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Tesi sul tema "Soils Zinc content"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 28 gennaio 2023

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1

PULS, ROBERT WILLIAM. "ADSORPTION OF HEAVY METALS ON SOIL CLAYS (KAOLINITE, CADMIUM, MONTMORILLONITE, ZINC)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183889.

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Abstract (sommario):

Metal cation adsorption is the predominant chemical mechanism governing the attenuation of toxic metal movement in soils. Clay minerals are the primary adsorbent surfaces in soils due to their ubiquitous nature and large reactive surface area. This study examined the relative affinity of the metals cadmium, nickel and zinc for the clay minerals kaolinite and montmorillonite. The influence which different mineral adsorbents and different complexing ligands in solution have on the adsorption of metal ions was assessed using the Hard-Soft Acid-Base Principle as a theoretical framework for predict

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2

Wijesundara, Chandra. "Response of corn to high levels of CuSO₄ and ZnSO₄ applications." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/45959.

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Abstract (sommario):

High levels of Cu and Zn application to agricultural soils are considered to pose a potential hazard to plants and animals. The levels of Cu and Zn which can be safely added to cropland have yet to be established. This study was conducted on a Davidson silty clay (Rhodic Paleudult) to determine the response of corn (<u>Zea mays</u> L.) to cumulative application of up to 469 kg Cu and 1032 kg Zn ha⁻¹ as sulfates over the 22-year period from 1967 through 1988. Neither corn grain nor silage yield was affected by the metal additions even though the cumulative amount of Cu and Zn added exceeded the

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3

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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4

Owojori, Olugbenga J. (Olugbenga John). "Influence of clay content and salinity on the bioavailability and toxicity of metals (copper and zinc) to soil organisms." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1484.

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Abstract (sommario):

Thesis (PhD (Botany and Zoology))—University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: Metal pollution is a problem of increasing global concern. It could arise from industrial activities, as well as pesticide use in agriculture, among other sources. For adequate protection of the soil ecosystem from metal toxicity, the bioavailability of metals must be properly evaluated. A plethora of soil factors affect the bioavailability of metals to soil organisms. These include pH, clay and organic matter contents, salinity among others. While much is known about the influence of some of these p

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5

Fotovat, Amir. "Chemistry of indigenous Zn and Cu in the soil-water system : alkaline sodic and acidic soils." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phf761.pdf.

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Abstract (sommario):

Copies of author's previously published articles inserted. Bibliography: leaves 195-230. In this study the soil aqueous phase chemistry of Zn and Cu in alkaline sodic soils are investigated. The chemistry of trace metal ions at indigenous concentrations in alkaline sodic soils are reported. Metal ions at low concentrations are measured by the graphite furnace atomic absorption spectrometry (GFAAS) technique.

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6

Ramesh, Sunita. "Molecular mechanism of zinc uptake and regulation in cereals." Title page, table of contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phr1724.pdf.

Testo completo

Abstract (sommario):

Bibliography: leaves 174-204. "This work provides a starting point for understanding the molecular mechanisms of zinc uptake and the regulation of zinc transport in cereals. Zinc efficient cereals would yield more on soild with low zinc and could potentially result in increased zinc content grain."

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7

Singbo, Arnaud. "The effect of zinc and soil ph on grain yield and nutrient concentrations in spring wheat cultivated on potted soil." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2845.

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Abstract (sommario):

Thesis (MTech (Agriculture))--Cape Peninsula University of Technology, 2018.<br>Zinc deficiency on various soil types have been reported in arable soils of sub Saharan Africa (SSA) including South Africa. A pot trial was conducted at the Cape Peninsula University of Technology, Wellington campus to investigate the interaction of different application rates of Zn at various soil pH on the grain yield and quality of spring wheat in a completely randomized factorial design replicated three times. The four soil pH tested were: pHA: 5.1, pHB: 5.6, pHC: 6.1, pHD: 6.6 which correspond to lime applica

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8

Gettier, Stacy W. "Corn response to long-term application of CuSO₄, ZnSO₄ and Cu-enriched pig manure." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/49779.

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9

Henshel, Judy 1958. "Copper, manganese, and zinc in Puerco River sediments." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276725.

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Abstract (sommario):

A study was conducted to test for the presence of heavy metals (Cu, Mn, and Zn) in surface sediments of the Puerco River channel in the aftermath of a toxic spill in 1979 near Church Rock, New Mexico. Analysis of samples from five sites downstream from the spill showed that these substances were not present in unusually large amounts, though an increasing gradient of metal concentration with distance downstream was revealed. Statistical analysis revealed the Cu, Mn, and Zn were associated with clay and silt, soil organic matter, organic carbon, and carbonates, all of which existed as extraneou

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10

Wheal, Matthew Simon. "The influence of chlorsulfuron on the uptake and utilization of zinc by wheat /." Title page, table of contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phw556.pdf.

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11

Sadeghzadeh, Behzad. "Mapping of chromosome regions associated with seed zinc accumulation in barley." University of Western Australia. School of Earth and Geographical Sciences, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0204.

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Abstract (sommario):

[Truncated abstract] Zinc deficiency in crops is the most widespread micronutrient deficiency, with about 50% of the cereal-growing areas worldwide containing low levels of plant-available Zn. Zinc plays multiple key roles in different metabolic and physiological processes; its deficiency in crops reduces not only grain yield, but also the nutritional quality of grains. Insufficient micronutrient intake, particularly Zn and Fe, afflicts over 3 billion people in the world, mainly in developing countries. Increasing the amount of Zn in food crops can contribute to improving the Zn status of peop

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12

Mfeka, Nonkululeko. "Morphology and mineral content of cowpea lines in response to planting date and zinc application rate." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2672.

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Abstract (sommario):

Thesis (MTech (Agriculture))--Cape Peninsula University of Technology, 2017.<br>Cowpea (Vigna unguiculata (L.) Walp) is an important grain and fodder legume grown around the world. It is a dual purpose grain legume crop, providing food for man and livestock. Cowpea is identified as a potential crop to diversify food production, minimize production input by improving soil fertility and improve micronutrients of seed, therefore, improving human nutrition. There is limited information available on cowpea production and suitable agronomic practices including planting date to best suit different en

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13

Rashid, Abdul. "Mapping zinc fertility of soils using indicator plants and soil analyses." Thesis, 1986. http://hdl.handle.net/10125/9250.

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14

Boening, Dean W. "Evaluation of an automated respiration method used in assessing the toxicity of zinc on soil microorganisms." Thesis, 1992. http://hdl.handle.net/1957/37029.

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15

Fotovat, A. "Chemistry of indigenous Zn and Cu in the soil-water system : alkaline sodic and acidic soils / by Amir Fotovat." 1997. http://hdl.handle.net/2440/19068.

Testo completo

Abstract (sommario):

Copies of author's previously published articles inserted.<br>Bibliography: leaves 195-230.<br>xx, 320 leaves : ill. (some col.) ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>In this study the soil aqueous phase chemistry of Zn and Cu in alkaline sodic soils are investigated. The chemistry of trace metal ions at indigenous concentrations in alkaline sodic soils are reported. Metal ions at low concentrations are measured by the graphite furnace atomic absorption spectrometry (GFAAS) technique.<br>Thesis (Ph.D.)

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16

Ramesh, Sunita A. "Molecular mechanism of zinc uptake and regulation in cereals / Sunita Ramesh." 2002. http://hdl.handle.net/2440/21811.

Testo completo

Abstract (sommario):

Bibliography: leaves 174-204.<br>xiii, 204 leaves : ill. (some col.) ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>"This work provides a starting point for understanding the molecular mechanisms of zinc uptake and the regulation of zinc transport in cereals. Zinc efficient cereals would yield more on soild with low zinc and could potentially result in increased zinc content grain."<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Horticulture, Viticulture and Oenology, 2002?

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17

Ramesh, Sunita A. "Molecular mechanism of zinc uptake and regulation in cereals / Sunita Ramesh." Thesis, 2002. http://hdl.handle.net/2440/21811.

Testo completo

Abstract (sommario):

Bibliography: leaves 174-204.<br>xiii, 204 leaves : ill. (some col.) ; 30 cm.<br>"This work provides a starting point for understanding the molecular mechanisms of zinc uptake and the regulation of zinc transport in cereals. Zinc efficient cereals would yield more on soild with low zinc and could potentially result in increased zinc content grain."<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Horticulture, Viticulture and Oenology, 2002?

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18

Holloway, R. E. (Robert Edgcumbe). "Zinc as a subsoil nutrient for cereals." 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phh7454.pdf.

Testo completo

Abstract (sommario):

Bibliography: leaves 290-324. This thesis investigates two avenues suggested by Graham and Ascher (1993) for approaching the problems of subsoil infertility, with particular reference to zinc. Field experiments with wheat and barley were established at Minnipa, on Eyre Peninsula in South Australia to investigate the effects of applying nutrients (principally zinc, nitrogen and phosphorus) to the subsoil to a depth of 0.4 m with a modified deep ripper. A deep pot experiment was designed to measure the zinc efficiencies (in terms of dry matter production) of a range of species grown in siliceous

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19

Holloway, R. E. (Robert Edgcumbe). "Zinc as a subsoil nutrient for cereals / by R.E. Holloway." Thesis, 1996. http://hdl.handle.net/2440/18920.

Testo completo

Abstract (sommario):

Bibliography: leaves 290-324.<br>xxii, 324 leaves, [5] leaves of plates : col. ill. ; 30 cm.<br>This thesis investigates two avenues suggested by Graham and Ascher (1993) for approaching the problems of subsoil infertility, with particular reference to zinc. Field experiments with wheat and barley were established at Minnipa, on Eyre Peninsula in South Australia to investigate the effects of applying nutrients (principally zinc, nitrogen and phosphorus) to the subsoil to a depth of 0.4 m with a modified deep ripper. A deep pot experiment was designed to measure the zinc efficiencies (in terms

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20

Wheal, Matthew Simon. "The influence of chlorsulfuron on the uptake and utilization of zinc by wheat / Matthew Simon Wheal." Thesis, 1996. http://hdl.handle.net/2440/18957.

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Abstract (sommario):

Bibliography: leaves 153-156.<br>ix, 156 p. : ill. ; 30 cm.<br>This thesis describes the experiments conducted to determine the mechanisms that cause the decline in shoot Zn concentration and the responses of the wheat plant to Zn deficiency and chlorosulfuron stress. Root tip extension is used as a measure of wheat root growth during exposure to the sulfonylurea herbicide chlorsulfuron. Wheat plants differing in Zn efficiency are grown in HEDTA chelate-buffered nutrient solution in controlled conditions.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Plant Science, 1997

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21

Huang, Chi-Jung, and 黃琦容. "Effect of copper, zinc and selenium added to soil on their content in onion plant (Allium cepa, L) and antioxidation capability." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/39996154276662333780.

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Abstract (sommario):

碩士<br>大仁科技大學<br>環境管理研究所<br>95<br>The purpose of this study was to investigate the relationship between soil concentration of copper, zinc and selenium; and the tendency of onions (Allium cepa, L) to absorb these elements. copper, zinc and selenium solutions of 2.5ppm, 5ppm, 10ppm, 15ppm were tested. At the beginning of the experimental growing period, onions which had not been treated with fertilizer or pesticides were equated for size and transplanted to controlled soil. Samples were picked and analyzed 5, 7, 9 and 11 days after moving to the controlled soil. During the experimental growing p

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22

Guo, Xin-Li, and 郭信利. "Effects of sulphur application or tillage on the growth of sunflower(Helianthus annuus L.) or Azolla pinnata and the absorption of elements in the high zinc content organic farming vegetables garden soil." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/64154635404179728544.

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Abstract (sommario):

碩士<br>國立屏東科技大學<br>農園生產系所<br>96<br>Livestock manure usually includes a large amounts of copper and zinc, which causes increasing copper and zinc content in the soil, influences soil quality and plant growth, when long-term or large amount application in the soil. Phytoextraction is utilizing plants to accumulate the pollutant from contaminated soil into the tissue of plants, which were then harvested and incinerated, reduced the content of pollutant in the soil. This study is divided two parts, one part is sunflower growth experiment, and one part is Azolla pinnata growth experiment. In pot exp

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