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Dissertations / Theses on the topic 'Soils acidity'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Myers, Jed Anthony. "Reduction in exchangeable magnesium upon liming acid soils of Ohio /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487260859494085.

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2

Morgan, Marcus John. "Optimal prediction of coastal acid sulphate soil severity using geographic information systems." Access electronically, 2006. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20070208.153133/index.html.

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3

Sakala, Godfrey Mekelani. "The effects of incorporating plant residues on soil acidity in management of tropical soils." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263047.

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4

Murata, Monica Rujeko. "The impact of soil acidity amelioration on groundnut production and sandy soils of Zimbabwe." Diss., University of Pretoria, 1995. http://upetd.up.ac.za/thesis/available/etd-08152003-155125.

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5

Fölster, Jens. "Catchment hydrochemical processes controlling acidity and nitrogen in forest stream water /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-6074-3.pdf.

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6

Nowicki, Thomas Edward. "The impact of plantations of Pinus spp. on the chemical properties of soils and stream waters in South African upland catchments." Doctoral thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/17332.

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Bibliography: pages 171-181.<br>Studies of forest ecosystems have indicated that internal sources constitute a significant component of the acid load to forest soils and can result in significant decreases in soil pH, acid neutralising capacity and base status. Despite this, the possibility that these processes can result in a significant transfer of acidity to drainage solutions and consequently to associated surface waters has, to a large extent, been discounted due to the self-limiting nature of " natural" acidification processes which purportedly do not involve significant concentrations o

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7

Smith, Carol M. S. "Assessment of critical loads of acidity for selected U.K. upland organic soils." Thesis, University of Aberdeen, 1993. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU555089.

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The use of critical loads of acidity to quantify damage to sensitive components of terrestrial and aquatic ecosystems has developed rapidly over the last decade. While much work has focused on defining damage to forested ecosystems, surface waters and groundwaters, there has been little work done on defining critical loads of acidity for ombrotrophic and minerotrophic peat. This thesis presents a modelling approach to quantify damage to ombrotrophic peat ecosystems, since such damage can result in a decline in both surface water quality and the ability of peat to act as an absorbent to aerial

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8

Mustafa, Akhmad Biological Earth &amp Environmental Sciences Faculty of Science UNSW. "Improving acid sulfate soils for brackish water aquaculture ponds in South Sulawesi, Indonesia." Awarded by:University of New South Wales. Biological, Earth & Environmental Sciences, 2007. http://handle.unsw.edu.au/1959.4/40619.

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Brackish water aquaculture is one of the largest coastal industries in Indonesia. This farming system involves the construction of ponds m coastal sediments. Many ponds in Indonesia have been abandoned due to past development of ponds in acid 8ulfate soils (ASS); these soils produce sulfuric acid through the oxidation of pyrite du ring and after the sediments have been excavated. The soils also contain elevated concentrations of metal such as iron and aluminium which are harmful to farmed fish and shrimp. Acidification of pond soil causes recurrent fish and shrimp mortalities, poor growth rate

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9

Islam, Mohammed Anowarul. "Responses of accessions of Austrodanthonia spp. to factors associated with soil acidity." University of Sydney. Food and Natural Resources, 2002. http://hdl.handle.net/2123/502.

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Pasture plants already adapted to acidic soil conditions are required as part of an integrated approach (with lime amelioration) to managing acid soils on the Tablelands of New South Wales, Australia. The objective of this thesis is to evaluate the usefulness of Austrodanthonia species for this purpose. The material evaluated in this study was collected during a previous survey of the distribution of Austrodanthonia on the Central, Southern and Monaro Tablelands of New South Wales. It was hypothesised that the genus Austrodanthonia has a wide range of tolerance to acid soils. A series of expe

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10

Al-Hazzouri, Abbas Ahmad 1949. "Effect of soil salinity and acidity on the germination of Quercus emoryi and Robinia neo-mexicana seeds." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/291761.

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The purpose of the study was to determine the effect of four salt concentrations and four acid levels of soil solution on the germination of Quercus emoryi and Robinia neo-mexicana seeds, and to study the effects of the cation concentration changes in solution (Na, Ca, Mg, K) and exchangeable cation concentration. The solution extracts and exchange phases of both soils, salt accumulation in the soil increased by increasing the salinity and acidity of the water applied. Exchangeable sodium was related directly to the SAR of the applied solutions. The soil responded differently to the salty wate

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11

Mbakwe, Ikenna. "An evaluation of the effectiveness of coal ash as an amendment for acid soils." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/1897.

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12

Harris, Mark Anglin. "Some organic amendments for heavy metal toxicity, acidity and soil structure in acid-sulphate mine tailings /." Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phh3148.pdf.

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13

Mendonca, Eduardo de sa. "The effect of the organic and mineral fractions on the acidity and charge of soils from the Cerrado Region, Brazil." Thesis, University of Reading, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316333.

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14

Toffolli, Leticia Cristina Bertusso. "Formas de aplicação e doses de calcário para alfafa implantada em área de plantio direto consolidado." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/757.

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A alfafa (Medicago sativa L.) é uma forrageira leguminosa com alto potencial produtivo, qualidade de forragem e variabilidade de utilização. Quando bem manejada, é uma cultura capaz de fornecer forragem de qualidade e promover um aumento na produtividade dos rebanhos. Para se expandir o uso desta forrageira no país, torna-se necessário superar alguns entraves, como a falta de cultivares adaptadas as diferentes condições edafoclimáticas e resistência ao pastejo. Este trabalho busca avaliar o efeito de diferentes doses de calcário combinadas a distintas formas de aplicação sobre o desenvolviment

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15

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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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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16

Soratto, Rogério Peres [UNESP]. "Aplicação de calcário e gesso em superfície na implantação do sistema de plantio direto." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/100003.

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Made available in DSpace on 2014-06-11T19:30:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-03-14Bitstream added on 2014-06-13T20:21:00Z : No. of bitstreams: 1 soratto_rp_dr_botfca.pdf: 792481 bytes, checksum: 32d9518363b0fae5fab589ed74ffbe8c (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Existe interesse na busca de alternativas para a implantação do sistema de plantio direto em áreas anteriormente cultivadas no sistema convencional de preparo do solo ou sob pastagens, sem a incorporação prévia do calcário, realizando-se a calagem superficialmente desde

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17

Radmann, Vairton. "Atributos químicos de solos cultivados com arroz na região sul do Estado do Amazonas." Universidade Federal de Pelotas, 2011. http://repositorio.ufpel.edu.br:8080/handle/prefix/3051.

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Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2016-09-23T16:24:14Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) dissertacao_Vairton.pdf: 1287042 bytes, checksum: 8a7c8e181d568edeb081a1ada6a0d1f3 (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2016-09-23T19:30:14Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) dissertacao_Vairton.pdf: 1287042 bytes, checksum: 8a7c8e181d568edeb081a1ada6a0d1f3 (MD5)<br>Made available in DSpace on 2016-09-23T19:30

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18

Santos, Carlos Lacy. "Materiais corretivos da acidez do solo no desenvolvimento inicial e nutrição da cultura da mamona." Universidade Federal do Espírito Santo, 2010. http://repositorio.ufes.br/handle/10/6632.

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Made available in DSpace on 2016-12-23T14:37:42Z (GMT). No. of bitstreams: 1 Carlos Lacy Santos.pdf: 610209 bytes, checksum: 3345388b917bb47a5a2901cd23eb9383 (MD5) Previous issue date: 2010-12-17<br>Este trabalho objetivou avaliar o uso de diferentes materiais corretivos de acidez do solo no desenvolvimento inicial e nutrição mineral da mamona em condição de casa de vegetação. O experimento foi montado num esquema fatorial 2x6, sendo dois Latossolos (LVA I e LVA II), e cinco materiais corretivos de acidez do solo (calcário, resíduo de mármore, escória de metalurgia, produto proveniente de al

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19

Saarinen, T. (Tuomas). "Temporal and spatial variation in the status of acid rivers and potential prevention methods of AS soil-related leaching in peatland forestry." Doctoral thesis, Oulun yliopisto, 2013. http://urn.fi/urn:isbn:9789526201108.

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Abstract This thesis examines temporal and spatial variations in the status of different rivers and streams of western Finland in terms of acidity and sources of acid load derived from the catchment area. It also examines the monitoring of acid runoff water derived from maintenance drainage in peatland forestry and suggests potential mitigation methods. A total of 17 river basins of different sizes in western Finland were selected for study, including rivers affected by both drainage of agricultural AS soils and forested peatlands. Old data from 1911–1931 were available, but most data were fro

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20

Tejero, Páramo Miguel. "Agronomical effects of mechanical box pruning in cv. Merlot at central area of Spain." Master's thesis, ISA, 2016. http://hdl.handle.net/10400.5/14807.

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Mestrado Vinifera Euromaster - Instituto Superior de Agronomia / Institut National D' Etudes Superieures Agronomiques de Montpellier<br>Introduction: Global warming, economic crisis and globalization are the three pillars which are altering the world in all the domains. In viticulture, a shortening of the grapevine phenology and an imbalance sugars/acidity derived from the new climatic conditions are forcing a reshuffle of the way of working in the field, in a more productive and sustainable with better quality. For that reason new pruning techniques have been developed in a way to adapt

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21

Soratto, Rogério Peres 1976. "Aplicação de calcário e gesso em superfície na implantação do sistema de plantio direto /." Botucatu : [s.n.], 2005. http://hdl.handle.net/11449/100003.

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Orientador: Carlos Alexandre Costa Crusciol<br>Banca: Ciro Antonio Rosolem<br>Banca: Godofredo Cesar Vitti<br>Banca: Domingos FornasieriFilho<br>Banca: Luis Reynaldo F. Alleoni<br>Resumo: Existe interesse na busca de alternativas para a implantação do sistema de plantio direto em áreas anteriormente cultivadas no sistema convencional de preparo do solo ou sob pastagens, sem a incorporação prévia do calcário, realizando-se a calagem superficialmente desde o estabelecimento do sistema, desde que não haja impedimento físico ao crescimento radicular. Nesse sentido, o gesso agrícola, por ser mais s

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22

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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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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23

Poulter, Rachel. "Investigating the role of soil constraints on the water balance of some annual and perennial systems in a Mediterranean environment." University of Western Australia. Faculty of Agriculture, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0018.

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This thesis compares the in situ water balance of common annual production systems (wheat, lupin, subclover and serradella) with a grazed perennial system (lucerne) at a site in the Avon Catchment, Western Australia. Using a physically-based water balance approach the value of a plant based solution in redressing the hydrological imbalance that has become a feature of much of the dryland agricultural region of Western Australia is investigated. The effectiveness of lucerne in providing greater available storage for buffering large rainfall events, as compared to the annual systems, is illustra

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24

Kidd, Petra Susan. "Aspects of soil acidity and their effect on plant growth." Thesis, University of Stirling, 1998. http://hdl.handle.net/1893/28841.

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The effects of low pH, AI, organic and phenolic acids on the growth of naturally occurring plant species were determined. The amelioration of Al toxicity by Si and organic acids was also investigated. Plants were grown from seeds in nutrient solutions simulating the ionic composition of soil solutions from five soil types ranging from acidic peat to calcareous soil. Soil solutions were extracted and analysed using centrifugation, with and without an immiscible displacent (1,1, I-trichloroethane), at both low (4000 rpm) and high speed (12000 rpm). Races of Holcus lanatus L. and Betula pendula R

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25

Godsey, Chad B. "Managing soil acidity in no-till production systems /." Search for this dissertation online, 2005. http://wwwlib.umi.com/cr/ksu/main.

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26

Solaiman, Abu Rayhan Mohammad. "Influence of soil acidity factors on Lotus rhizobia." Thesis, Queen's University Belfast, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356972.

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27

Bajita, Jocelyn. "The dynamics of manganese phytotoxicity implications for diagnosis and management of excess manganese in acid upland soils /." Thesis, University of Hawaii at Manoa, 2003. http://proquest.umi.com/pqdweb?index=0&did=765086301&SrchMode=1&sid=3&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1233969896&clientId=23440.

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28

SanClements, Michael. "The Chemistry of Acidic Soils in Humid, Temperate Forested Watersheds with Emphasis on Phosphorus, Aluminum and Iron." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/SanClementsM2009.pdf.

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29

Lehtovirta, Laura. "Ecology and physiology of Thaumarchaea in acidic soils." Thesis, University of Aberdeen, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.553840.

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Archaea represent one of the three domains of life and were once thought to be restricted to extreme environments. This view has been dramatically changed over the last two decades through the discovery of abundant novel lineages of non-extremophilic archaea, their implication in the global nitrogen cycle and their laboratory cultivation. The recently-described phylum Thaumarchaeota includes autotrophic ammonia oxidisers, thus performing the rate-limiting step of nitrification, and frequently outnumbering their bacterial counterparts particularly in acidic soils. Nitrification is a fundamental

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30

Costa, Claudio Hideo Martins da [UNESP]. "Efeito residual da aplicação superficial de calcário e gesso nas culturas de soja, aveia-preta e sorgo granífero." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/86428.

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Made available in DSpace on 2014-06-11T19:22:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-07-22Bitstream added on 2014-06-13T20:28:26Z : No. of bitstreams: 1 costa_chmc_me_botfca.pdf: 444896 bytes, checksum: 79a884c18686d0a77b3357b8cbc1bcfb (MD5) Bitstreams deleted on 2015-08-07T12:19:54Z: costa_chmc_me_botfca.pdf,. Added 1 bitstream(s) on 2015-08-07T12:20:56Z : No. of bitstreams: 1 000678831.pdf: 1444305 bytes, checksum: d3e614871d6cd55de66eda01f9f2bdd0 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>No sistema plantio direto praticamente não há revol

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31

Chessman, Dennis John. "The use of gypsum and a coal desulfurization by-product to ameliorate subsoil acidity for alfalfa growth." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/494.

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Acid soils limit the growth of aluminum-(Al) sensitive crops such as alfalfa (Medicago sativa L.). Management of acid subsoils can be difficult due to physical and economic constraints. Field experiments were conducted at two locations to evaluate the effectiveness of surface-applied gypsum and a flue gas desulfurization by-product for reducing the toxic effects of acid subsoils on alfalfa. The materials were applied at rates of 0, 5, 10, and 15 Mg ha-1. In addition, a glasshouse experiment was conducted that used 0, 5, and 10 Mg ha-1 of gypsum only. Field studies were concluded 41 and 45 m

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32

Betnér, Staffan. "Trends in Forest Soil Acidity : A GAM Based Approach with Application on Swedish Forest Soil Inventory Data." Thesis, Uppsala universitet, Statistiska institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-352392.

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The acidification of soils has been a continuous process since at least the beginning of the 20th century. Therefore, an inquiry of how and when the soil pH levels have changed is relevant to gain better understanding of this process. The aim of this thesis is to study the average national soil pH level over time in Sweden and the local spatial differences within Sweden over time. With data from the Swedish National Forest Inventory, soil pH surfaces are estimated for each surveyed year together with the national average soil pH using a generalized additive modeling approach with one model for

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33

Plassmeyer, C. J. Van Sambeek J. W. Eivazi Frieda. "Seasonal variation in nutrient availability and uptake by oak saplings following four nitrogen treatments on Missouri River floodplain." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/5712.

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The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on October 2, 2009). Thesis advisors: Dr. J. W. Van Sambeek, Dr. Frieda Eivazi. Includes bibliographical references.

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34

Sandberg, Scott Alan. "The biodegradation of valeric, butyric, propionic and acetic acids in anoxic, subsurface, soil environments." Thesis, Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/52069.

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The biodegradation potential of two subsurface soils was characterized by monitoring the biodegradation of short-chain fatty acids in anaerobic soil microcosms. Valerate, butyrate, propionate, and acetate concentrations were monitored independently using separate microcosms. The effect of sulfate on the microbial communities was also investigated. One soil, from Newport News, Virginia, consisted of a sandy loam collected beneath a low lying, grassy field. The microcosms containing the soil were characterized by: a neutral pH, the utilization of sulfate with concomitant precipitation of iron s

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35

Rechcigl, John E. "Alfalfa growth on acid soil as influenced by Al, Ca, pH and Mo." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/49835.

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Soil acidity is a major cause of low yields of alfalfa (Medicago sativa L.) in the southeastern United States. Two field experiments were conducted on an Ernest silt loam soil (fine—loamy, mixed, mesic Aquic Fragiudult) to determine what conditions are necessary for optimal alfalfa growth in an acid soil environment. In the first experiment alfalfa was no—till planted to evaluate the influence of surface applied dolomitic limestone at 0 and 6.7 Mg/ha either 8 or 20 months before planting and at planting on alfalfa performance under acidic conditions. Yield increases, greater than two fold, res

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Awkes, Meryl Mandy. "Comparison of calcium ameliorants and coal ash in alleviating the effects of subsoil acidity on maize root development near Middelburg, Mpumalanga." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4119.

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Thesis (MScAgric (Soil Science))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Acidic soils are a major limitation to agriculture worldwide. The Highveld in South Africa has many acidic soils and several coal burning power stations. These coal burning power stations generate alkaline fly ash as a waste material and it can thus serve as an ameliorant to the surrounding acidic soils. A two year field trial was undertaken to compare fly ash and other calcium ameliorants to alleviate the effects of subsoil acidity on maize root development. The field trail was established on Beeste

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37

Sanger, Luke. "Acidic deposition effects on upland organic soils and their drainage water." Thesis, University of Aberdeen, 1993. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU058910.

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The work presented in this thesis investigates the effects of precipitation chemistry on the chemical characteristics of upland organic soils in the UK and their associated drainage waters. It also describes effects on a number of microbially-mediated processes and concludes with a study on methods for the amelioration of peat acidification. Data presented in chapters 3, 5 and 6 have recently been published or accepted for publication (Sanger et al. 1993 a. 1993 b and 1993 c). The first chapter describes the nature of soil acidity and reviews the relevant literature on the effects of acidic de

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38

Costa, Claudio Hideo Martins da 1985. "Efeito residual da aplicação superficial de calcário e gesso nas culturas de soja, aveia-preta e sorgo granífero /." Botucatu : [s.n.], 2011. http://hdl.handle.net/11449/86428.

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Orientador: Carlos Alexandre Costa Crusciol<br>Banca: José Salvador Simoneti Foloni<br>Banca: Eduardo Fávero Caires<br>Resumo: No sistema plantio direto praticamente não há revolvimento do solo e o consequente acúmulo de fertilizantes na superfície acelera o processo de acidificação, contínuo e acentuado que ocorre naturalmente em solos de regiões úmidas, onde, geralmente, é observada baixa disponibilidade de nutrientes e elevados teores de alumínio. Assim, da mesma forma que no sistema de cultivo convencional, no sistema plantio direto também existe a necessidade de aplicação de insumos em su

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39

Landat, Emmanuel. "Etude hydrogéochimique de la nappe superficielle dans un remblai, sous un site industriel." Pau, 2001. http://www.theses.fr/2001PAUU3027.

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40

Jansen, Boris. "The mobility of aluminium, iron and organic matter in acidic sandy soils." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2003. http://dare.uva.nl/document/70962.

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41

Evans, S. W. "The rate of release of aluminium from acidic and acid sensitive soils." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308840.

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42

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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43

Shibata, Makoto. "Soil Ecosystem Processes in Tropical Forests, Savanna, and Croplands of Cameroon." Kyoto University, 2018. http://hdl.handle.net/2433/232365.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第21164号<br>農博第2290号<br>新制||農||1060(附属図書館)<br>学位論文||H30||N5138(農学部図書室)<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授舟川晋也, 教授縄田栄治, 教授北山兼弘<br>学位規則第4条第1項該当

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Sabaliauskas, Paulius. "Skirtingų kalkinių medžiagų poveikis dirvožemio potencialiajam rūgštingumui ir judriajam aliuminiui." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_144358-65532.

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Magistro darbe tiriamas skirtingų kalkinių medžiagų poveikis dirvožemio potencialiajam rūgštingumui ir judriajam aliuminiui. Darbo objektas – keturios kalkinės medžiagos: malta kreida, „Agrokalkės” (klinčių ir nedegtų kalkių miltelių mišinys), dolomitmičiai (dolomito atsijos), ir granuliuota kalkinė medžiaga „Kalktrąšė”. Darbo metodai – kalkinėmis medžiagomis buvo pakalkintos dvi, pasotinto balkšvažemio Dystric Albeluvisol ir nepasotinto balkšvažemio Eutric Albeluvisol, lauko bandymų aikštelės; dirvožemio potencialusis rūgštingumas nustatytas laboratorijoje elektroniniu pH-metru, judriojo ali

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Symons, Julia. "Soil fertility constraints to small-scale agriculture in North-west Zambia." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/2841.

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Thesis (MScAgric (Soil Science))--Stellenbosch University, 2008.<br>The soils of north-west Zambia are largely unexplored and are regarded by local residents as problematic in providing sufficient nutrients for the staple crop of maize in the area. The area is semi-tropical, with an average rainfall of 1300mm annum-1 falling predominantly in the summer. The undulating landscape is dominated by miombo woodland interspersed with savanna grassland. Little work has been done on these soils and further information is required to understand their origin and their fertility status. The main objective

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Fall, Thioro. "Soil Management for Improved Rice Production in Casamance, Senegal." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81457.

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Rice is a staple crop for many countries around the world, and is one of the top three food sources globally. Many environments where rice is grown contain stressors likely to limit its growth and yield. In southern Senegal (Casamance region), rice is mainly cultivated in lowlands near estuaries where drought, salinity, acidity, poor soil fertility, and iron toxicity are the main limiting factors. In Casamance, average rice yield for local farmers is 1 to 2 tons per hectare (809 to 1618 pounds per acre), compared to worldwide average yield of more than 4 tons per hectare. The soil where our 2-

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Driscoll, Kendra. "FATE OF LIMESTONE DISSOLUTION PRODUCTS IN ACIDIC METALCONTAMINATED SOIL MESOCOSMS." Thesis, Laurentian University of Sudbury, 2014. https://zone.biblio.laurentian.ca/dspace/handle/10219/2145.

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The impact of liming (10 t ha-1 of calcitic and dolomitic limestone, separately) on the soil solution and soil matrix was investigated in an acidic metal-contaminated soil from Sudbury, ON. A soil mesocosm experiment was performed; columns were leached with simulated rainwater and the soil solution collected at various locations throughout the soil column. The dissolution rate of calcitic limestone used for this experiment was found to be approximately double that of the dolomitic limestone investigated. Calcium and Mg released during limestone dissolution migrated through the soil profile to

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Cocker, Kay M. "Silicon amelioration of aluminium toxicity in wheat." Thesis, Oxford Brookes University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363719.

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Elliott, Homer. "Evaluating the Influences of Soil Calcium and Aluminum Availabilty on Ecosystem Processes in the Northern Hardwood Forest." ScholarWorks @ UVM, 2009. http://scholarworks.uvm.edu/graddis/75.

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Calcium (Ca) depletion and increased bioavailability of aluminum (Al) are potential consequences of soil acidification caused by acidic deposition and other anthropogenic factors. Tree declines are associated with base cation depletion and increased Al toxicity in forest soils in North America, Europe, and Asia. Changes in soil Ca and Al availability may lead to increased oxidative stress and disruptions in carbohydrate relationships in forest trees, as well as to substantial alterations in the capacity for enzymatically controlled processes of decomposition and mineralization in forest

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Salmon, Sandrine. "Impact de l'acidité du sol et des interactions biologiques sur la distribution des collemboles : Interaction particulière entre Heteromurus nitidus (collembole) et les lombricides." Paris, Muséum national d'histoire naturelle, 2001. http://www.theses.fr/2001MNHN0029.

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Divers travaux visent à déterminer les paramètres abiotiques qui contrôlent la présence des espèces animales du sol afin de pouvoir les utiliser comme bioindicateurs. Le facteur le plus étudié est le pH du sol, d'une part parce que l'on observe une tendance générale à l'acidification des sols forestiers, d'autre part parce qu'une modification de l'acidité du sol induit de profonds changements dans la composition spécifique des microarthropodes, en particulier des collemboles (Hexapodes). Cependant la relation entre les facteurs abiotiques et la distribution d'une espèce est affectée par des in

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