters the structure and function of the soil microbial assemblage could gain an advantage over native plants, enhancing its ability to invade new habitats, alter …
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Application of silicon to improve yield and quality of potatoes (Solanum Tuberrosum L.)
… from fungal diseases and improved uptake of phosphorus. Since very little research has focused on the role of Si in improving potato production, three glasshouse pot trials were conducted at the Hatfield Experimental farm and Department of Plant Pathology glasshouses of the University of …
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GROWTH, NODULATION AND NITROGEN FIXATION OF ALFALFA (MEDICAGO SATIVA L) AND RED CLOVER (TRIFOLIUM PRATENSE L) AS INFLUENCED BY SOIL ACIDITY AND LIMING
… were conducted to examine the influence of soil acidity and liming on the growth of Rhizobium and the nodulation, nitrogen fixation, and yield of alfalfa and red clover.</p><p>In the greenhouse, from soil pH 5.0 to 5.6, nitrogen fixation was shown to be more correlated to Al saturation than …
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Effect of land application of fluidized-bed combustion residue on soil and plant characteristics of reclaimed surface-mined pastures, performance and mineral status of grazing steers and nutrient balance by sheep fed the forage
… A grazing trial was conducted on an acidic mine soil to compare FBCR to dolomitic limestone and no amendment (control). Six steers per treatment were grazed rotationally on three replications (rep) of three .8 ha pastures. Both materials increased soil pH similarly, and reduced plant uptake of …
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Future crop suitability assessment and the integration of Orphan crops into Kenya's food systems
… (2040-2060). To further understand the influence soil pH has on the climate suitability of these five crops, QGIS was used to overlap Ecocrop suitability outputs and Soilgrids soil pH rasters. CORDEX projections indicated a 2°C- 2.5°C and 1°C rise in temperature under RCP8.5 and 4.5 respectively, …
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Relationships among nutrient concentrations in corn (Zea mays L.) plants and extractable soil nutrients
… relationships among nutrients in corn plants on soils with high yield potentials, to study the suitability of soil tests for estimation of micronutrient concentrations in plants, and to determine if B fertilization affects corn grain yields on selected Virginia soils. Fifty-three field sites were …
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Spatial Variability of Plant Nutrients in Two Illinois Fields
… questions concerning the spatial variability of soil supplied plant nutrients in fields. Two Illinois fields which have been soil sampled in a 25 meter grid for several previous years and having a known history were selected to determine the variability of soil pH, and available P and K in a …
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Switchgrass tolerance to cadmium: uptake and translocation
… of (1) cultivar and cadmium (Cd)application, (2) soil pH and Cd application, and (3) soil moisture and Cd application on biomass accumulation and Cd allocation of switchgrass. In the first experiment, 'Alamo', 'Blackweir, 'Cave-in-Rock', and 'Trailblazer' switchgrass were grown in sand culture and …
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