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.
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Showing 1 to 11 of 11 for “"sodicity"”.
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SOIL SALINITY AND SODICITY OF GALVESTON AND PELICAN ISLANDS, TEXAS
… that displays the current soil salinity and sodicity levels on Galveston and Pelican Islands. The existing USDA Natural Resource Conservation Service (NRCS) Galveston County Soil Survey map units were used as a base for the project. ArcGIS Desktop software was used to establish a sampling …
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Sustainability of the Indus Basin: Impact of tertiary salinity/sodicity on wheat productivity, damage assessment and future public policy
The Indus Basin of Pakistan has the largest contiguous canal irrigation system in the world. However, the canal system, as important as it is, has overshadowed the equally important supplementary source of irrigation in the Basin--the groundwater. Today, over 40% of the annual irrigation …
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Clay movement in a saline-sodic soil toposequence
… in the Mt. Lofty Ranges (near Mt. Torrens) soil sodicity was the dominant factor in causing clay to disperse in the eroded area along the foot slopes, wheras in non-eroded areas of the mid-slopes and on the stream banks, the dispersive power of sodicity was attenuated by the flocculative power of …
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Soil conditions and early crop growth after repeated manure applications
… flax emergence, infiltration rate, salinity, sodicity, coefficient of linear extensibility (COLE) and modulus of rupture were measured under controlled conditions in intact cores of soil removed from all five experimental sites. All soils were treated with a simulated rainfall from a Guelph …
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The effect of oily waste and nutrient amendments on soil fertility and oat growth
… effect with regard to soil salinity and sodicity. Addition of sludge increased the organic carbon content of the soil and fertilizer application appears to increase the conversion of oily waste carbon to humus. Combination of fertilizer with sludge had no effect on accumulative CO2 …
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Spatial Variability of Saline and Sodic Soils in the Black Glaciated Region of the Northern Great Plains, USA
… Past research has focused on salinity and sodicity in irrigated agricultural systems in semi-arid and arid climates. Due to the disconnect between prior research and current problems in this region, it is necessary to assess widely used laboratory methods, and determine if short cuts can be …
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Evaluation of the potential use of langbeinite (potassium sulfate / magnesium sulfate) as a reclaiming material for sodic and saline sodic soils.
Soil sodicity/salinity and scarcity of water are important constraints of agricultural development in arid lands. Excessive exchangeable sodium of sodic and saline sodic soils cause swelling of clays and dispersion of colloidal particles, and results in poor soil-water-air relationships. Reclaiming …
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Comparison of soil properties and Kentucky bluegrass shoots mineral composition prior to and after 10-11 years irrigation with recycled water
… recycled water irrigation indicated potential sodicity problems. Calcium based product applications reduced ESP at soil surface depths. In contrast, significant increase in ESP was found at deeper soil depths. No increase in soil nitrate-N was observed over 5 and 11 years with recycled water …
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Study of agronomic factors important to the establishment of various perennial grass bioenergy feedstock species
… water having different levels of salinity and sodicity on seed germination and plant growth in several populations of switchgrass and prairie cordgrass. Higher levels of salinity negatively impacted seed germination with switchgrass more so than with prairie cordgrass overall, although …
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Characterizing the Impact of Freshwater Salinization on Engineered Ecosystems: Implications for Performance, Resilience, and Self-Repair Through Phytoremediation
Stormwater detention basins are commonly used in the Eastern United States to temporarily store and attenuate stormwater runoff, and also serve as habitats for native and exotic plants. However, during winter, these basins receive saline runoff from road salt application, which contributes to …
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Effect of polyacrylamides on the physical properties of some light-textured soils.
… mix the PAM solutions in terms of salinity and sodicity (distilled water, 10 and 20 mmol(+) salt/L, using either sodium chloride, calcium chloride, or both). I measured the effects of PAM on pore-size distribution of one of the sands (by the water retention characteristic), on water repellence …