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 20 of 192 for “"soil conditions"”.
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Soil conditions and early crop growth after repeated manure applications
… on the effects of manure application on soil physical and chemical properties. The objective of this study was to examine the effect of repeated applications of manure on soil physical and chemical properties and to relate those effects to early plant growth and development.Four …
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Geophysical Assessment of Subsurface Soil Conditions Using Capacitively Coupled Resistivity
… drilling and sampling methods for subsurface soil investigations. The CCR method could be used to identify critical locations for drilling and sampling such as expansive clay layers and anomalies (sinkholes, unknown landfills, etc.) rather than uniformly sampling across a site. CCR surveys …
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The effect of spent mushroom compost on soil conditions and plant growth
… have been reported that evaluate SMC as a soil amendment in New Zealand, and work in other countries has been of limited scope. Therefore the objectives of this study were to: evaluate the effect of SMC on soil chemical and physical properties, and on the yield of three vegetable species; …
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Efficiency of Bioretention Cells for Stormwater Management Water Quantity Control for Low Density Residential Development: A Case Study in the Greater Toronto Area
… due to urbanization. Under favourable soil conditions, they may have the potential to fully mitigate that loss of infiltration. BRCs are also capable of reducing the amount of quantity storage required for a wide range of precipitation events, even if constructed in less-than-favourable …
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Effects of soil temperature on Sphagnum moss litter quality and decomposition in a subarctic environment
… peatlands play a significant role in global soil carbon budgets, attributed to the slow decomposition rate of Sphagnum mosses that facilitates carbon sequestration through the build-up of peat. As climate change is predicted to increase soil temperatures and decomposition rates of organic …
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The response of Banksia roots to change in water table level in a Mediterranean-type environment
… that Banksia roots are able to grow, provided soil conditions are conducive and there are no endogenous limitations to root growth at different times of the year, such as a dormancy period. The ability to grow at any time in response to soil conditions might be an essential prerequisite for …
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Geotechnical considerations for onshore wind turbines : adapting knowledge and experience for founding on South African pedocretes
… climate of the Northern Hemisphere, where soil conditions differ significantly from those of South Africa. Simultaneously, although mature, wind energy is a novel field in South Africa. Therefore, this study sought the need bridge the gap between local South African soil conditions and …
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Bioavailability of metolachlor and glyphosate in aerobic and anaerobic soils
… prevalence of anaerobic wet situations in the soil, the predictive capability for the environmental fate and bioavailability of these herbicides is based primarily on well-drained soil conditions. Anoxic events and flooding ubiquitous to agroecosystems may pose a threat for persistence and …
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Adensamento uni-dimensional de solos saturados heterogêneos e drenagem parasita em ensaios de adensamento analisados pelo método dos elementos finitos (Programa Consol)
… the analyses of problem with more realistic soil conditions, such as linear heterogenity and anisotropy of YOUNG Modulus Ē (obtained by triaxial drained tests) and permeability k. Also it permits the evaluation of the influence of the drainage between the load plate and the ring of the …
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A study of the effect of intensive cropping and the use of pure chemicals on the need for so-called "minor elements" on certain soil types and the effect of natural Chilean nitrate of soda in eliminating this need
… for these elements in crop production on field soils has not been studied intensively, nor have we sufficient knowledge as to the effect of our changing fertilizer practices on the necessity for minor elements. A number of field studies to determine the necessity of boron, manganese, zinc, …
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Composting in the Urban Environment Utilizing Yard Waste and Food Waste in Fairfax County, Virginia
Urbanization alters the natural soil structure of landscapes. This has a negative impact on the environment. This degradation of the soil in the urban environment needs management practices that protect and restore the nutrient value in the soil. Soil is one of the most essential elements of …
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Physical and Chemical Soil Properties of Ten Virginia Department of Transportation (VDOT) Mitigation Wetlands
… of Transportation (VDOT) adopted standards for soil handling and amendments to improve created non-tidal wetland soil conditions. This study was conducted in sites where these new reconstruction practices were supposedly being implemented. Specific objectives were (i) to determine the relative …
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Site disturbance and machine performance from tree length skidding with a rubber-tired skidder
… slip, 2) to determine the effects of skidding on soil physical properties, and 3) to develop recommendations to minimize the impact on soil properties while maintaining skidder performance. A Franklin 170 grapple skidder was operated in second gear under moist (19% moisture content) and wet (31% …
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Slope Stability Of Laterite Soil Embankments
… such as dams, bridges, and roads. Residual soils are generally used as fills in the construction of embankments in areas were residual soils such as laterite is the dominant soil types. Laterite soils have the characteristics of losing its shear strength with time and in fully saturated …
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The influence of steel microstructure on abrasive wear in soils
… parameters, material properties and soil constitution. Attempts have been made to correlate the ranking order for the wear resistance of similar treated steels in field and laboratory tests. It has been established that wear resistance is a function of soil constitution, steel carbide …
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Micropropagation of Paraserianthes falcataria
… germination. The explants were investigated for soil acclimation, with peat: perlite : coarse sand being the best soil conditions. In conclusion, Paraserianthes falcataria can be propagated in vitro and is a promising species for revegetation and agroforestry practices.
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Foundation settlements of English cathedrals
… piers was calculated by analyzing the site's soil conditions. The average settlement expected for a central tower pier not founded on bedrock is between 14 and 21 cm, which is greater than the average expected settlement of a nave pier, 7cm. An average differential settlement between the nave …
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