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Dissertations / Theses on the topic 'Lysimeter'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

McGinley, Susan. "The Weighing Lysimeter Project." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1993. http://hdl.handle.net/10150/622350.

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2

Stanley, Mary Helen. "Suction Cup Lysimeter Method for Extracting Pine Bark Substrate Solution." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/42244.

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The objective of this study was to determine the effectiveness of suction cup lysimeters (SCL) in extracting substrate solution from pine bark substrates. Lysimeter types tested were 4.8-cm diameter with a Â½ or 1-bar air-entry value (AEV) and 2.2-cm diameter also with a Â½ or 1-bar AEV. Sufficient volume could be obtained when a vacuum pressure of 30, 40 or 50 cb was applied to lysimeters with a minimum extraction time of five minutes. The 2.2-cm lysimeters were found to be suitable for extracting solution if smaller sample volumes were needed. To determine effect of vacuum pressure and e

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3

Amter, Steven 1956. "Injection/recovery lysimeter technique for unsaturated zone soil-water extraction." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/191933.

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Current methods of vacuum lysimetry only allow water samples to be collected from the unsaturated zone in relatively wet soils. This thesis presents the results of computer simulation and field testing of a promising new technique that allows water samples to be collected regardless of antecedent moisture content. Injection of a chemically neutral fluid will increase the moisture content of a relatively dry soil, allowing the collection of a sample that contains soil water diluted in the injection fluid. This can be analyzed to yield qualitative chemical data. Although injection was found to a

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4

Goldenfum, Joel Avruch. "Soil water flow processes : a critical evaluation using numerical simulations and lysimeter data." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339212.

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5

Tirado-Corbala, Rebecca. "A Lysimeter Study of Vadose Zone Porosity and Water Movement in Gypsum Amended Soils." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1290111537.

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6

Amankwah, Edward Akwasi. "Predictive Modeling of Organic Pollutant Leaching and Transport Behavior at the Lysimeter and Field Scales." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1195122485300-99209.

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Soil and groundwater pollution has become a global issue since the advent of industrialization and mechanized agriculture. Some contaminants such as PAHs may persist in the subsurface for decades and centuries. In a bid to address these issues, protection of groundwater must be based on the quantification of potential threats to pollution at the subsurface which is often inaccessible. Risk assessment of groundwater pollution may however be strongly supported by applying process-based simulation models, which turn out to be particularly helpful with regard to long-term predictions, which cannot

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7

Kelemen, Julia C. "Effects of tree encroachment on the water balance of a Scottish raised mire : a lysimeter study." Thesis, University of Dundee, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320593.

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8

Johansson, Pontus. "Utvärdering av fosforläckageefter stallgödsling med hjälp av lysimeterteknik : Evaluation of phosphorus leaching aftermanure application using lysimeter techniques." Thesis, Mark och miljö, SLU, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-111172.

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<p>Based on laboratory studies with lysimeters, the concentrations of dissolved reactive phosphorus</p><p>(DRP) and particulate phosphorus, which is the main part of other P (OVRP), has been studied in</p><p>percolating water. The experiment was conducted through irrigation of small soil columns</p><p>containing clay topsoil from an experimental field in Västergötland. Three rain simulations were</p><p>consecutively performed. DRP concentrations in the percolating water ranged between 0.2 - 0.3</p><p>mg·L</p><p>clearly related to the phosphorus concentration in the soil, measured in a soil ext

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9

Hu, Qing. "Migration and plant uptake of radionuclides in laboratory soil columns and field lysimeter with contaminated water tables." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287371.

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10

Mangwende, Tapera Elias. "Quantifying nitrogen leaching in wheat (Triticum aestivum L.) using lysimeter stable isotope conservative tracer and modelling techniques." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/65909.

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Nitrogen (N) leaching is one of the important pathways that leads to water pollution, and previous studies have highlighted the difficulty in measuring it. The purpose of this study was to evaluate different techniques used to quantify nitrate-N (NO3-N) leaching load and determine fertiliser N use efficiency (FNUE). Lysimeter and field trial sites were planted with wheat (Triticum aestivum) (PAN3400 cultivar) at the University of Pretoria Experimental Farm, Hatfield, Pretoria. Two weighing lysimeters and a drain gauge were installed at the lysimeter trial site. Water content sensors and suctio

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11

Klein, Markus. "Langjähriger Wasserhaushalt von Gras- und Waldbeständen Entwicklung, Kalibrierung und Anwendung des Modells LYFE am Gross-Lysimeter St. Arnold /." [S.l.] : [s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961677082.

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12

Osberg, Peter Martin. "Lysimeter measurements of salal understory evapotranspiration and forest soil evaporation after salal removal in a Douglas-fir plantation." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26018.

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Two weighing lysimeters were constructed in a 23-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stand. The salal (Gaultheria shallon Pursh.) understory was mechanically removed from a 30 x 40 m plot and one lysimeter was located at the center of this plot to measure daily forest soil evaporation (E[sub s]). For 8 consecutive days, in August 1984, E[sub s] ranged between 0.08 and 0.34 mm d⁻¹ which was 15-18% of the daily total stand evapotranspiration. In July 1985, after removing salal from the second lysimeter, which was positioned under a less dense tree canopy, E[sub s] was 0.3

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13

Jebellie, Seyed Jalal. "A lysimeter study to determine fate and transport of three agricultural herbicides under different water table management systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ36990.pdf.

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Jebellie, Seyed J. "A lysimeter study to determine fate and transport of three agricultural herbicides under different water table management systems /." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34649.

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Subirrigation systems are generally used in humid areas to provide suitable moisture conditions for plant growth. These systems can also be used to reduce pesticide loadings from agricultural lands, since they tend to keep the discharging waters within farm boundaries for extended periods of time. This allows for greater pesticide microbial and chemical degradation.<br>A three-year field lysimeter study was initiated to investigate the role of subirrigation systems in reducing the risk of water pollution from the three most commonly used herbicides in Quebec, namely atrazine (2-chloro-4[ethyla

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15

Marcoline, Joseph R. "Investigations of water and tracer movement in covered and uncovered unsaturated waste rock." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1011.

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A better understanding of the hydrogeology of mine waste rock and cover systems is essential for the quantification, prediction and reduction of metals loading to the receiving environment. A series of experiments were conducted on an instrumented intermediate-scale waste rock pile at the Cluff Lake Mine in Saskatchewan to investigate the changes in flow and solute transport within coarse waste rock under three different surface conditions. Following these studies, the waste rock pile was deconstructed, structures were mapped, and samples were collected for physical characterization and por

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16

Henry, William Nathan. "Evapotranspiration, Consumptive Water Use, And Responses To Self-Imposed Drought Of Three Warm Season Grasses Grown In A Semi-Arid Region." Thesis, The University of Arizona, 2007. http://hdl.handle.net/10150/193382.

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Evapotranspiration rates (ET) and consumptive water use (CWU) were measured for three desert turfgrasses using weighing lysimeters with a calcined clay growth medium. Water use rates were compared over a two-year study for 'Sea Isle I' seashore paspalum (Paspalum vaginatum) and A138 desert saltgrass (Distichlis spicata), along with 'Tifway' bermudagrass (Cynodon dactylon x Cynodon transvaalensis). Saltgrass showed elevated leaf canopy temperatures for extended periods before exhibiting visible wilt symptoms while 'Tifway' bermudagrass and seashore paspalum wilted readily, even at relatively

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17

Kelly, Harold Lorain Jr 1958. "Remote measurement of turf water stress and turf biomass." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/276995.

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Increasing irrigation efficiency on turfgrass could help reduce water consumption on large turf facilities. Two experiments were conducted using perennial ryegrass (Lolium perenne (L.) Derby) to evaluate the potential of using remote sensing to estimate turf water status, predict daily evapotranspiration (ET), and estimate turf biomass. In the first experiment a crop water stress index, utilizing remotely sensed canopy temperature, were used to schedule irrigations on 6 of 10 drainage lysimeters. Three of the remaining lysimeters were irrigated used on meteorological estimates of ET calculated

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18

Shah, Sanjay Bikram. "Agronomic and Nitrate Leaching Impacts of Pelletized versus Granular Urea." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/29201.

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Agronomic and water quality impacts of urea particle size were evaluated through field and laboratory experiments and mathematical modeling. In a two-year field study, corn silage yield, corn nitrogen (N) removal, and nitrate-N (NO₃⁻-N) leaching from urea pellets (1.5 g each) and granules (0.01-0.02 g each) applied at 184 kg-N/ha were compared. A control treatment (no N) and two other N application rates (110 and 258 kg-N/ha) were also included. Urea particle size impact on dissolution rate, dissolved urea movement, mineralization, and N0³-N leaching were evaluated in the laboratory. A two-dim

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19

Rahman, Mohd Shafiqur. "Intensive culture of loblolly pine (Pinus taeda L.) seedlings on poorly drained sites in the Western Gulf region of the United States." Texas A&M University, 2003. http://hdl.handle.net/1969.1/272.

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A significant acreage of poorly drained sites occurs in the Western Gulf region of the United States. These sites experience standing water through much of the winter and spring, resulting in poor seedling survival. In addition, the sites occasionally experience a summer drought that affects tree growth. This study was designed to determine the effects of intensive forest management on seedling growth and physiology, and to enhance seedling performance under these harsh conditions. Fertilization, chemical vegetation control and mechanical site preparation were used in different combination

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20

Lena, Bruno Patias. "Consumo hídrico do pinhão-manso (Jatropha curcas L.) irrigado e sem irrigação na fase de formação." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-18072013-104451/.

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O conhecimento da demanda hídrica de uma cultura é fundamental para o planejamento da implantação de novas áreas, bem como para a análise da viabilidade econômica de uma cultura em determinada região. A utilização de culturas para fontes de matéria prima alternativa vem sendo altamente estudada nos últimos anos. Dentre muitas, vem se destacando no cenário nacional e mundial a cultura do pinhão-manso (Jatropha curcas L.) para a produção de biodiesel. O consumo de água por parte do pinhão-manso é pouco conhecida, necessitando ser estudada a fim de aprofundar os conhecimentos sobre a cultura e fo

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21

Nouri, Hamideh, Edward Glenn, Simon Beecham, et al. "Comparing Three Approaches of Evapotranspiration Estimation in Mixed Urban Vegetation: Field-Based, Remote Sensing-Based and Observational-Based Methods." MDPI AG, 2016. http://hdl.handle.net/10150/618720.

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Despite being the driest inhabited continent, Australia has one of the highest per capita water consumptions in the world. In addition, instead of having fit-for-purpose water supplies (using different qualities of water for different applications), highly treated drinking water is used for nearly all of Australia's urban water supply needs, including landscape irrigation. The water requirement of urban landscapes, particularly urban parklands, is of growing concern. The estimation of evapotranspiration (ET) and subsequently plant water requirements in urban vegetation needs to consider the he

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22

Souza, Evandro Luiz Corrêa de 1977. "Comportamento do herbicida tebuthiuron em solo de cultivo de cana-de-açucar utilizando lisimetro de drenagem modificado." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257062.

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Orientador: Luiz Lonardoni Foloni<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola<br>Made available in DSpace on 2018-08-09T06:19:49Z (GMT). No. of bitstreams: 1 Souza_EvandroLuizCorreade_M.pdf: 1554926 bytes, checksum: 5fca9f4a1e8b281ed690d9f29174cb48 (MD5) Previous issue date: 2007<br>Resumo: O tebuthiuron é um dos herbicidas mais usados no plantio de cana-de-açúcar, no Estado de São Paulo. Estudos têm sido realizados para determinar o índice de lixiviação do tebuthiuron e para monitorar sua presença nos mananciais de águas superficiais e sub

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23

Cunha, Alessandra Troleis da. "Estimativa experimental da taxa de recarga na zona de afloramento do Aqüífero Guarani, para a região de São Carlos - SP." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-18102016-143331/.

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A engenharia hidrológica visa quantificar os parâmetros que envolvem um balanço híbrido. Nesse domínio, a avaliação da taxa de recarga de aqüíferos subterrâneos torna-se relevante, devido ao uso indiscriminado desse recurso híbrido. Com o auxílio de um lisímetro e a aplicação de conceitos teóricos da infiltração, estimou-se a taxa de recarga potencial do Aqüífero Guarani para a região de São Carlos. O lisímetro, instalado na Estação Hidrometereológica do CRHEA, possui uma área de exposição de 3,6 m2 e profundidade de 1,50 m. Para a coleta do volume infiltrado utilizou-se um sistema de drenagem

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24

Lena, Bruno Patias. "Crop evapotranspiration and crop coefficient of jatropha from first to fourth year." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-06012017-111443/.

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The determination of crop coefficient (Kc) with adequate methodology is important to quantify regional water requirement. Jatropha (Jatropha curcas L.) Kc is still unknown and this information will be essential to provide reliable irrigation parameters, as well as for crop zoning. The objective of this study was to determine jatropha actual crop evapotranspiration (ETc) and Kc from 1st to 4th growing year, and correlate Kc with leaf area index (LAI) and cumulative thermal unit (CTU). The experiment was performed from March 2012 to August 2015 at \"Luiz de Queiroz\" College of Agriculture (ESAL

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25

Stephan, Karl Eckart [Verfasser], Manfred [Gutachter] Frühauf, and Carsten [Gutachter] Lorz. "Standörtliche Wasserhaushaltsgrößen in der südsibirischen Kulunda-Steppe : vergleichende Erhebung und Prüfung von Messdaten aus Lysimeter- und Feldversuchen / Eckart Stephan ; Gutachter: Manfred Frühauf, Carsten Lorz." Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2020. http://d-nb.info/1220698202/34.

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26

Kim, Minseok, Luke A. Pangle, Charléne Cardoso, et al. "Transit time distributions and StorAge Selection functions in a sloping soil lysimeter with time-varying flow paths: Direct observation of internal and external transport variability." AMER GEOPHYSICAL UNION, 2016. http://hdl.handle.net/10150/622147.

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Transit times through hydrologic systems vary in time, but the nature of that variability is not well understood. Transit times variability was investigated in a 1 m(3) sloping lysimeter, representing a simplified model of a hillslope receiving periodic rainfall events for 28 days. Tracer tests were conducted using an experimental protocol that allows time-variable transit time distributions (TTDs) to be calculated from data. Observed TTDs varied with the storage state of the system, and the history of inflows and outflows. We propose that the observed time variability of the TTDs can be decom

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27

GonÃalves, Fabricio Mota. "EvapotranspiraÃÃo e coeficientes de cultivo (KC) da cana-de-aÃÃcar irrigada por gotejamento subsuperficial." Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5272.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Sugar cane is one of the crops with the highest level of water consumption, with a high evapotranspiration demand throughout most of its cycle. Knowledge of the sugar cane water demand, the time that irrigation should be applied, and how to irrigate the crop are becoming increasingly important for the sustainable development of irrigated sugar cane cultivation, especially in areas of low water availability, as it is the case in northea stern Brazil. The experiment was carried out at

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28

Santiago, Alailson Venceslau. "Evapotranspiração de referência medida por lisímero de pesagem e estimada por Penman-Monteith (FAO-56), nas escalas mensal e decendial." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/11/11131/tde-16052002-095603/.

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A evapotranspiração de referência (ETo, mm d-1) foi medida por um lisímetro de pesagem acoplado a três células de carga, durante 1996, em Piracicaba, SP. Discute-se as dificuldades operacionais encontradas com esse tipo de lisímetro em dias com chuvas intensas e em seqüência de dias com chuvas intermitentes. A série temporal dos valores medidos diariamente foi agrupada em seqüências de 10 ou 30 dias, gerando conjuntos de valores médios representativos dessas duas escalas de tempo. Média móvel com diversos passos foram usadas para aumentar o número de pontos nos conjuntos gerados e para verific

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Silva, Tonny José Araújo da. "Evapotranspiração e coeficiente de cultivo de maracujazeiros determinados pelo método do balanço de radiação e lisimetria de pesagem hidráulica." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-15072005-152748/.

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Este trabalho foi realizado na área experimental de irrigação, na Fazenda Areão do Departamento de Engenharia Rural da Escola Superior de Agricultura Luiz de Queiroz - ESALQ/USP (Piracicaba-SP). Transplantaram-se mudas de maracujazeiro amarelo (Passiflora edulis Sims f. flavicarpa Deg), cv. IAC 275, com 83 dias após a germinação, para duas parcelas experimentais com espaldeiras na direção Norte-Sul e Leste-Oeste. O método da razão de Bowen foi utilizado na determinação dos fluxos de calor sensível e latente. Foram coletados dados de saldo de radiação, fluxo de calor no solo, gradientes de t

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30

Zanuzo, Lusiani. "Comportamento de cátions percolados oriundos da aplicação de água residuária de suinocultura em solo cultivado com milho." Universidade Estadual do Oeste do Parana, 2007. http://tede.unioeste.br:8080/tede/handle/tede/232.

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Made available in DSpace on 2017-05-12T14:47:20Z (GMT). No. of bitstreams: 1 Lusiani Zanuzo.pdf: 1057343 bytes, checksum: 5bafdf204f0e33b83a453f814d119a9b (MD5) Previous issue date: 2007-07-19<br>The objective of this work was evaluated the cation´s leaching corn planted and irrigated with swine waste water in lysimeters. The factors and levels of treatments were: four levels of with swine wastewater (112.5, 225.0, 337.5 and 450.0 m3 ha-1), two levels of chemical fertilization (50% and 75% of nitrogen recommend) and three repetitions. The time after sowing was considered analysis factor to e

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31

Ferreira, José Orlando Piauilino. "Evapotranspiração e coeficientes de cultura da melancieira irrigada por gotejamento em Alvorada do Gurguéia-PI /." Jaboticabal : [s.n.], 2010. http://hdl.handle.net/11449/105227.

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Resumo: Este experimento foi conduzido em Alvorada do Gurguéia, situada no vale do rio Gurguéia, estado do Piauí, localizado na latitude de 8º 26' S, longitude 43º 47' W e altitude de 251 m. Os objetivos deste estudo foram determinar a evapotranspiração (ETc) e os coeficientes de cultura (Kc) da melancieira irrigada por gotejamento. A evapotranspiração de referência (ETo) foi determinada diariamente por dez modelos de estimativa, com parte dos elementos climáticos obtidos em uma estação agrometeorológica automática localizada no centro da área experimental. Os modelos foram: Penman-Monteith-FA

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Ferreira, José Orlando Piauilino [UNESP]. "Evapotranspiração e coeficientes de cultura da melancieira irrigada por gotejamento em Alvorada do Gurguéia-PI." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/105227.

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Made available in DSpace on 2014-06-11T19:33:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-04-16Bitstream added on 2014-06-13T19:04:52Z : No. of bitstreams: 1 ferreira_jop_dr_jabo.pdf: 1268842 bytes, checksum: 715de8aae3de8bec81a7a441b78ef9c9 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Este experimento foi conduzido em Alvorada do Gurguéia, situada no vale do rio Gurguéia, estado do Piauí, localizado na latitude de 8º 26’ S, longitude 43º 47’ W e altitude de 251 m. Os objetivos deste estudo foram determinar a evapotranspiração (ETc) e os coefic

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Silva, Eduardo Magno Pereira da. "DeterminaÃÃo do coeficiente de cultura da melancia, em solo sob palhada e preparo convencional, na microrregiÃo de Teresina, PiauÃ." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7966.

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Arantes, Kelte Resende. "Desenvolvimento de mudas de cafeeiro cultivadas em tubetes e submetidas a diferentes níveis de déficit hídrico." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-14092007-143001/.

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A cafeicultura é uma atividade de grande importância no cenário sócio-econômico do Brasil, movimentando bilhões de dólares todos os anos e gerando milhares de empregos diretos e indiretos. O sucesso no cultivo de lavouras cafeeiras depende da observação de diversos cuidados, dentre os quais, a escolha de mudas com bom potencial genético, sadias e vigorosas. A utilização de sacos de polietileno como recipiente para o substrato na produção de mudas de cafeeiro apesar de tradicional, vêm perdendo espaço para os tubetes de polietileno rígido. Apesar das vantagens que os tubetes apresentam, como po

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35

Amorim, Marcelo Cid de. "Avaliação da eficácia do lisímetro de lençol freático constante, do tanque classe A e do modelo de Penmam-Monteith (FAO) para estimativa da evapotranspiração de referência (ETo)." Universidade Federal de Viçosa, 1997. http://locus.ufv.br/handle/123456789/5269.

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Made available in DSpace on 2015-03-26T13:50:15Z (GMT). No. of bitstreams: 1 texto completo.pdf: 5817563 bytes, checksum: f16e72452ad83fc41c230357dab962fb (MD5) Previous issue date: 1997-10-07<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>A field research work was carried out to evaluate the FAO Penman- Monteith method, the constant watertable lysimeter and the Class A pan for estimating the reference evapotranspiration (ETo) as a function of the main climatic data (air temperature, relative humidity, wind speed and sunshine duration) obtained in a conventional meteorolog

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SANTOS, Francisco Xavier dos. "Lisímetro de pesagem hidráulica e evapotranspiração de referência por diferentes métodos no agreste pernambucano." Universidade Federal Rural de Pernambuco, 2004. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5314.

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Submitted by (lucia.rodrigues@ufrpe.br) on 2016-08-15T12:20:54Z No. of bitstreams: 1 Francisco Xavier dos Santos.pdf: 549683 bytes, checksum: 494297e19808ff2ad3c483f91e642c5f (MD5)<br>Made available in DSpace on 2016-08-15T12:20:54Z (GMT). No. of bitstreams: 1 Francisco Xavier dos Santos.pdf: 549683 bytes, checksum: 494297e19808ff2ad3c483f91e642c5f (MD5) Previous issue date: 2004-08-12<br>The aim of this work was to build and test the functioning of an hydraulic weighing lysimeter with a mercury piston arranjement, and to relate the reference evapotranspiration (ETo) determined by the lysi

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Carlson, Tyson David, and Tyson David Carlson. "Effect of velocity and water content on the gas-phase partitioning tracer test for the in-situ measurement of soil-water content in a large weighing lysimeter." Thesis, The University of Arizona, 2000. http://hdl.handle.net/10150/626925.

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This thesis describes research conducted to evaluate the efficacy of the gas-phase partitioning tracer method for measuring bulk soil-water content. A series of tracer experiments were conducted at two velocities and water contents in a well instrumented weighing lysimeter. The method is based on introducing gas-phase conservative and water-partitioning tracers into the system. The partitioning tracer dissolves into the water, which retards its movement with respect to a non-partitioning tracer. This retardation is a function of the soil-water content. The soil-water contents estim

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Medeiros, Patrick Valverde. "Análise da evapotranspiração de referência a partir de medidas lisimétricas e ajuste estatístico de estimativas de nove equações empírico-teóricas com base na equação de Penman-Monteith." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-21052008-090008/.

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A quantificação da evapotranspiração é uma tarefa essencial para a determinação do balanço hídrico em uma bacia hidrográfica e para o estabelecimento do déficit hídrico de uma cultura. Nesse sentido, o presente trabalho aborda a análise da evapotranspiração de referência (ETo) para a região de Jaboticabal-SP. O comportamento do fenômeno na região foi estudado a partir da interpretação de dados de uma bateria de 12 lisímetros de drenagem (EToLis) e estimativas teóricas por 10 equações diferentes disponíveis na literatura. A análise estatística de correlação indica que as estimativas da ETo por

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Silva, Leonardo Duarte Batista da. "Evapotranspiração do capim tanzânia (Panicum maximum Jacq.) e grama batatais (Paspalum notatum flugge) utilizando o método do balanço de energia e lisímetro de pesagem." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-22052003-141207/.

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A irrigação de pastagens no Brasil apresentou um crescimento acentuado nos últimos anos, porém devido a ausência de pesquisas sobre a aplicação de água em pastagens, o manejo da irrigação não vem sendo realizado de maneira racional. Os objetivos deste trabalho foram avaliar as relações entre a irradiância solar global e a radiação líquida sobre superfícies vegetadas com capim tânzania (Panicum maximum Jacq.) e com grama batatais (Paspalum notatum flugge); determinar a evapotranspiração do capim tânzania, por meio das medidas de lisímetro de pesagem; aplicar o método do balanço de energia

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Bode, Ralf. "Auslaugung anorganischer Schadstoffe aus Abfall- und Altlastmaterialien." Doctoral thesis, [S.l.] : [s.n.], 2005. http://hdl.handle.net/11858/00-1735-0000-0006-B310-C.

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Prédélus, Dieuseul. "Rôle des hétérogénéités texturale et structurale du sol sur le transfert et la rétention des nanoparticules dans la zone non saturée : Expérimentation et modélisation." Thesis, Vaulx-en-Velin, Ecole nationale des travaux publics, 2014. http://www.theses.fr/2014ENTP0006/document.

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La production croissante des nanoparticules issues du développement des nanotechnologies et leur incorporation dans des produits de consommation vont inévitablement conduire à leur introduction dans l’environnement. Ces particules peuvent constituer un vecteur de substances polluantes en raison du transport facilité des contaminants organiques ou inorganiques potentiellement adsorbés sur leurs surfaces ou représentent elles-mêmes un risque pour l’environnement et la santé humaine. La zone non saturée joue une fonction importante de filtration naturelle des eaux de recharge des nappes. Les méca

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Kaufmann, Vander. "Processo hidrológico e transporte de espécies químicas produzidos por chuva intensa simulada em solos do sul do Brasil." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/78868.

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As atividades agrícolas promovem modificações na estrutura física do solo e nas interações que ocorrem no seu interior. As mudanças promovidas nestas atividades podem gerar alterações do processo hidrogeoquímico no solo. Este estudo tem por objetivo estudar o processo hidrológico e o transporte de espécies químicas em solos agrícolas do Sul do Brasil, quando submetidos à chuva de alta intensidade, em lisímetros de drenagem, que são dispositivos experimentais. Sete lisímetros instalados em quatro bacias hidrográficas situadas nos estados do Sul do Brasil foram utilizados nos experimentos, apres

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Peruchi, Fernanda. "Evapotranspiração real a partir de medidas lisimétricas e sob diferentes condições de disponibilidade hídrica." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-12112009-152605/.

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A evapotranspiração pode ser responsável por mais da metade da saída de água de uma bacia hidrográfica, sendo uma variável importante para o balanço hídrico e para a estimativa da recarga. Nesse sentido, objetivou-se com este trabalho analisar a evapotranspiração de referência (ETo) e real (ETr) para a região de Jaboticabal-SP, assim como verificar a influência da umidade do solo na evapotranspiração. A variação da evapotranspiração de referência foi estudada a partir da interpretação de dados de uma bateria de seis lisímetros de drenagem (EToLis) e estimativas teóricas por três equações d

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Ara?jo, M?rio S?rgio Paiva de. "Coeficientes da cultura e produtividade do cons?rcio de milho caatingueiro com feij?o-de-porco e do repolho plantado na palhada." Universidade Federal Rural do Rio de Janeiro, 2016. https://tede.ufrrj.br/jspui/handle/jspui/1807.

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Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-06-21T17:22:59Z No. of bitstreams: 1 2016 - M?rio S?rgio Paiva de Ara?jo.pdf: 1411691 bytes, checksum: 797d6757b675c1af2aaa3ad4164c44a8 (MD5)<br>Made available in DSpace on 2017-06-21T17:22:59Z (GMT). No. of bitstreams: 1 2016 - M?rio S?rgio Paiva de Ara?jo.pdf: 1411691 bytes, checksum: 797d6757b675c1af2aaa3ad4164c44a8 (MD5) Previous issue date: 2016-02-25<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES<br>The study of crops water demand throughout its development cycle enables the rational use of water,

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Cardoso, Antonio J. "Relationship of waste characteristics to the formation of mineral deposits in leachate collection systems." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001266.

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Paul, George. "Evaluation of surface energy balance models for mapping evapotranspiration using very high resolution airborne remote sensing data." Diss., Kansas State University, 2013. http://hdl.handle.net/2097/15914.

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Doctor of Philosophy<br>Department of Agronomy<br>P.V. Vara Prasad<br>Agriculture is the largest (90%) consumer of all fresh water in the world. The consumptive use of water by vegetation represented by the process evapotranspiration (ET) has a vital role in the dynamics of water, carbon and energy fluxes of the biosphere. Consequently, mapping ET is essential for making water a sustainable resource and also for monitoring ecosystem response to water stress and changing climate. Over the past three decades, numerous thermal remote sensing based ET mapping algorithms were developed and these ha

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Quaglia, Luciano. "Calibração de um lisímetro de pesagem para monitoramento da evaporação do solo sem cobertura vegetal." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11131/tde-24052005-145355/.

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Lisímetros de pesagem tem custos de implantação e manutenção elevados e nem sempre produzem resultados satisfatórios devido a impossibilidade de representarem as muitas situações que ocorrem num sistema de produção agrícola. Foi idealizado um sistema mais simplificado de montagem de lisímetro de pesagem para obtenção de perda de água do solo. Tal sistema utiliza apenas uma célula de carga em cada lisímetro, e mis uma célula no sistema de drenagem. Devido a essa possibilita também a medida da evaporação durante o processo da drenagem. O custo médio da instalação de uma bateria de três lisímetro

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Libardi, Luís Guilherme Polizel. "Evapotranspiração e coeficiente de cultura de mudas pré-brotadas de cana-de-açúcar para manejo de irrigação em cultivo protegido." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/152608.

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Submitted by LUÍS GUILHERME POLIZEL LIBARDI null (lgplibardi@gmail.com) on 2018-01-27T15:29:33Z No. of bitstreams: 1 Dissertação - Versão Digital.pdf: 2640206 bytes, checksum: bad6e8febf253e2526f7f86e7c6e49e6 (MD5)<br>Approved for entry into archive by Karina Gimenes Fernandes null (karinagi@fcav.unesp.br) on 2018-01-29T12:54:39Z (GMT) No. of bitstreams: 1 libardi_lgp_me_jabo.pdf: 2595561 bytes, checksum: 77d88f2a795f0ab5ee9a02d2f29a9eb5 (MD5)<br>Made available in DSpace on 2018-01-29T12:54:39Z (GMT). No. of bitstreams: 1 libardi_lgp_me_jabo.pdf: 2595561 bytes, checksum: 77d88f2a795f0ab5ee

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Leeder-Kamanda, Götz. "Das Verhalten von BTX-Aromaten in der ungesättigten Bodenzone." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola&quot, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:105-3979693.

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Es wurden Versuche für die ungesättigte Zone duchgeführt, um das Verhalten kleinerer Einträge an Benzen, Toluen und Xylen im Oberboden anschätzen zu können. In einem Vorversuch wurde der Verteilungskoeffizient Gas-Wasser für verschiedene Wässer bestimmt. Der Einfluss der Temperatur hatte einen größeren Einfluss als der Chemismus des Wassers. Die Sorption wurde ermittelt und zeigte sich als ein über sechs Größenordnungen linearer Prozess. Sie ist abhängig vom Humusgehalt. Versuche zur Desorption zeigen Unterschiede zwischen den Aromaten. Xylen desorbiert am langsamsten. Fünf, z.T. mehrmonatige

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Júnior, Cícero Renê Almeida Barboza. "Evapotranspiração da lima ácida \'Tahiti\' (Citrus latifolia Tan.) determinada por lisimetria de pesagem." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-14022008-164620/.

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O Brasil é o maior produtor mundial de citros, com destaque para o estado de São Paulo, maior produtor nacional. Recentes estudos mostram que a área irrigada de citros no estado tem aumentado significativamente nos últimos anos. Porém, a falta de informações sobre o manejo eficiente da irrigação na cultura do citros é uma das principais dificuldades enfrentadas pelos produtores. Com o intuito de atender essa necessidade, este trabalho teve como objetivos determinar a evapotranspiração de uma planta adulta de limeira ácida \'Tahiti\' (Citrus latifolia Tan.) e o coeficiente de cultivo no período

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