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Dissertations / Theses on the topic 'Effect of soils'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Grieger, Gayle. "The effect of mineralogy and exchangeable magnesium on the dispersive behaviour of weakly sodic soils /." Title page, table of contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phg8478.pdf.

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2

Hoyle, Frances Carmen. "The effect of soluble organic carbon substrates, and environmental modulators on soil microbial function and diversity /." Connect to this title, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0050.

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3

Mui, Tak Sang. "The shearing effect of suction /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202005%20MUI.

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4

Lanza, G. R., and Phillip R. Scheuerman. "Effect of Soil Amendments on In Situ Biodegradation in Creosote Contaminated Soils." Digital Commons @ East Tennessee State University, 1996. https://dc.etsu.edu/etsu-works/2910.

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5

Tucker, Alison. "The effects of cyclic freeze-thaw on the properties of high water content clays /." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63372.

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6

DeBano, Leonard F., and Malchus B. Jr Baker. "The Effect of Hydrophobic Soils on Infiltration, Runoff, and Erosion in Wildland Soils." Arizona-Nevada Academy of Science, 1998. http://hdl.handle.net/10150/296501.

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7

Masiyandima, Mutsa Cecelia. "The effect of tine geometry on soil physical properties." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23284.

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The physical state of the seedbed is of importance to the plant environment as it influences some important processes in the soil such as seedling emergence, water and solute transport, and ease of root penetration. This is affected to a large extent by tillage process, the tillage implement type and the geometry of the implement used.<br>A field experiment was carried out on a clay soil to determine the effect of the geometry of bladed tillage implements on some soil physical properties after tillage. The soil properties evaluated were bulk density, mean clod size distribution and total pore

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8

Kennette, Debra. "The bioavailability of trace metals to soil invertebrates in urban contaminated soils." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/MQ44194.pdf.

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9

Xu, Jia. "Investigation of spatially graded distribution of pore fluid effect on wetting-induced soil collapse /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202008%20XU.

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10

Byiringiro, Alfred. "Effect of paper mill ash on properties of expansive soils." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86287.

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Thesis (MEng)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Expansive soils, one of the problematic soils, are encountered on all continents with exception of polar continents. Problems caused by their heaving and shrinking behaviour, particularly to light structures, have been reported from different countries to place large financial burden on developers. For this reason, many techniques have been developed and applied to prevent and/or remediate the damage caused by these soils. Soil stabilization with traditional chemical additives has been applied successfully since ancient times.

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11

Farr, C. R. "Nitrogen Stabilizer Effect on Nitrate Nitrogen Management in Soils." College of Agriculture, University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/204454.

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12

Gusli, Sikstus. "Effect of methods of wetting and rainfall characteristics on crusting and hardsetting of a red-brown earth." Title page, abstract and table of contents only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phg982.pdf.

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Includes bibliographical references. The beneficial effects of tillage are often negated in Australian soils by poor aggregate structural stability. If irrigation or rain falls on exposed freshly tilled soil, crusting or harsetting often develops on drying. Rainfall intensity, kinetic energy, rate of wetting, antecedent water content and soil management history have been implicated in aggregate breakdown.

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13

Neilsen, Denise. "Characterization and plant availability of zinc in British Columbia orchard soils." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72835.

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14

Kennedy, Jane. "Factors affecting the retention of dissolved organic carbon in upland soils." Thesis, University of Aberdeen, 1997. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU100041.

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The aim of this thesis was to investigate soil and environmental factors which influence the adsorption of DOC in upland, moorland soils. In Chapter 1 climate change, the greenhouse effect and the global carbon cycle are discussed briefly. A more detailed discussion of carbon cycling in the plant-soil-water system focuses on DOC retention in podzols and the review concludes with a summary of the aims of this thesis. A peaty podzol has greater potential to retain DOC than the other major soil types within the Glen Dye catchment, N.E. Scotland. Retention of DOC by physico-chemical surface intera

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15

Chorom, Mostafa. "Behaviour of alkaline sodic soils and clays as influenced by pH and particle change." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phc551.pdf.

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Copies of author's previously published articles inserted. Bibliography: leaves 173-196. The objective of this thesis is to investigate the factors affecting swelling and dispersion of alkaline sodic soils containing lime and the ways to manage these soils to improve their physical condition. Studies on pure clay systems are included to understand the fundamental process involved in swelling and dispersion of pure and soil clays.

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16

Chang, Jingwei, and 常经纬. "Effect of pore water salt content on the coefficient of earth pressure at rest of fine-grained soils." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/202253.

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17

Yusoff, Wan Abdullah bin Wan. "Effect of zeolites on soil characteristics, leaching and surface pollutant losses form soils of contrasting textures." Thesis, Lancaster University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531713.

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18

Fitzgerald, Lydia A. "EFFECT OF BEDDING TYPE AND SOIL INCORPORATION ON NITROGEN MINERALIZATION RATE OF BROILER LITTER AMENDED SOILS." UKnowledge, 2019. https://uknowledge.uky.edu/pss_etds/123.

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Broiler litter (BL) is a high value manure available to Kentucky crop producers to utilize as a fertilizer. The rate of BL application, timing of application, and method of application are all important factors to take into account when utilizing BL. A laboratory incubation was conducted to observe nitrogen (N) mineralization rates of BL amended soils over time under different conditions. Different application methods, application rates, watering frequencies, and bedding materials were used to determine their influence on N mineralization. Broiler litter applied on the soil surface, at lower r

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19

Regmi, Sanjeev. "EFFECT OF PLASTICITY AND INITIAL COMPACTION CONDITIONS ON SOIL WATER CHARACTERISTICS CURVE OF FINE-GRAINED SOILS." OpenSIUC, 2019. https://opensiuc.lib.siu.edu/theses/2625.

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The soil water characteristics curve (SWCC) of a soil plays an important role in study of unsaturated soil mechanics. The behavior of unsaturated soil is a complex phenomenon to understand and the direct measurement of unsaturated soil properties in laboratory or in field is costly and time consuming. Knowing the SWCC of a soil is useful in estimating the unsaturated property of a soil, which is close to the natural soil conditions and can be used in effective design procedure. The present study deals with the effect of plasticity and initial compaction conditions of a soil in the SWCC by usin

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20

Eid, Walid Khaled. "Scaling effect in cone penetration testing in sand." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/49849.

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The Cone Penetration Test (CPT) was developed originally in Holland in the 1930’s as a device which provides a small scale model of a pile foundation. Early versions were simple cone points for which the only measurement was the thrust required to push the point through the ground. Over the past 20 years, the cone was standardized to a tip area of 10 cm², and an electrical version was produced, which allows for continuous measurement of the cone tip resistance and sleeve friction along with a computer-based data acquisition system. The electrical cone represents a significant step forward for

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21

Kunberger, Tanya Marie. "Temperature Effect on Desorption Kinetics of Benzene on Various Soils." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20011107-090112.

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<p> Since the advent of diesel fuel use, insufficient storage and inadequate transport and disposal practices have resulted in widespread contamination of the subsurface environment. Beginning in the 1970?s, the United States EPA has established a number of regulations controlling current and future storage, transport, and disposal efforts and address the need to remediate existing contaminated sites. However, regulations provide only the desired goal, not a roadmap of how to accomplish remediation. It falls then, to individuals in research and industry, to devise techniques effective in reduc

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22

Parker, Ronald Dean 1948. "The effect of spatial variability on output from the water erosion prediction project soil erosion computer model." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/191165.

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Spatial variability is all that stands between hydrology and science, forcing us to deal in probabilities and averages. Because of scale, we can not consider forces on individual soil particles, water molecules and solute ions when addressing human size problems. We must therefore look at aggregate properties and mean values for parameters and inputs in computer modeling of hydrologic phenomena. This research explores the impact of spatially variable inputs on the Water Erosion Prediction Project soil erosion computer program. Distributions of input variables are generated and assigned randoml

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23

Quinn, Turlough. "Rate effects in fine grained soils." Thesis, University of Dundee, 2013. https://discovery.dundee.ac.uk/en/studentTheses/92451824-2c3f-4162-8626-502cfe9424d6.

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The strain rate dependent behaviour of fine grained soils is an important aspect of geotechnical engineering. During dynamic or rapid events such as earthquakes and rapid pile testing, a fine grained soil will display significantly different behaviour than may be observed over the long life span of a structure. There is currently little understanding of the factors which influence the behaviour of fine grained soils during dynamic events (extremely high strain rates), making their response difficult to predict. This research investigates the behaviour of fine grained soils subjected to a wide

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24

Albertus, Randal Marius Colin. "The influence of different management practices on soil faunal activity in vineyard soils." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/53129.

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Thesis (MSc)--Stellenbosch University, 2002.<br>ENGLISH ABSTRACT: Food demands for the ever-increasing human population is increasing the pressure on the agricultural sector to produce more food. In order to satisfy these demands, farmers are turning to chemical biocides for the control of pest species to produce greater crop yields. All pesticides must be toxic or poisonous to the target species they intend to control. Unfortunately, most pesticides are toxic or poisonous to non-target organisms as well, with detrimental effects on their health. Organic farming was developed to enhance

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25

Park, Jin Young. "A critical assessment of moist tamping and its effect on the initial and evolving structure of dilatant triaxial specimens." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/23949.

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26

Solomon-Wisdom, Grace Oyiza. "The effect of in situ spatial heterogeneity of lead in soil on plant uptake." Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/54284/.

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The understanding of the spatial distribution of lead (Pb) in soil is important in the assessment of potential risks and development of remediation strategies for Pb contaminated land. In situ heterogeneity of Pb was measured at two heavily contaminated sites in the United Kingdom using the Portable X-ray Fluorescence Spectrometer (P-XRF) over a range of spatial scales (0.02 to 50 m). The pattern of the distribution of Pb was very variable, and when expressed as heterogeneity factor (HF), it ranged from 1.2 to 3.2 (highly heterogeneous). The effect of such Pb heterogeneity on plant uptake was

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27

Wu, Shengchun. "Enhanced phytoextraction of metal contaminated soils using beneficial microorganisms." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/589.

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28

Golding, Kirsty Ann. "The effect of waste disposal on soils in and around historic small towns." Thesis, University of Stirling, 2008. http://hdl.handle.net/1893/492.

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Soils in the urban environment are distinctive in that they are modified through waste amendments. Consideration has been given to how urban soil properties reflect current human influence; however, recent studies highlight their potential as historical archives. The impact of waste disposal on the nature, properties and formation of urban soils is significant, especially in historic small towns where the extent and complexity of refuse management practices is only just emerging. This study uses a multi-method approach to characterise and understand modes of urban anthrosol formation in three

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29

Arjoon, Diane S. "Effect of water table management on pesticide movement in two Québec soils." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69596.

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A three year field study was undertaken to assess the influence of water table management, namely subsurface irrigation and controlled drainage, on the movement of pesticides through the soil profile into ground water. The herbicides under investigation were prometryn on an organic soil, and metolachlor on a sandy soil. Both soil and groundwater were collected and analyzed. The results presented are those obtained in the first two years of the project.<br>In the organic soil, herbicide leaching was greatly reduced due to the management of the water table. The pesticide remained higher in the s

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30

Woldeselassie, Bruck Haile. "The Effect of Blasting in Layered Soils, Example from Finneidfjord, Norway." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bygg, anlegg og transport, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18501.

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A case study on the role of blast vibration on the 1996 Finneidfjord landslide was carried out. This catastrophic landslide which claimed four lives has been under investigation during the past decade. The study area has been developed as natural laboratory and different field and lab investigation have been carried out in the process of understanding the event bed. The mechanically weak layer that the landslide used as a slip surface is found 2.8-3.1m below the sea bed and is composed of loose sand layer sandwiched between two very low permeable clay layers. The main focus herein is the effec

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31

Buckley, Meghan Elizabeth. "Effect of tillage on the hydrology of claypan soils in Kansas." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/943.

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32

Young, Sarah Louise. "Effect of nitrogen fertiliser on bacterial community dynamics in arable soils." Thesis, University of Essex, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423712.

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33

Lukezic, Craig. "The Effect of Soils on Settlement Location in Colonial Tidewater, Virginia." W&M ScholarWorks, 1986. https://scholarworks.wm.edu/etd/1539625336.

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34

Edwards, Cristie LeAnne. "Effect of Synthetic Chelating Agent Application to Soils on Phosphorus Availability." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23690.

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Fertilizer phosphorus (P) can become unavailable to crops due to immobilization of P in acidic soils through forming chemical bonds with iron (Fe) and aluminum (Al) amorphous oxides. Organic chelating agents form strong bonds with metals in soil and may reduce P binding with Fe and Al. Ethylenediamine tetraacetic acid (EDTA), hydroxyethyl ethylenediamine triacetic acid (HEEDTA), gluconic acid (GA), and citric acid (CA) were tested to determine their influence on water-soluble P (WSP), Mehlich-1 P and Mehlich-3 P in Loam and Sand soils fertilized with P and incubated for 49 days. Soil P sorp

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35

Gamby, Rebecca L. "EFFECT OF LAND USE ON MERCURY IN SOILS OF SOUTHWEST OHIO." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401480523.

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36

Tika, Theodora Michael. "The effect of fast shearing on the residual strength of soils." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/7640.

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37

Lumbuenamo, Sinsi Dianza 1954, and Sinsi Dianza 1954 Lumbuenamo. "Litter cover effect on soil spectral response." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276620.

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In order to assess the influence of litter cover on soil background spectral response, trays of dry Lehmann Lovegrass (Eragrostis lehmanniana) were used at three different densities (635, 1015, 2815 Kg/ha) over three different soil backgrounds (Whitehouse sandy clay loam, Superstition sand, and Cloversprings loam). After analysis, spectral measurements made with a Barnes Multi-Modular Radiometer revealed that, soil-litter mixtures exhibit an oil like spectral behavior in the (0.45-2.30 m) waveband range. Mulched soils could not be discriminated from bare soils solely on the basis of the spectr

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38

Adsero, Matthew E. "Effect of jet grouting on the lateral resistance of soil surrounding driven-pile foundations /." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2381.pdf.

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39

Zhang, Xiong. "Consolidation theories for saturated-unsaturated soils and numerical simulation of residential buildings on expansive soils." Texas A&M University, 2004. http://hdl.handle.net/1969.1/2747.

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The coupled and uncoupled consolidation theories for saturated-unsaturated soils have been discussed. A new method for constructing the constitutive surfaces for saturated-unsaturated soils has been proposed. The consolidation processes for saturated-unsaturated soils have been explained by thermodynamic analogue. One dimensional consolidation theory for saturated-unsaturated soils is presented and a new method is proposed to calculate the immediate settlement, total settlement and the time history of the consolidation settlement manually in the same way as what we have done for saturated soil

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40

PFEIFFER, CHARLES MICHAEL. "GROWTH AND NUTRITION OF MYCORRHIZAL GUAYULE IN SALINE SOILS (ENDOMYCORRHIZAE, GLOMUS INTRARADICES, SALINITY)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183780.

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Inoculation of Parthenium argentatum (guayule) with an endomycorrhizal fungus (Glomus intraradices) increased the growth of guayule in saline and non-saline soils low in available phosphorus. Addition of 100 ug/g of P as Ca(H2PO4)2 to soils low in available phosphorus was as efficient as G. intraradices in stimulating the growth of guayule. The concentrations and total plant accumulations of minerals within guayule shoots varied depending on growth of the plants and the minerals assayed. In most cases, the concentrations of Cu, Zn, Mn, Na and Cl increased in the shoot tissues of guayule grown

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41

Botha, Pieter Barend. "The effect of long-term tillage practices on selected soil properties in the Swartland wheat production area of the Western Cape." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/79906.

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Thesis (MScAgric)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: The effect of long-term tillage on basic soil properties with respect to sustainability was investigated in this dissertation. Over the last three decades soil conservation has become an important prerequisite for sustainable agriculture. The primary aim of this study was to evaluate the effect of different tillage practices on the physical and some of the chemical properties of soil after 37 years of continuous application. This study was conducted on the Langgewens experimental farm, 18 km north of Malmesbury in the West

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42

Nel, Werner. "The abundance and diversity of meso- and macrofauna in vineyard soils under different management practices." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50463.

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Thesis (MSc)--Stellenbosch University, 2005.<br>ENGLISH ABSTRACT: The agricultural sector in South Africa relies heavily on the use of pesticides to protect crops against pest organisms. Pesticides can affect non-target organisms such as the meso- and macrofauna in the soil detrimentally. Since these organisms play an important role in the processes of mineralization and decomposition in the soil and contribute to soil fertility, it is important that they are protected. A large amount of published literature exists on the biological importance of soil meso- and macrofauna and the effects

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43

Schoone, Marion. "Effect of organic matter on sorption of polycyclic aromatic hydrocarbons interaction with natural soils, soils containing anthropogenic organic matter, anthropogenic organic materials and particle size fractions from soils /." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=96193400X.

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44

Cook, Nicola. "Bioavailability of trace metals in urban contaminated soils." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34934.

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There are two main components to the research: the theoretical and the experimental. Chapter 2 contains an analysis of the state of soil quality guidelines and the scientific methods used to determine them. A number of recommendations to improve soil quality criteria for trace metals are offered including the importance of considering bioavailability and the need to use realistic conditions, trace metal sources and organisms.<br>A critical review of the literature dealing with predicting the availability of trace metals to plants is presented in Chapter 3. We found little agreement among hundr

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45

Shongwe, Gideon Ngaka. "Effect of pH on aluminum-orthophosphate interactions in some acidic Swaziland soils /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487599963590869.

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46

Hoyle, Frances Carmen. "The effect of soluble organic carbon substrates, and environmental modulators on soil microbial function and diversity." University of Western Australia. School of Earth and Geographical Sciences, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0050.

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[Truncated abstract] The principal aim of this thesis was to examine the response of the microbial community to the addition of small amounts (<50 μg C g-1 soil) of organic C substrates (‘trigger molecules’) to soil. This addition is comparative to indigenous soluble C concentrations for a range of soil types in Western Australia (typically measured between 20 and 55 μg C g-1 soil). Previously it has been reported that the application of trigger molecules to European soils has caused more CO2-C to be evolved (up to six fold) than was applied . . . Findings from this study indicated that there

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47

Bernal, Blanca. "Carbon Pools And Profiles In Wetland Soils: The Effect Of Climate And Wetland Type." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1218226611.

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48

Chiu, Ki Kin. "Using organic amendments and chelates for remediation of metal-contaminated soils by vetiveria zizanioides." HKBU Institutional Repository, 2003. http://repository.hkbu.edu.hk/etd_ra/417.

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49

Wu, Ronggui. "The effect of land use on soil fertility and phosphorus dynamics in sub-alpine grassland soils of Gansu, China." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ63939.pdf.

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50

Wu, Dan Hua. "The effect of water potential on soil microbial biomass." Thesis, University of Aberdeen, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.290290.

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This study investigated the effect of water potential on soil microbial C and N pools. Two soil types were treated with additions of salt solution to establish osmotic water potentials, and by ceramic plate - pressure chamber apparatus to establish matric water potentials. Soils were then subjected to short-term incubations. Soil microbial C and N contents (BC and BN) were measured mainly by the fumigation-extraction and fumigation-incubation methods. Results showed that both Microbial C and N pools were markedly affected by soil water potential. The soil microbial C content always showed an i

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