Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 7932 for “"Soil"”.
-
Soil conditioner effects on soil erosion, soil structure and crop performance
Previous work has suggested that soil conditioners can provide environmentally beneficial aids to agriculture and soil conservation. To investigate this further, studies were carried out on soil conditioner effects on soil erosion, soil structure and crop performance. The main soil conditioner …
-
Soil and permafrost distribution, soil characterisation and soil vulnerability to human foot trampling, Wright Valley, Antarctica
Soils and shallow permafrost in Wright Valley, Antarctica were mapped at a scale of 1:50 000 to depict their spatial distribution, and sampled to determine the main drivers for the soil classification. In the cold desert of Wright Valley the Gelisol order of Soil Taxonomy was used to classify the …
-
Soil Salinity Study in Northern Great Plains Sodium Affected Soil
… and sodium (Na) transport in undisturbed soil columns and to develop a remote sensing technique to characterize salinization in South Dakota soils. Fortyeight undisturbed soil columns (30 cm x 15 cm) collected from White Lake, Redfield, and Pierpont were used to assess the chemical …
-
AMINO ACIDS AS DIAGNOSTICS OF SOIL AND SOIL WATER QUALITY
… nitrogen and carbon exported from grassland soil is scarce. Evidence from the literature for other environments, suggests that determination of amino acid patterns of distribution may be a useful method for improved understanding of the interaction of microbial synthesis and degradation of …
-
Effect of soil consolidation on soil-lining interaction in tunnels
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2000.
-
Hydrocollapsible soil correlations
… measured collapse and routinely measured soil properties. From graphs of each soil property versus percent collapse, it is determined that dry density and water content have the strongest relationship of the variables examined to collapse. Multiple linear regression was also utilized to …
-
The influence of fungi upon soil structure and soil water relations
The investigation of soil structural stability and soil water processes was assessed through the application of laboratory investigations and a field based analysis. The impact of an arbuscular mycorrhizal (AM) fungal exudate glomalin (a glycoprotein), proposed to be hydrophobic was assessed for a …
-
The Soil-Column Method and Other Techniques for Evaluating Soil Fungicides
Made available in DSpace on 2014-12-05T20:30:14Z (GMT). No. of bitstreams: 1 6200635.pdf: 3515548 bytes, checksum: 513c85d3bdf7e1cd6a4459abd892711a (MD5) Previous issue date: 1961
-
Measurement of Forms of Soil Magnesium and the Soil Magnesium Requirement
Made available in DSpace on 2014-12-04T20:16:51Z (GMT). No. of bitstreams: 1 0015279.pdf: 6038667 bytes, checksum: 5de541d1ddc118c118171e699c69166f (MD5) Previous issue date: 1955
-
Relationships of soil test phosphorus with soil properties and phosphorus forms
A comprehensive approach to soil P management in agricultural systems requires a balance between nutritional enhancement of the soil and a reduction in adverse consequences on the environment. Evaluation of forms in which P is present in the soil, dynamics of P transformation across these forms, …
-
Soil Organic Nitrogen - Investigation of Soil Amino Acids and Proteinaceous Compounds
Soil carbon (C) and nitrogen (N) are predominantly in organic form. Proteins/ peptides, as an important organic form of N, constitute a substantial part of soil organic matter. On one hand, proteins/peptides are an important N source for plants and microorganisms, particularly in soils where …
-
The effect of mulch on soil temperature, soil moisture, and evaporation
Conclusions: the absorption hygrometer cannot be used satisfactorily to measure differences in evaporation from small plots.
-
Land-use change effects on soil organic carbon, total soil nitrogen, and soil erosion in a temperate forest and grassland
… several factors that influence the retention of soil organic carbon (SOC) and total soil nitrogen (TSN) including soil texture, climate, slope length and gradient, and current and past land-use. The purpose of this study was to compare by land use the retention of SOC and TSN on sloping …
-
Soil Moisture Estimation From Soil Spectral Characteristics in a Precision Farming Environment
… of a cokriging technique generated more detailed soil moisture maps than the limited data alone. This method shows potential for development as part of a data fusion technique to generate moisture maps from a minimum of samples.
-
Dynamic soil modeling in site response and soil-large pile interaction analysis
… problems; 1) one dimensional wave propagation in soil deposits and 2) the effects of lateral spreading on large pile foundations. Two new soil damping formulations are implemented in non-linear one-dimensional site response analysis for small and large strains. The first formulation introduces an …
Page 1 of 397