Дисертації з теми "Plant amendments"
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Sheta, Omar T. "Phytoremediation and rhizosphere manipulation using different amendments." Thesis, University of Glasgow, 2006. http://theses.gla.ac.uk/2147/.
Повний текст джерелаSummerville, Kevin M. "Effectiveness of Amendments and Microbial Treatments on Plant Growth in Urban Garden Soils." Youngstown State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1495712379969062.
Повний текст джерелаKitchens, Shane C. "AN INTEGRATED SUBTERRANEAN TERMITE MANAGEMENT SYSTEM COUPLING SOIL AMENDMENTS WITH INSECT REPELLENT PLANT TISSUES." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03262008-170913/.
Повний текст джерелаShort, Nicolyn. "Implications of green manure amendments on soil seed bank dynamics." University of Western Australia. School of Earth and Geographical Sciences, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0022.
Повний текст джерелаLucas, Shawn T. "MANAGING SOIL MICROBIAL COMMUNITIES WITH ORGANIC AMENDMENTS TO PROMOTE SOIL AGGREGATE FORMATION AND PLANT HEALTH." UKnowledge, 2013. http://uknowledge.uky.edu/pss_etds/24.
Повний текст джерелаAwada, Salam Mahmoud. "Amelioration Effects of Calcium Amendments on the Growth of Phaseolus vulgaris L. Under Sodium Stress." DigitalCommons@USU, 1991. https://digitalcommons.usu.edu/etd/3452.
Повний текст джерелаMoonilall, Nall Inshan. "Impact of Amendments on Soil Properties and Agronomic Productivity in Guyana." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1430925071.
Повний текст джерелаGebhardt, Martha Mary. "Soil Amendment Effects on Degraded Soils and Consequences for Plant Growth and Soil Microbial Communities." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/556614.
Повний текст джерелаWinslow, Jonathan W. "Evaluation of Host Resistance and the Utilization of Organic Amendments to Manage Macrophomina Crown Rot of Strawberry in California." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2075.
Повний текст джерелаNilsson, K. Sofia. "Modelling soil organic matter turnover /." Uppsala : Dept. of Ecology and Environmental Research, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/s326.pdf.
Повний текст джерелаWells, Daniel Evans Sibley Jeffrey Lynn. "Evaluation of spent tea grinds as an alternative horticultural substrate component." Auburn, Ala, 2008. http://hdl.handle.net/10415/1472.
Повний текст джерелаSmit, Rosanne. "Nematodes in British Columbia vineyards : indicators of soil food web responses to compost amendments and impacts of the plant-parasite, Mesocriconema xenoplax." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/13695.
Повний текст джерелаWalker, Bradley James. "The feasibility of incorporating various amendments into Copper Cliff slag to create a slag-based plant growth medium for the purpose of revegetation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ61305.pdf.
Повний текст джерелаAmisi, Karen Janila. "Strategies for managing weeds in a wheat, red clover, vegetable crop rotation transitioning to organic production." The Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=osu1104246323.
Повний текст джерелаLaudick, Julia Ann. "Microbial Biostimulants in Organic Farming Systems: Patterns of Current Use and an Investigation of Their Efficacy in Different Soil Environments." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483689529339271.
Повний текст джерелаLu, Wenliang Sibley Jeffrey Lynn. "Utilization of municipal solid waste compost in horticulture." Auburn, Ala., 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Horticulture/Dissertation/Lu_Wenliang_10.pdf.
Повний текст джерелаSoratto, 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.
Повний текст джерелаFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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 solúvel e apresentar relativa mobilidade no solo, é apontado como alternativa para correção das camadas subsuperficiais do solo em curto prazo, podendo ser utilizado como um produto complementar ao calcário. Dessa forma, o trabalho objetivou avaliar a influência da aplicação superficial de calcário e gesso, na implantação do sistema de plantio direto, sobre as características químicas do solo, o teor de cátions solúveis na parte aérea das culturas, o crescimento radicular, a nutrição e produtividade de culturas anuais, em região de inverno seco. O experimento foi conduzido nos anos agrícolas de 2002/2003 e 2003/2004, na Fazenda Experimental Lageado, localizada no município de Botucatu (SP), em um Latossolo Vermelho distroférrico, anteriormente conduzido no sistema convencional de preparo do solo. O delineamento experimental foi em blocos casualizados com parcelas subdivididas e quatro repetições. As parcelas foram constituídas por quatro doses de calcário dolomítico (0, 1.100, 2.700 e 4.300 kg ha-1), com PRNT = 71,2%, visando elevar a saturação por bases para 50%, 70% e 90%, respectivamente. As subparcelas foram constituídas pela ausência e aplicação de 2.100 kg ha-1 de gesso agrícola (6 x teor de argila em g kg-1, na camada de 0,20-0,40 m de profundidade). Para as culturas de verão foi utilizado o esquema de parcelas subsubdivididas, sendo as subsubparcelas constituídas por dois cultivares de arroz de terras altas...
There is great interest to search alternatives to establish the no-tillage system in fields previously cultivated on conventional tillage or on pasture, with no lime previous incorporation, using superficial liming since the beginning of system, if don't have physical impediment to root growth. Thus, the phosphogypsum, that is more soluble and with high mobility, has been an alternative to correct the subsuperficial soil layer, in a short time, and can be used as a lime complementary product. Therefore, the objective of this work was to evaluate the effects of lime and phosphogypsum surface application during the establishment of no-tillage system, on the soil chemical characteristics, on the content of water-soluble cations, in the crop shoot, on the root growth, on the nutrition and yield of annual crops, in a dry winter region. The experiment was carried out during the agricultural years of 2002/03 and 2003/2004, in an experimental area located in Botucatu County, São Paulo State, Brazil (48º 23' W and 22º 1' S) on a Haplorthox, before used with conventional tillage system. A randomized complete block design, in split-plot scheme, and four replications was used. The plots were composed by four dolomite limestone levels (0; 1,100; 2,700; and 4,300 kg ha-1), with Neutralization Power = 84.3% and Reactivity = 84.5%, aiming raise the base saturation to 50%, 70%, and 90%, respectively. The subplots were composed by without and with phosphogypsum application (2,100 kg ha-1 = 6 x clay content (g kg-1) in 0.20-0.40 m depth layer). For the summer crops a split-split-plot scheme were used. The subsubplots were constituted by two upland rice cultivars ('Caiapó' and 'IAC 202'), on agricultural year of 2002/03, and two common bean cultivars ('Carioca' and 'Pérola'), on agricultural year of 2003/2004. In the winter season of 2003 and 2004, the black oat was grown in the area... (Complete abstract click electronic access below)
Heckman, John Richard. "Restoration of Degraded Land: A comparison of Structural and Functional Measurements of Recovery." Diss., Connect to this title online, 1997. http://scholar.lib.vt.edu/theses/available/etd-1416152839711171/.
Повний текст джерелаZhou, Shuang. "EVALUATING SOIL PHYSICAL AND CHEMICAL PROPERTIES FOLLOWING ADDITION OF NON-COMPOSTED SPENT COFFEE AND TEA FOR ATHLETIC FIELDS." UKnowledge, 2017. https://uknowledge.uky.edu/pss_etds/96.
Повний текст джерелаTeklay, Tesfay. "Organic inputs from agroforestry trees on farms for improving soil quality and crop productivity in Ethiopia /." Umeå : Dept. of Forest Ecology, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/2005122.pdf.
Повний текст джерелаSoratto, 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.
Повний текст джерелаBanca: Ciro Antonio Rosolem
Banca: Godofredo Cesar Vitti
Banca: Domingos FornasieriFilho
Banca: Luis Reynaldo F. Alleoni
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 solúvel e apresentar relativa mobilidade no solo, é apontado como alternativa para correção das camadas subsuperficiais do solo em curto prazo, podendo ser utilizado como um produto complementar ao calcário. Dessa forma, o trabalho objetivou avaliar a influência da aplicação superficial de calcário e gesso, na implantação do sistema de plantio direto, sobre as características químicas do solo, o teor de cátions solúveis na parte aérea das culturas, o crescimento radicular, a nutrição e produtividade de culturas anuais, em região de inverno seco. O experimento foi conduzido nos anos agrícolas de 2002/2003 e 2003/2004, na Fazenda Experimental Lageado, localizada no município de Botucatu (SP), em um Latossolo Vermelho distroférrico, anteriormente conduzido no sistema convencional de preparo do solo. O delineamento experimental foi em blocos casualizados com parcelas subdivididas e quatro repetições. As parcelas foram constituídas por quatro doses de calcário dolomítico (0, 1.100, 2.700 e 4.300 kg ha-1), com PRNT = 71,2%, visando elevar a saturação por bases para 50%, 70% e 90%, respectivamente. As subparcelas foram constituídas pela ausência e aplicação de 2.100 kg ha-1 de gesso agrícola (6 x teor de argila em g kg-1, na camada de 0,20-0,40 m de profundidade). Para as culturas de verão foi utilizado o esquema de parcelas subsubdivididas, sendo as subsubparcelas constituídas por dois cultivares de arroz de terras altas... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: There is great interest to search alternatives to establish the no-tillage system in fields previously cultivated on conventional tillage or on pasture, with no lime previous incorporation, using superficial liming since the beginning of system, if don't have physical impediment to root growth. Thus, the phosphogypsum, that is more soluble and with high mobility, has been an alternative to correct the subsuperficial soil layer, in a short time, and can be used as a lime complementary product. Therefore, the objective of this work was to evaluate the effects of lime and phosphogypsum surface application during the establishment of no-tillage system, on the soil chemical characteristics, on the content of water-soluble cations, in the crop shoot, on the root growth, on the nutrition and yield of annual crops, in a dry winter region. The experiment was carried out during the agricultural years of 2002/03 and 2003/2004, in an experimental area located in Botucatu County, São Paulo State, Brazil (48º 23' W and 22º 1' S) on a Haplorthox, before used with conventional tillage system. A randomized complete block design, in split-plot scheme, and four replications was used. The plots were composed by four dolomite limestone levels (0; 1,100; 2,700; and 4,300 kg ha-1), with Neutralization Power = 84.3% and Reactivity = 84.5%, aiming raise the base saturation to 50%, 70%, and 90%, respectively. The subplots were composed by without and with phosphogypsum application (2,100 kg ha-1 = 6 x clay content (g kg-1) in 0.20-0.40 m depth layer). For the summer crops a split-split-plot scheme were used. The subsubplots were constituted by two upland rice cultivars ('Caiapó' and 'IAC 202'), on agricultural year of 2002/03, and two common bean cultivars ('Carioca' and 'Pérola'), on agricultural year of 2003/2004. In the winter season of 2003 and 2004, the black oat was grown in the area... (Complete abstract click electronic access below)
Doutor
Banaitis, Michael R. "Biogeochemical Response of a Northeastern Forest Ecosystem to Biosolids Amendments." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/BanaitisMR2007.pdf.
Повний текст джерелаMalosso, Elaine. "Effects of plant amendment on microbial community structure and fungal biomass in Antarctic soils." Thesis, University of Newcastle Upon Tyne, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289240.
Повний текст джерелаTomlinson, Ian Rory. "The amendment of acid soil with an ettringitic waste and its effects on plant growth." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/21334.
Повний текст джерелаAssociated with ESKOM's ash water beneficiation programme is the precipitation of an ettringitic waste from highly alkaline, saline water. The waste is dominated by ettringite (CauAJ4(OH)24(S04) 6.52H20) with calcite (CaC03) as a minor phase (17.7% for the sample used in this study). Apart from the presence of calcite, the ettringite itself is alkaline due to the presence of OH ions. Following a submission that the waste had potential as an ameliorant of acid soil, research into this possibility was initiated. Following the determination of a calcium carbonate equivalent (HCl-CCE) value of 78% using the HCl back titration method of Horwitz (1980), an incubation experiment was initiated using three acid soils of contrasting characteristics: a so-called Silvermine sand, Kranskop A and Kranskop B soils. The effects on soil acidity of ettringitic waste were compared with analytical grade calcite. Soils (50g samples) were incubated with the two alkaline amendments for two weeks, following which pH(KCl), pH(H20) and KCl-extractable acidity were determined. Ettringitic waste led to apparently lower levels of acidity neutralization for corresponding treatments set on an HCl-CCE basis. This difference was minimized with the highly buffered, sesquioxide and organic-rich Kranskop A soil which could be attributed to the greater reactivity of the ettringitic waste with organically-complexed acidity together with the "self-liming" effect of so4 in sesquioxide-rich soils (sensu Reeve & Sumner, 1972). The waste showed progressively less neutralization with Kranskop B and Silvermine soils apparently in response to a decline in buffering capacity of these soils.
Lange, Ian. "Investigating the effects of the 1990 Clean Air Act Amendments on inputs to coal-fired power plants /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/7421.
Повний текст джерелаHurtado, Cervera Carlos. "Fate and effects of waterborne contaminants of emerging concern in the soil-plant system : impact of biochar soil amendment to mitigate their plant uptake." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/458444.
Повний текст джерелаL'escassetat d'aigua és un tema de gran preocupació degut a l'augment de la població i el canvi climàtic, que tan que s’elevi la demanda d'aigua. Molts països amb un clima àrid o semiàrid s'enfronten a un elevat estrès hídric. En aquest context, l'ús d'aigua regenerada es converteix en una practica clau. L'economia de molts passos es basa en el sector agroalimentari, que requereix grans quantitats d'aigua pel seu desenvolupament. Per aquesta raó, l'aigua regenerada representa un component important en la gestió intel·ligent de l'aigua. Les estacions depuradores d'aigües residuals (EDAR) estan dissenyades per eliminar de manera eficient alguns compostos biodegradables. Tot i així, no són capaces d'eliminar una sèrie de contaminants orgànics. Hi ha molts tipus de contaminació en l'aigua i els contaminants emergent (CECs) inclouen molts compostos que no estan legislats i recentment s'han observat alguns efectes en el medi ambient. Alguns exemples de CECs són fàrmacs, productes de cura personal, retardants de flama, microplàstics, etc. En conseqüència, les plantes estan exposades a un gran nombre de contaminants que es troben presents no només en aigua, sinó també en l’aire o el sol. Per aquest motiu, és important entendre la dinàmica implicada en l'absorció d’aquests contaminants en plantes i cercar estratègies per mitigar aquesta possible absorció. Aquest treball de recerca té com a objectiu estudiar l'absorció de diversos CECs en enciams, que han estat seleccionats perla seva presencia en el medi ambient i les seves propietats fisicoquímiques. Per dilucidar els paràmetres que estan implicats en l’absorció d'aquests contaminants en enciams, tres experiments diferents s’han dut a terme en l’estació experimental Agròpolis pertanyent a la UPC. Per tant, aquesta Tesi es pot separar en els 3 experiments duts a terme. En el primer experiment, es va avaluar l'absorció d'alguns CECs en enciams emprant un substrat format per una mescla de sorra i perlita. L’experiment va dilucidar que la majoria deis CECs van ser absorbits pels enciams i translocats a les parts aèries deis enciams. D'altra banda, un balanç;: de masses es va realitzar per avaluar la persistència deis CECs en el substrat. Després, mitjançant models d’incorporació de contaminants en plantes, es van estimar les vides mitjanes deis CEC en el sistema sol-planta. En un següent experiment, l’ús de biocarbó (biochar) es va proposar com una esmena del sol per reduir l'absorció d'aquests CECs als enciams. Per dur confirmar aquesta hipòtesi, es van afegir diferents percentatges de biochar (O, 2,5 i 5% de biochar) en un sol agrícola de la zona agrícola del Delta del Llobregat. Finalment, es va poder observar que l’addició de biochar reduí la concentració deis CECs en els enciams. Aquests dos primers experiments van ser útils per evidenciar que aquests compostos es poden absorbir fàcilment perles plantes i arribar a les parts que comestibles. No obstant, en altres estudis s’ha demostrat que les plantes són capaços de metabolitzar xenobiòtics a través de tres passos: transformació, conjugació i segrest deis CECs. Per aquest motiu, es va realitzar una digestió enzimàtica per determinar la fracció de CECs que podrien ser conjugats. Curiosament i segons el contaminant, la fracció conjugada va representar més del 80% del compost parental, evidenciant que la fracció conjugada s'ha de tenir en compte en els estudis d'avaluació de risc humà. Finalment, en aquest mateix experiment, es varen observar diferencies morfològiques entre els enciams exposats a un còctel de CECs i els no exposats als contaminants. A més, la determinació de clorofil·les també va evidenciar diferencies entre tractaments. Per aquesta raó, es van extreure els metabòlits secundaris deis enciams emprant un enfocament metabolòmic juntament amb tècniques quimiomètriques per correlacionar la presencia d’aquests contaminants amb els canvis morfològics i en el contingut de clorofil·la i dels metabòlits secundaris
Harper, John, Jack Watson, and Tom Doerge. "The Effect of Various Soil Amendments on the Yield of Alfalfa and Soil Infiltration Rates." College of Agriculture, University of Arizona (Tucson, AZ), 1986. http://hdl.handle.net/10150/200479.
Повний текст джерелаHenderson, Jennifer Jacobs. "Hayden Covington, the Jehovah's Witnesses and their plan to expand First Amendment freedoms /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/6183.
Повний текст джерелаSchuch, Ursula K., Jack Kelly, and Frank Stryker. "Effect of Planting Hole Size and Amendments on Growth and Establishment of Acacia farnesiana." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/216554.
Повний текст джерелаCarmichael, Travis Rex. "Landscape establishment and irrigation management of ornamental plants grown in eastern redcedar substrate." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/15661.
Повний текст джерелаDepartment of Horticulture, Forestry, and Recreation Resources
Cheryl R. Boyer
Pine bark (PB) has been the principal component of nursery crop substrates in the United States for more than 60 years. Substrate material used for the purpose of growing ornamental plants in the Great Plains is generally shipped a great distance, primarily from the Southeastern U.S., due to a lack of pine plantations in this region. Eastern redcedar (Juniperus virginiana L.; ERC), an aggressively weedy tree species, has been identified as a possible alternative to PB for nursery substrates. The objective of this thesis was to evaluate the establishment of Miscanthus sinensis N.J. ‘Little Kitten’ (dwarf maiden grass), Rosa (L.) ‘Radtkopink’ (Knockout® rose), Ilex glabra (L.) A. Gray ‘Compacta’ (holly), Ulmus parvifolia Jacq. ‘Emer II’ (Allee® lacebark elm), Sedum telphium L. ‘Autumn Joy’ (sedum), Hosta Tratt. ‘Sum and Substance’ (hosta), and Hemerocallis L. ‘Charles Johnston’ (daylily) in three substrate mixes. These substrate mixes consisted of 80% PB: 20% sand, 80% ERC: 20% sand, and 40% PB: 40% ERC: 20% sand. At the end of the production phase differences in growth were observed in maiden grass, holly, lacebark elm, and sedum. At the end of the landscape establishment phase, no differences in growth were observed in any species except holly and hosta. To attempt to overcome the sub-optimal physical properties of ERC (high air space and low container capacity), cyclic irrigation was used to evaluate growth of Sedum spectabile Boreau ‘Autumn Fire’ (sedum), Rudbeckia fulgida Aiton ‘Goldstrum’ (black-eyed susan), and Hibiscus moscheutos L. ‘Luna White’ (hibiscus) in the same 3 substrates. The objective of this study was to evaluate the affect of irrigation frequency (1x, 2x, 3x, or 6x per day) and substrate ERC content on plant growth. Sedum had the greatest growth index (GI) shoot dry weight in PB and when irrigated 1x and 2x per day had the greatest root dry weight regardless of substrate. Irrigation frequency had no significant difference for GI and shoot dry weight Black-eyed susan had the greatest GI and shoot dry weight when grown in PB. Irrigation frequency only had an impact on shoot dry weight of black-eyed susan; plants irrigated 1x, 2x, and 3x per day had the greatest growth. Hibiscus had greatest growth in PB: ERC mix. Irrigation frequency had no impact on growth of hibiscus. Cyclic irrigation does not overcome low water holding capacities in these three species. Overall, ERC can be used as a partial replacement to PB (up to 50%). However, further research evaluating effects of different fertility regimes on ERC substrate is warranted.
Kim, Tae-Kyung. "Dynamic analysis of sulfur dioxide monthly emissions in U.S. power plants." Columbus, Ohio : Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1086195964.
Повний текст джерелаTitle from first page of PDF file. Document formatted into pages; contains xviii, 218 p.; also includes graphics. Includes abstract and vita. Advisor: Jean Michael Guldmann, City and Regional Planning Graduate Program. Includes bibliographical references (p. 130-133).
Khosa, Mbokota Candy. "An investigation into the potential of crude and partially separated material of selected non-crop plant species as control agents of root-knot nematodes (Meloidogyne incognita) in tomato / Mbokota Candy Khosa." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8705.
Повний текст джерелаThesis (PhD (Environmental Sciences))--North-West University, Potchefstroom Campus, 2013
Stroehlein, Jack, Tom Doerge, and Lee Clark. "The Effect of Various Soil Amendments on the Yield of Barley When Grown on a Sodium-affected Soil." College of Agriculture, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/200512.
Повний текст джерелаHarper, John, Jack Watson, and Tom Doerge. "The Effect of Gypsum and Sulfuric Acid Soil Amendments on the Yield of Alfalfa and Soil Infiltration Rates: A Progress Report." College of Agriculture, University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/203795.
Повний текст джерелаEl, Mghadmi Z. Y. "Effect of environmental stresses and growing medium amendment with 'Zander' on growth of Acacia saligna under saline conditions." Thesis, Coventry University, 2011. http://curve.coventry.ac.uk/open/items/5727ee90-f827-485e-93d9-94a9b5456f43/1.
Повний текст джерелаBryan, Donita Lynn. "Influence of planting depth on landscape establishment of container-grown trees." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3179.
Повний текст джерелаGudichuttu, Vindhya. "Phytostabilization of multi-metal contaminated mine waste materials: long-term monitoring of influence of soil amendments on soil properties, plants, and biota and the avoidance response of earthworms." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/16989.
Повний текст джерелаDepartment of Agronomy
Ganga M. Hettiarachchi
Mine waste materials from the Tri-State mining region in Kansas, Missouri, and Oklahoma pose environmental hazards. The area is contaminated with trace elements, such as Pb, Zn and Cd, which are transported to surrounding areas through water, wind erosion, and runoff. Phytostabilization or establishing healthy vegetative cover could be used to reduce or control these contaminated materials from further spreading with wind and water. However, further research is needed to monitor the long-term sustainability and assess if high applications of compost amendments could help to facilitate soil reclamation. The overall focus of this thesis was to monitor long-term effects of compost or lime additions at two different rates, with or without other soil amendments, on soil properties, plants, and soil biota. We used the earthworm avoidance test as a screening tool for testing effects of soil amendments on ecotoxicity. In the first field study, pelletized manure compost additions of 448 Mg ha⁻¹ significantly decreased the bioavailable Pb, Zn, and Cd while increasing plant nutrients, vegetative cover, and plant biomass as compared to the contaminated control and the low addition of compost (224 Mg ha⁻¹) over 2.5 years. Plant tissue metal concentrations with compost addition did not show any phytotoxicity in this study. Lime additions did not show any significant effect on any of the measurements. Results from the first study suggest that one time addition of large quantities of compost at 224 to 448 Mg ha⁻¹ can support establishing and maintaining healthy vegetative cover at least for a 2.5 year period. In the second field study, long-term monitoring of the effectiveness of the amendments was studied. Compost was applied at two different rates (45 or 269 Mg ha⁻¹) in 2006. Various chemical properties, microbial activities, and vegetative growth or plant biomass were measured approximately for 4.5 years to evaluate long-term changes in soil quality and sustainability of phytostabilization efforts, when combined or assisted with soil amendments to improve the quality of trace element-contaminated mine waste materials. Plants grown with compost additions of 269 Mg ha⁻¹ showed higher nutrients, biomass, and enzyme activities as compared to plants grown on the contaminated control and with the low addition of compost (45 Mg ha⁻¹) over 4.5 years. Decrease in plant biomass and enzyme activities seen in the high compost treatments by the end of the study period suggested that long-term sustainability of these efforts may require repeated addition of soil amendments every 4 to 5 years. Additionally, a laboratory study was conducted to assess the long-term effects of treatments used in the second field study on ecotoxicity using the avoidance behavior responses of the earthworm Eisenia fetida. There was no mortality of earthworms after a 48 h exposure period of any of these treated and untreated mine waste materials. Avoidance was clear for the contaminated control and the low compost treatment (45 Mg ha⁻¹). Moreover, the contaminated control did show habitat limitation (< 20% of earthworms was found in test soil). Current research studies provide evidence that, high rates of compost applications can be used to stabilize and reduce the bioavailability of trace elements in mine waste materials.
Cline, Terry Lee. "An Evaluation of the School Choice Plan in Charlotte-Mecklenburg Schools and its Perceived Effects on Academic Achievement for all Students." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/29106.
Повний текст джерелаEd. D.
Pires, Tatiana da Costa Raposo. "Alterações pós-colheita em raízes de mandioquinha-salsa (Arracacia xanthorrhiza Bancroft.): atividade enzimática, identificação de contaminante e caracterização parcial do amido." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-29082017-122147/.
Повний текст джерелаThe aim of this work was to verify the changes in amylolytic, pectinolytic and cellulasic activity in Peruvian carrot roots after harvest, under different storage conditions, in order to evaluate the deteriorative mechanisms of the roots, as well as to identify the microorganism possible responsible to its low conservation time. In addition, physico-chemical and rheological characteristics of Peruvian carrot starch were studied. For pectinesterase (PE) and poligalacturonase (PG) detection on the roots, the extraction parameters of both enzymes were optimized by response surface methodology. The enzymes presented the optimum pH values at 7.5 and 4.0 for PE and PG, respectively. Extraction time and NaCI concentration were considered non-significant by the model. Pectic enzymes seams to be related to the deterioration process of Peruvian carrot, that is associated to the root softening. Considering the high volume of gas under specific packing and temperature, the presence of microorganisms soft rot promoters could be the main cause of the high perecibility of the roots. The amylolytic enzymes present an important role on Peruvian carrot deterioration related to the starch hydrolysis and the releasing of reducing sugars, substrate for opportunistic microorganisms. The cellulasic activity was not significant during storage time. Best conditions for roots conservation occurred at 4°C and under vacuum package. The bacteria isolated from the roots were identified by biochemical reactions as Erwinia carotovora subsp. odorifera. Peruvian carrot starch presented low values of amylose content (12.1 %) in comparison to other starch sources and a good stability during cooking, analyzed by viscoamylogram Brabender. The turbidity of starch suspensions presented good stability during storage, as well as water holding capacity, which presented 2.53% in optimal conditions of gel preparation. Syneresis is positively influenced by the pH of past solution and starch concentration whereas temperature of gel formation was not significant. Texture of starch preparations was significant influenced by temperature of gel formation as well as starch concentration. The knowledge of some rheological and physico-chemical properties of Peruvian carrot starch can be useful focusing its use as a food ingredient, which can be an alternative to the consumption of the roots in nature, especially considering crop excesses and low commercial value roots.
Rodríguez, Nathalie Pérez. "Fractionation of Cu and Fe isotopes in metal-rich mine sites : biotic and abiotic processes." Licentiate thesis, Luleå tekniska universitet, Geovetenskap och miljöteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26219.
Повний текст джерелаGodkänd; 2012; 20120816 (natper); LICENTIATSEMINARIUM Ämnesområde: Tillämpad geologi/Applied Geology Uppsats: Fractionation of Cu and Fe Isotopes in Metal-Rich Mine sites: Biotic and Abiotic Processes Examinator: Professor Björn Öhlander, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Diskutant: Dr., Project Manager Magnus Land, Kungliga Vetenskapsakademien Tid: Tisdag den 25 september 2012 kl 10.00 Plats: F341, Luleå tekniska universitet
Bakota, Filip. "Plán pro zvládání sucha a nedostatku vody." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392180.
Повний текст джерелаVallad, Gary Edward. "Potentiation of plant defenses with organic soil amendments /." 2003. http://www.library.wisc.edu/databases/connect/dissertations.html.
Повний текст джерелаWang, Jianguo. "Response of Artemisia tridentata ssp. wyomingensis and Stipa thurberiana to nitrogen amendments /." 1988. http://hdl.handle.net/1957/9832.
Повний текст джерелаTurner, Jason Clemn. "Electrical conductivity and sodium adsorption ratio changes following annual applications of animal manure amendments." 2005. http://digital.library.okstate.edu/etd/umi-okstate-1227.pdf.
Повний текст джерелаMichael, Patrick Skoth. "Effects of organic amendments and plants on the chemistry of acid sulfate soils under aerobic and anaerobic conditions." Thesis, 2015. http://hdl.handle.net/2440/98723.
Повний текст джерелаThesis (Ph.D.) (Research by Publication) -- University of Adelaide, School of Biological Sciences, 2015.
Blue, Jarrod Dwayne. "Soil nitrogen amendments and insect herbivory alter above-and belowground plant biomass in an old-field ecosystem." 2010. http://trace.tennessee.edu/utk_gradthes/688.
Повний текст джерелаCox, Bonnie S. Hoffman. "Serial manure amendments : effects on soil properties and root rot of sweet corn." Thesis, 2005. http://hdl.handle.net/1957/27796.
Повний текст джерелаGraduation date: 2006
Sutton-Grier, Ariana E. "The Role of Plant Functional Diversity and Soil Amendments in Regulating Plant Biomass and Soil Biogeochemistry in Restored Wetland Ecosystems in the North Carolina Piedmont." Diss., 2008. http://hdl.handle.net/10161/620.
Повний текст джерелаGraff, Joseph Edward. "Ionic balance and the constituent organic acids of current-year foliage of western redcedar, western hemlock, and Douglas-fir seedlings /." 1993. http://hdl.handle.net/1957/10705.
Повний текст джерелаCespedes, Leon Maria Cecilia. "Organic soil amendements (sic) : impacts on snap bean common root rot and soil quality." Thesis, 2002. http://hdl.handle.net/1957/32042.
Повний текст джерелаGraduation date: 2003