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Дисертації з теми "Soils and nutrition"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 3 березня 2023

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1

Coyle, Kieran. "An investigation of the role of soil micro-organisms in phosphorus mobilisation : a report submitted to fulfil the requrements of the degree of Doctor of Philosophy." Title page, table of contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phc8814.pdf.

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2

Kim, Hak Jin. "Ion-selective electrodes for simultaneous real-time analysis for soil macronutrients." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4471.

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Thesis (Ph.D.)--University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (April 26, 2007) Vita. Includes bibliographical references.

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3

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

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

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4

Cruz, David Ricardo Jimenez. "Influence of soils, nutrition, and water relations upon charcoal rot disease processes in Kansas." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/10747.

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Master of Science<br>Department of Plant Pathology<br>Christopher R. Little<br>Christopher R. Little<br>Charcoal rot, caused by Macrophomina phaseolina, is the most important soybean disease in Kansas. Several strategies have been recommended to control this disease including crop rotation, lower plant densities, biological control, plant resistance and tolerance, and fungicide application. However, those techniques have not been completely effective and the information concerning soil texture, irrigation and micronutrient fertility (particularly manganese) upon charcoal rot disease severity a

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5

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.

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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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6

Molteno, Steve. "The characterization of Rooibos tea soils and their effects on nitrogen nutrition of the plant." Bachelor's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/26686.

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7

Uribe, Botero Eduardo. "Response of corn to manganese application on Atlantic coastal plain soils." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/45679.

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Although corn plants are tolerant of low levels of available soil Mn, Mn deficiencies in corn were suspected on soils where Mn applications had previously increased soybean seed yields. Five experiments were conducted in farmer's fields to evaluate the response of corn to Mn applications. Three band Mn and two broadcast Mn studies were conducted in five field experiments on Atlantic Coastal Plain soils. The mean increase in corn grain yield in the band studies on three soils was l 960 kg ha<sup>-1</sup>. Corn grain yields were not increased in the broadcast Mn studies on Slagle and Dragston fi

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8

Kitchen, Julie Louise. "Nutrition and nutrional value of wheat grown in organic and conventional farming systems in South Australia." Title page, table of contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phk618.pdf.

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9

Kroehler, Carolyn J. "The role of acid phosphatases in the phosphorus nutrition of arctic tundra plants." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/80295.

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The acid phosphomonoesterase activity associated with two major rooting strategies in arctic tundra plants was examined: that of Eriophorum vagina tum, a dominant plant in tussock tundra ecosystems, with its predominantly non-mycorrhizal root system; and that of ectomycorrhizal roots. Eriophorum has phosphatase activity which is evenly distributed along its root surface, has a pH optimum at soil pH (3.5-4.0), and continues at substantial rates at 1 °C. Inorganic phosphorus inhibits activity only 7 to 19%. In addition, Eriophorum has phosphatase activity associated with all the "below-ground"

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10

Nuñez, Moreno Jesus Humberto. "Nutritional Studies on Pecans [Carya illinoinensis L. (Wangenh.) C. Koch] Growing in Irrigated Alkaline Soils." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/194206.

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Annual application of N at rates of 118 (118N), 236 (236N), and 354 (354N) kg•ha⁻¹ on 35 year old 'Western Schley' pecan trees during four years had little effect on mineral composition and foliar N. No differences in yield, nut quality, and reproductive characteristics were found. Alternate bearing intensity in four consecutive years was 37, 33 and 28% in 118N, 236N, and 354N, respectively, with a significant linear response. Rates from 118 to 236 kg N•ha⁻¹ satisfy N needs for pecan in irrigated pecan orchard of the southwest of United States. The effect of one-time banding of zinc sulfate (

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11

Richard, Paul François. "A computer analysis of the flow of water and nutrients in agricultural soils as affected by subsurface drainage." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/29171.

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A computer model was developed in order to determine the effects of drainage practices on nutrient losses from level agricultural soils. The model performs a daily simulation of the vertical flow of water, nitrogen, phosphorus, and heat, and of the growth of crops. A water flow submodel calculates the depth of the water table based on daily predictions of evaporation, transpiration, flow to drains and ditches, and deep percolation. An original saturated-unsaturated flow algorithm is used to determine moisture infiltration, redistribution, and upward flow in the soil matrix, as well as bypassi

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12

Sikström, Ulf. "Growth and nutrition of coniferous forests on acidic mineral soils : status and effects of liming and fertilization /." Alnarp : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-6066-2.pdf.

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13

Knecht, Billberger Magnus F. "Plant growth - stoichiometry and competition : theory development in ecosystem ecology /." Uppsala : Dept. of Ecology and Environmental Research, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200624.pdf.

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14

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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15

Wakeel, Abdul. "Substitution of potassium by sodium in sugar beet (Beta vulgaris L.) nutrition with special reference to K-fixing soils." Giessen VVB Laufersweiler, 2008. http://d-nb.info/994756046/04.

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16

Venter, Annari. "Comparing plant yield and composition with soil properties using classical and geostatistical techniques." Diss., University of Pretoria, 2003. http://hdl.handle.net/2263/23916.

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Plant nutrient management plays a vital role in the success or failure of modern Lucerne production. In South Africa, Lucerne is produced under a wide range of climatic conditions, under dryland and irrigation and in some areas throughout the year. This means that there is a continuous demand for nutrients under a wide range of environmental conditions. The most important factors affecting the nutrient requirement of Lucerne is yield, the cutting schedule, climate and management practices. To enable site-specific crop requirements, the spatial variation of soil and plant properties within a fi

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17

Brown, Lynette. "A comparative study of the nitrogen nutrition of Proteaceae growing in limestone- and sandstone- derived soils of the Agulhas coast." Thesis, University of Cape Town, 1986. http://hdl.handle.net/11427/26099.

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18

Walsh, Brice D. (Brice David). "Mulch management systems in organic dwarf apple orchards and their effects on soil physical properties, soil nutrient availability, and tree nutrition." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55402.

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An alternative to herbicides in dwarf apple orchards (Malus pumila Mill.) is the use of mulches. Research objectives were to compare several mulch systems (Festuca rubra L., Lupinus albus L. plus Daucus carota L.; straw, manure compost, geotextile) with soil cultivation as to soil physical properties and plant nutrient levels in soils, leaves and fruit. Studies carried out in 1992 and 1993 on three dwarf apple orchards on the Macdonald Campus of McGill University showed that straw mulch increased soil water contents and exchangeable K, but reduced exchangeable Mg compared to Festuca mulch. Str

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19

Moloinyane, Siphokazi. "Bioefficacy of selected entomopathogenic fungal endophytes (Ascomycota) against grapevine mealybug (Planococcus ficus)." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2858.

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Thesis (MTech (Horticulture))--Cape Peninsula University of Technology, 2018.<br>Global demand for environmentally-friendly grapevine cultivation and pest control has necessitated an improved understanding of the relationship between soil properties and beneficial naturally occurring antagonists like entomopathogenic fungi (EPF). This group of fungi presents a viable alternative for the control of destructive pests such as the grapevine mealybug. Sixty-six soil samples were collected from 22 vineyards in the Western Cape, South Africa. The association between soil nutrient status and EPF preva

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20

Wakeel, Abdul [Verfasser]. "Substitution of potassium by sodium in sugar beet (Beta vulgaris L.) : nutrition with special reference to K-fixing soils / submitted by Abdul Wakeel." Giessen : VVB Laufersweiler, 2009. http://d-nb.info/993337465/34.

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21

Badresingh, Vera. "Evaluation of low phytate barleys and in vitro procedure for predicting phosphorus availability in organic and inorganic sources of phosphorus /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3025597.

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22

Gianfrancesco, Richard Umberto. "Phosphorus nutrition of mycorrhizal and non-mycorrhizal plants of upland soils with special reference to the utilization of the phosphodiester DNA under sterile conditions." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299580.

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23

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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24

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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25

Sousa, Adervan Fernandes. "Mineralization of nutrients and plant growth in soils irrigated with wastewater from oil extraction." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=16918.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>O grande volume de Ãgua utilizado na agricultura compromete a sua disponibilidade para o consumo humano. Diante desse problema, Ã necessÃrio avaliar a utilizaÃÃo de Ãguas residuais na produÃÃo agrÃcola, como uma opÃÃo para a conservaÃÃo dos recursos hÃdricos. Ãguas residuais oriundas de campos de petrÃleo podem ser uma boa opÃÃo para irrigaÃÃo, especialmente em regiÃes de pouca e alta variabilidade de chuvas como o Nordeste brasileiro. No entanto, Ã necessÃrio avaliar os seus efeitos no solo, como acÃmulo de nutrientes e decompos

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26

Payn, Timothy William. "The effects of magnesium fertiliser and grass on the nutrition and growth of P. radiata planted on pumice soils in the central North Island of New Zealand." Thesis, University of Canterbury. Forestry, 1991. http://hdl.handle.net/10092/7144.

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This thesis addressed the problem of the widespread occurrence of magnesium deficiency in Pinus. radiata planted on pumice soils in the central North Island of New Zealand, the increased severity of the deficiency where trees were planted on grassed sites, and the slow increase in foliar Mg concentrations and tree growth following fertilisation of deficient trees with various sources and rates of Mg fertiliser. Plant available Mg concentrations were found to be very low in pumice soils, with soil solution concentrations often below 1 mgL-¹, and exchangeable concentrations in the upper 20 cm o

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27

Ben, Harrath Beya. "Contribution à l'étude du désherbage et de la nutrition minérale foliaire du maïs fourrager (Zea mays L.) dans les sols calcaires tunisiens." Doctoral thesis, Universite Libre de Bruxelles, 2007. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210616.

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L’objectif de ce travail est d’améliorer la productivité du maïs fourrager (Zea mays L.) dans les sols calcaires tunisiens. En effet dans ces conditions édaphiques la plante se heurte à des problèmes d’ordre nutritionnel limitant l’absorption des 3 éléments essentiels.<p>C’est pourquoi nous voulons mettre au point une nouvelle technologie capable de contourner ces contraintes. En effet la fertilisation par voie foliaire associé à un désherbage de pré émergence serait l’approche la plus logique, capable d’apporter les éléments en fonction des besoins de la plante et de constituer par conséquent

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28

Guimarães, Claudiney do Couto. "BIOMASSA E NUTRIENTES EM PLANTIOS DE EUCALIPTOS NO BIOMA PAMPA." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/8729.

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The silviculture with exotic species is present in most Brazilian s Biomes. In the Pampa Biome RS, although historical records indicate the presence of eucalyptus since 1835, commercial plantations in the southwest of the state for industrial purposes have received the largest investments since 2000. For being an eucalyptus rapid growth and consequently high biomass production and nutrient accumulation, debates are always being provoked to discuss the impacts and sustainability of culture. Given the importance of this scene this study aimed to characterize nutritionally stands of Eucalytpus gr

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29

Boucher, Patricia. "Base cation immobilization in the stem of some hardwoods of southern Québec." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ55039.pdf.

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30

Teklay, 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.

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31

Dupuy, Joan. "Interactions entre les hydrocarbures aromatiques polycycliques et les plantes supérieures : prélèvement et réponses toxiques." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0299/document.

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En France et en Europe, la fin des activités industrielles liées à l’exploitation du charbon a laissé de nombreux sites et sols pollués par les hydrocarbures aromatiques polycycliques (HAP). La rhizodégradation pourrait permettre leur dépollution par l’utilisation de plantes et de leur microflore associée. Toutefois, l’efficacité de cette technique, démontrée en conditions contrôlées de laboratoire, est limitée in situ par de fortes mortalités ou l’inhibition de croissance de la plante. De plus, le transfert de ces polluants dans la plante peut menacer la chaîne alimentaire. Ce travail se prop

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32

Lotfollahi, Mohammad. "The effect of subsoil mineral nitrogen on grain protein concentration of wheat." Title page, table of contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phl882.pdf.

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Copy of author's previously published work inserted. Bibliography: leaves 147-189. This project examines the uptake of mineral N from the subsoil after anthesis and its effect on grain protein concentration (GPC) of wheat. The overall objective is to examine the importance of subsoil mineral N and to investigate the ability of wheat to take up N from the subsoil late in the season under different conditions of N supply and soil water availability. Greenhouse experiments investigate the importance of subsoil mineral N availability on GPC of wheat and the factors that contribute to the effective

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33

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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34

Guimarães, Claudiney do Couto. "Ecoeficiência e sustentabilidade nutricional em povoamentos de eucaliptos no Bioma Pampa." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/13335.

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The expansion of plantations with eucalyptus in Rio Grande do Sul state have been consolidating and occupying areas that anteriorly had no silvicultural tradition in commercial scale. The state occupies the sixth position in planted areas with eucalyptus and pinus in the country and although a significant part of the cultivated area is established in the Pampa Biome, few studies have been conducted to understand the behavior of eucalyptus in this ecosystem. Therefore this study aimed to determine the efficiency of Eucalyptus dunnii, Eucalyptus grandis, Eucalyptus benthamii, Eucalyptus sa

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35

Cera, Rull Andreu. "The ecological significance of nutritional strategies in gypsum plant communities." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/673600.

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Gypsophile species are edaphic endemics of gypsum soils, and they are considered specialists of this stressful substrate. Gypsum endemics from different families and regions of the world tend to show a unique leaf elemental composition, similar to the chemical characteristics of gypsum soils. However, the ecological significance of their unique foliar composition remains unknown. The factors underlying the ecological amplitude of gypsophiles remain also poorly studied. The main literature is based on the distribution of gypsophiles linked to gypsum soils in drylands, although some studies sugg

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36

Terrill, Thomas Howard. "Effects of soil moisture and al-nitrilotriacetate on yeild chemical composition and digestibility of ryegrass (Lolium multiflorum, L.) by meadow voles." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/53088.

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Flooding effects mineral composition of pasture grasses, but little is known concerning effects on mineral metabolism and fiber digestibility in animals. Experiments were conducted to investigate effects of flooding and Al-nitrilo-triacetate (Al-NTA) on growth, chemical composition and digestibility of annual ryegrass (Lolium multiflorum, L.). Ryegrass was grown in a greenhouse experiment on Bucks silt loam soil with two soil moisture levels (flooding and 80% field capacity) and two Al rates (0 and 135 mg/kg) as Al-NTA. Flooding increased Al, Fe, Cu, Ca and fiber and decreased dry matter yie

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37

Shange, Philisiwe Lawrancia. "Nutritional status of geologically different vineyards in Helderberg." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2603.

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Thesis (MscAgric (Viticulture and Oenology))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: Little scientific information regarding the effect of different geological parent materials on grapevine performance is currently available in South Africa. This aspect is of special significance for the Helderberg area, where parent material may change from granite to shale over a short distance. This results in shale- as well as granite-derived soils often occurring within the same vineyard. The objectives of this study were to (i) quantify the nutritional status and other soil propertie

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38

Beulch, Lien da Silveira. "BIOMASSA E NUTRIENTES EM UM POVOAMENTO DE Eucalyptus saligna Smith SUBMETIDO AO PRIMEIRO DESBASTE." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/8720.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Eucalyptus is one of the most cultivated species in Brazil due to its fast increment and adaptation to the various types of soils and its characteristics related to the climate. In the county of Rio Grande do Sul (RS), the area of forestry planting has expanded taking over areas where previously were used for agriculture and cattle. Therefore it has been made necessary the development of researches that aim to fully establish the cultivation of Eucalyptus saligna in a sustainable way. The present study had the objective to quantify

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39

Magnusson, Margareta. "Soil pH and nutrient uptake in cauliflower (Brassica oleracea L. var botrytis) and Broccoli (Brassica oleracea L. var. italica) in northern Sweden : multielement studies by means of plant and soil analyses /." Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5750-5.pdf.

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Salvador, Simone Martini. "QUANTIFICAÇÃO DA BIOMASSA E NUTRIENTES EM PLANTIOS DE Eucalyptus urograndis EM SOLOS DISTINTOS." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/8769.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>This study aimed to obtain information in order to contribute to the nutritional management of Eucalyptus urograndis, based on nutritional characterization, in two different soil types, for the region of Telêmaco Borba - PR. Delimited by 4 parcels located on each floor, making the measurement of all diameters and selection of trees to be felled. The trees were cut at soil level, and the fractionated components: leaves, branch, bark, stem wood, root and ferrule, by collecting a representative sample of each fraction as well as wei

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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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[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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42

Herbert, Nick. "The mineral nutrition of heather on calcareous soil." Thesis, University of Sussex, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285878.

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Ericaceous plants grow preferentially on soils with a low pH, and generally perform poorly in areas with high pH calcareous soils. The reasons for the calcifuge behaviour of species of one genus, Erica, was studied in a calcareous rendzina collected from the South Downs, with a view to identifying physiological characteristics which could be used to select for improved lime-tolerance in the Ericaceae. Varieties of E. carnea and E. x darleyensis were shown to be relatively resistant to chalk-soil compared with varieties of E. vagans. In soil-based screening experiments, E. vagans 'Lyonesse' and

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Souza, Huan Pablo de. "CARACTERIZAÇÃO NUTRICIONAL DO Eucalyptus benthamii Maiden & Cambage EM ÁREA DE PRODUÇÃO DE SEMENTES." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/8767.

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Eucalyptus is the most planted forest genus in Brazil and worldwide. The eucalyptus plantations are established in various environments, and in the state of Rio Grande do Sul, new plantations are being established in the Pampa biome region. Therefore, there is need to use appropriate and correct genetic material nutritional management of stands. This study aimed to characterize nutritionally one Seed Production Area (APS) Eucalyptus benthamii, to six years in the city of São Francisco de Assis - RS, on the farm Estância das Oliveiras, owned by Stora Enso Florestal RS company. For the study, ni

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Santos, Francisco SÃrgio Ribeiro dos. "Production and nutrition in strawberry crop soil and hydroponic." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13165.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Traditional soil based strawberry production currently faces some obstacles, both by excessive use of pesticides, as the diseases caused by fungi and other pathogens and ergonomic difficulties of cultivating the soil. Strawberry soilless cultivation combined with greenhouse and the use of substrate promotes some advantages such as: eliminating the use of products for soil disinfection, precocity, increased yields, better crop management conditions and crop protection against adverse weather conditions, pest attacks and diseases.. Th

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Cottes, Jeremy Jean-Guy. "Le couple Eh/pH du sol : sa mesure, son impact sur la mobilité des nutriments et la croissance du tournesol." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0079.

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Ce travail de thèse s’inscrit dans un contexte d’agriculture durable qui vise à consommer de moins en moins d’intrants tout en maintenant des niveaux de production de biomasse croissante, aussi bien en termes de quantité que de qualité. De tels niveaux ne peuvent être atteints qu’à la condition que les végétaux cultivés puissent se développer dans des conditions optimales, et notamment avoir accès aux éléments minéraux essentiels à leur croissance. De nombreux facteurs interviennent dans la mise à disposition des nutriments présents dans le sol pour les cultures comme le pH ou le potentiel d’o

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Buchler, K. (Konrad). "Investigations of nutrient stress in some forestry areas of South Africa." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52897.

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Thesis (MScFor)--Stellenbosch University 2002.<br>ENGLISH ABSTRACT: One of the greatest .limitations to the productivity of a plantation forest is poor nutrient status of the soil. Empirical application of corrective treatments are marginally successful in some cases, but because of limited understanding of the soiltree system, most nutritional problems go unnoticed or are accepted as a conceivable growth constraint. The aim of this investigation was to identify nutrient growth problems through field observations and to determine means of confirming these nutrient imbalances. Poor and

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Rodrigues, Fernando Antonio Vieira. "Disponibilidade de cobre e zinco para mudas de eucalipto em solos de Cerrado." Universidade Federal de Viçosa, 2009. http://locus.ufv.br/handle/123456789/5417.

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Made available in DSpace on 2015-03-26T13:53:08Z (GMT). No. of bitstreams: 1 texto completo.pdf: 393357 bytes, checksum: 48579cc6ca03f6886f75a7b153778817 (MD5) Previous issue date: 2009-02-18<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Brazil is one of the biggest producers of cellulose, paper and vegetal coal of the world, and the activities related to planted forests contribute to 3.5 % of the Gross Domestic Product (PIB) of the country. The eucalypt is the forest essence that stands out, with a planted area of 3.75 millions of hectares, and the state of Minas Gerai

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Yeap, Simon Guo Hong. "Implications of soil water repellence for crop growth and nutrition." Thesis, Yeap, Simon Guo Hong (2020) Implications of soil water repellence for crop growth and nutrition. PhD thesis, Murdoch University, 2020. https://researchrepository.murdoch.edu.au/id/eprint/59040/.

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In water-limited environments, dryland crop and pasture production on water-repellent sandy soils is often constrained by reduced water infiltration, accentuated overland flow and soil erosion, unstable wetting patterns, and the development of preferential flow paths in the soil profile, which consequently cause considerable spatial heterogeneity in soil water content, increased prevalence of isolated dry zones, and decreased overall soil water retention. The same processes are also likely to affect soil nutrient bioavailability and plant nutrient uptake. Indeed, while problems with crop nutri

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Bois, Claudette Hélène. "The effect of timber harvest and wildfire on soil physical and nutritional dynamics in two boreal forest ecosite types in eastern Manitoba /." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80229.

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Forest ecosystems undergo both natural and human induced disturbances. Depending on disturbance type, soil physical and chemical parameters show different response patterns during the recovery phase. An added level of complication is the ecological site types occurring throughout a forested area. The identification of indicators of soil fertility and the successful emulation of a natural disturbance regime were the scope of this research.<br>The research presented herein took place in the Manitoba Model Forest (MBMF), located in eastern Manitoba, where the natural disturbance regime is

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Raphuthing, Manneheng Violet. "Association between geophagia and haematological parameters of iron deficiency anaemia amongst geophagic Qwa-Qwa women." Thesis, Bloemfontein: Central University of Technology, Free State, 2015. http://hdl.handle.net/11462/239.

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Thesis (M. Tech. (Biomedical Technology)) -- Central University of Technology, Free State, [2014]<br>Pica is the habitual eating of non-food substances by humans and animals. It has different subgroups and these are defined by the ingested substance. Moreover, geophagia is a type of pica that refers to the consistent eating of mostly earth and earth-like substances such as clay and soil. It is observed in both sexes, all age groups and in different ethnic groups around the world. There are many reasons people give for the practice of geophagia, such as culture, hunger and h

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