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Showing 1 to 20 of 78 for “"Sandy soils"”.
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Distribution of phosphorus in sandy soils of coastal fynbos
… with progression from less to more weathered soils. This progressive change was linked directly to the decrease in total iron content in the soils. With decreasing iron content the number of binding sites within the soil declined. Fire returned a large amount of readily available phosphorus to …
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Hydrologic Mass Balance Of Pervious Concrete Pavement With Sandy Soils
… mass balance of pervious concrete pavement in sandy soil common in Florida. In order to conduct this study, a field experiment was constructed at the UCF Stormwater Field Lab. The experiment consisted of three 4-foot tall cylindrical polyethylene tanks with 30-inch diameters. All three tanks …
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Nitrophosphate as an alternative phosphate fertiliser for acidic sandy soils
… when used as pre-plant fertilisers in acidic sandy soils commonly found in commercial agriculture. To meet this aim, two greenhouse experiments were conducted at the research facilities of Omnia (Pty) Ltd in Sasolburg, South Africa in 2013. The biomass, residual soil nutrient status and …
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The Genesis of Sandy Soils on Beach Ridges Along Lake Michigan, Extreme Northeastern Illinois
Made available in DSpace on 2014-12-14T04:57:31Z (GMT). No. of bitstreams: 1 7915319.pdf: 8538395 bytes, checksum: a6ec545bf1f553f9f4313720ce10820a (MD5) Previous issue date: 1979
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Numerical simulation of the response of sandy soils treated with pre-fabricated vertical drains
… of numerically simulating the response of sandy soils treated with earthquake drains, for liquefaction risk mitigation. This thesis describes 1)the implementation of finite 1-D elements to simulate the uncoupled mechanical and flow properties of perforated vertical (PV) drains, 2) the …
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The Effects Of Non-Plastic and Plastic Fines On The Liquefaction Of Sandy Soils
… and plasticity on the liquefaction resistance of sandy soils, and to determine methods for accounting for these effects in engineering practice. In order to help answer these questions, a program of research in the form of a laboratory parametric study intended to clarify the effects which varying …
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Bio-geochemical markers surrogated to fire induced hydrophobicity. Model system: Doñana National Park sandy soils
Los incendios forestales son un factor de perturbación importante en muchos ecosistemas terrestres, especialmente en las zonas europeas de clima Mediterráneo. Esto se debe a la confluencia de condiciones climáticas, ecológicas y socio-económicas específicas. El fuego produce cambios importantes en …
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Investigation into the use of waste tyre shreds in reinforcement of sandy soils in South Africa
… an investigation into tyre shreds mixed with sandy soils of South Africa was undertaken to assess the shear strength behaviour of the sand-tyre shred composite and to propose an alternative use of the scrap tyres produced every year.
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The effect of fertilizers including several minor elements on the growth of alfalfa on four problem sandy soils
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Soil Science, 1949
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Artificial Ground Freezing in sandy soils. Experimental and numerical analysis on the role of fine content on the thermo-hydro-mechanical behavior.
L'abstract è presente nell'allegato / the abstract is in the attachment
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Liquefaction Analysis of Level and Sloping Ground Using Field Case Histories and Penetration Resistance
… liquefaction analysis procedure for sandy soils to evaluate liquefaction susceptibility, liquefaction triggering, and post-triggering stability. The procedure incorporates the proposed relationships to estimate yield and liquefied strength ratio, and does not require a suite of …
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Crushed rock and clay amelioration of a nutrient decifient, sandy soil of Maputaland
… rock or black clay to these nutrient deficient, sandy soils would increase available nutrient concentrations and improve the growth of plants in the ameliorated soil.
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Effectiveness of Current Boron Application Recommendations and Practices on Peanut (Arachis hypogaea) in the Virginia - Carolina Region
… as it thrives in the long growing season and sandy soils. Boron (B) is widely deficient, and is more prone to leeching in sandy soils. Applied B has difficulty reaching growing points as B has reduced phloem mobility in peanuts. Current B fertilization recommendations are based on only three …
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Environmental dynamics of Benomyl and Thiabendazole
… using silty clay loam, silty loam and sandy soils as well as Ca-bentonite. These studies indicated that both fungicides were adsorbed to the highest degree on silty clay loam, followed by silty loam and sandy soils. Their adsorption on Ca-bentonite was found to be a function of the pH …
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The Effect of Pulp Mill Effluents on the Carbon Dioxide Evolution of Three East Texas Soils
… were applied to jars containing three East Texas soils. Carbon dioxide evolution was then measured with an infrared gas analyzer to determine the effect of the effluents on the respiration of soil microorganisms. The relationship between effluent treatments was not statistically significant, …
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Utilisation des composts de biodéchets ménagers pour l'amélioration de la fertilité des sols acides de la province de Kinshasa (République Démocratique du Congo)
… methods for sustainable management of the sandy soils of the province of Kinshasa (Democratic Republic of Congo), in order to ensure and guarantee the adequate food security. It consists of a scientic research of the use of composts produced from household organic waste in improving the …
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Influence of nitrogen rate on corn grain yield, nitrogen use efficiency, and nitrate leaching on coarse-textured Minnesota soils
… (N) is often the limiting nutrient in irrigated sandy soils. Nitrogen poses a threat to water quality in its nitrate form because it is easily leached through the root zone of the corn (Zea Mays L.) crop following rain and irrigation events. Leaching is enhanced in sandy soil conditions because …
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Análise de fundações de máquinas sujeitas a excitações verticais
… on silty clay soil from Vicksburg (WES) (USA), sandy soils of Eglin (USA) and silty sand from Volta Redonda (BRAZIL) are analysed. The Brazilian soil was of young residual gneiss type. Finally, this work, also, shows design criteria, calculations methods and soil parameters to be used in dynamic …
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BIOCHAR AMENDMENT TO IMPROVE SOIL PRODUCTIVITY WITH PARTICULAR EMPHASIS ON THE INFLUENCE OF SOIL TYPE
… by up to 48% (22% on average), but silty soils were less responsive. BD was reduced by up to 19% (10% on average). In a three-season outdoor pot trial with spring wheat (Triticum aestivum), four soil types were treated with biochar (at 0%, 0.1%, 0.5% & 2.5%). Biochar affected crop yield …
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Three-Dimensional Simulations of the Behaviour of Layered Soils under Simple Shear
… explores the behavior of uniform and layered soils under simple shear using 3D numerical analyses, focusing on the influence of a thin clay layer within sandy soils on strength and liquefaction resistance. Comparison of 2D and 3D simulations of direct simple shear (DSS) tests highlights …
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