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 379 for “"soil water"”.
-
Factors Affecting Mobility of Copper in Soil-Water Matrices
… shown that copper is sometimes found in ground water near these fields. Therefore, a laboratory study was undertaken to determine if this copper can result from plasticulture application and to determine the mechanisms that account for the movement through soil to the subsurface. From the …
-
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 …
-
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 …
-
Improvements of MPM and Its Applications in Modelling Rapid Soil/Water Movements
Soil/water interaction is a central challenge for studying hydraulic problems such as seepage flows through embankments, overtopping induced dam failures and the erosion of riverbanks and coastal areas. Since numerical simulations are significantly less costly tools than physical experiments even …
-
Soil Water Depletion and Water Use Efficiency of Wheat and Pea in Saskatchewan
Understanding the distribution of soil water and roots in soil profiles and their relationship to root water uptake (RWU) patterns is important for developing “water smart” rotations. In the semi-arid prairies, the introduction of pea into a rotation with cereals can help mitigate the influence of …
-
Stream water and soil water chemistry after the Table Mountain wildfire, Washington, USA
… were made to investigate how stream water and soil water chemistry changed over 16 months following the Table Mountain wildfire. Sites with different burn severity were also compared. The fire occurred in 2012 in Kittitas County, north of Ellensburg, Washington. Samples were collected …
-
An Experimental Study on Soil Water Characteristics and Hydraulic Conductivity of Compacted Soils
The importance of applying unsaturated soil mechanics concepts to geotechnical engineering design has been widely recognized. Soil water characteristic curve (SWCC) and hydraulic conductivity function (HCF) are vital soil properties that govern engineering behavior of unsaturated soils. In this …
-
Influence of soil water regime on nitrogen availability and plant competition in wet meadows
… in wet meadows include site hydrology, soil nutrient availability and grazing. Of these, depth and annual variation of the water table has been considered as a primary factor and been frequently used in management decisions. A mechanistic understanding of how water regime influences …
-
Effect of soil water content and oxygen diffusion rate on growth of potato sets
… of Agriculture and Applied Science. Dept. of Soil Science, 1956
-
Fate and behaviour of metformin and its transformation product guanylurea in soil-water systems
… compound and MET eventually ends up in wastewater treatment plants, where the compound is transformed into its bacterial dead-end product, guanylurea (GUA). Monitoring of surface, drinking and groundwaters, sediments and sludge has shown the persistence of these compounds in the environment. …
-
An Evaluation of Borehole Hydraulic Conductivity Equations and Field Determined Soil Water Characteristic Curves
… two test pads were instrumented with volumetric water content and soil water matric potential sensors to facilitate the determination of field-obtained soil water characteristic curves (SWCCs) and hydraulic conductivity functions (k-functions) for unsaturated soils. For the determination of the …
-
Effects of Anaerobically Digested Sewage Sludge on Organic Matter in Soil and Soil Water
Made available in DSpace on 2014-12-14T14:37:17Z (GMT). No. of bitstreams: 1 7624104.pdf: 3318972 bytes, checksum: d39d998d6d0186a01ed8e4894925b80c (MD5) Previous issue date: 1976
-
The Comparison of Pressure and Suction Apparatus for Soil Water Content-Pressure Head Determinations
Made available in DSpace on 2014-12-10T17:12:26Z (GMT). No. of bitstreams: 1 6604163.pdf: 1846533 bytes, checksum: 11008eec8de508a9d5ccee668a5963de (MD5) Previous issue date: 1965
-
THE CHARACTERIZATION AND MODELLING/OF SOIL WATER PATHWAYS BENEATH A CONIFEROUS HILLSLOPE IN MID WALES
… is transported to streams via subsurface water-pathways. An incontrovertible, physical characterization of these pathways within a natural, layered hillslope, has yet to be presented. This research has sought to provide such a characterization for two hillslopes - one afforested with …
-
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 …
-
Evaluation of Subirrigation, With Respect to Soil Water Flow Behavior and Effects on Plant Growth
… management, weed control and cultural practices, water management is becoming the limiting factor, even in the humid midwest, for increased production and improved quality of crops. There has been an increased interest in application of subsurface irrigation for corn and soybean production in …
-
Quantification of wildfire-induced perturbations to soil-water retention curves and their impact on rainfall runoff
… to these hazards requires understanding which soil properties are most strongly affected by wildfire and what role these changes play in runoff generation and debris-flow initiation. Previous studies have shown significant post-fire perturbations to saturated hydraulic conductivity (Ks) and …
Page 1 of 19