Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 23
Primeira ... 12 ... Última
Imagem não selecionada

Imprime registro no formato completo
An integrated social and ecological modeling framework—impacts of agricultural conservation practices on water quality Ecology and Society
Daloğlu, Irem; School of Natural Resources and Environment, University of Michigan; daloglu@umich.edu; Nassauer, Joan Iverson; School of Natural Resources and Environment, University of Michigan; nassauer@umich.edu; Riolo, Rick; Center for the Studies of Complex Systems, University of Michigan; rlriolo@umich.edu; Scavia, Donald; School of Natural Resources and Environment, University of Michigan; Graham Environmental Sustainability Institute, University of Michigan; scavia@umich.edu.
We present a modeling framework that synthesizes social, economic, and ecological aspects of landscape change to evaluate how different agricultural policy and land tenure scenarios and land management preferences affect landscape pattern and downstream water quality. We linked a stylized agent-based model (ABM) of farmers’ conservation practice adoption decisions with a water quality model, the Soil and Water Assessment Tool (SWAT), to simulate the water quality effects of changing land tenure dynamics and different policies for crop revenue insurance in lieu of commodity payments over 41 years (1970–2010) for a predominantly agricultural watershed of Lake Erie. Results show that non-operator owner involvement in land management...
Tipo: Peer-Reviewed Reports Palavras-chave: ABM; Agricultural policy; Agriculture; Conservation practice; Integrated modeling; SWAT; Water quality.
Ano: 2014
Imagem não selecionada

Imprime registro no formato completo
Aplicabilidad del modelo SWAT para la estimación de la erosión hídrica en las cuencas de México Agrociencia
Rivera-Toral,Francisco; Pérez-Nieto,Samuel; Ibáñez-Castillo,L. Alicia; Hernández-Saucedo,F. Raúl.
El modelo SWAT (Soil and Water Assessment Tool) puede ser una herramienta de gran ayuda en la estimación de sedimentos y escurrimientos, sin embargo, su aplicación tiene algunas limitantes. En este estudio se revisó la aplicabilidad del modelo de simulación hidrológica SWAT en las cuencas de México, aplicándolo a la cuenca Ixtapan del Oro, Estado de México, para estimar la pérdida de suelo, comparando los resultados con los valores estimados mediante la técnica del álgebra de mapas. Se encontró que SWAT subestima el factor topográfico en las subcuencas, sobre todo cuando las pendiente es mayor de 25 %, ya que realiza una mala estimación de la longitud de la pendiente, asignándoles valores constantes de 0.05 m. Ese valor se puede corregir si se estima fuera...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SWAT; Erosión; Factor topográfico; Ixtapan del Oro.
Ano: 2012 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952012000200001
Imagem não selecionada

Imprime registro no formato completo
Calibration and Validation of SWAT for the Upper Maquoketa River Watershed AgEcon
Kanwar, Ramesh S.; Reungsang, Pipat; Jha, Manoj K.; Gassman, Philip W.; Ahmad, Khalil; Saleh, Ali.
A validation study has been performed using the Soil and Water Assessment Tool (SWAT) model with data collected for the Upper Maquoketa River Watershed (UMRW), which drains over 16,000 ha in northeast Iowa. This validation assessment builds on a previous study with nested modeling for the UMRW that required both the Agricultural Policy EXtender (APEX) model and SWAT. In the nested modeling approach, edge-of-field flows and pollutant load estimates were generated for manure application fields with APEX and were then subsequently routed to the watershed outlet in SWAT, along with flows and pollutant loadings estimated for the rest of the watershed routed to the watershed outlet. In the current study, the entire UMRW cropland area was simulated in SWAT, which...
Tipo: Working or Discussion Paper Palavras-chave: Calibration; Modeling; Nitrate; SWAT; Validation; Water quality; Resource /Energy Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/18440
Imagem não selecionada

Imprime registro no formato completo
Calibration, validation and evaluation of a lumped hydrologic model in a mountain area in southern Ecuador Agrociencia
Oñate-Valdivieso,Fernando; Bosque-Sendra,Joaquín; Sastre-Merlin,Antonio; Ponce,V. Miguel.
Abstract In South America the density of meteorological and hydrological stations is low with a minimum number of monitored variables; this limits the application of complex hydrological models for the study of water resources. An alternative may be to use simplified models that need a small number of variables. The study performance of simplified models in scarce information conditions is important in order to know water resources availability in areas with these conditions. The performance of the Temez lumped model and the SWAT model (semi-distributed model) were evaluated with data from six basins at the border region between Ecuador and Peru, with areas that vary between 200 and 2642 km2. Precipitation and temperature recorded in 43 climatological...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Temez; Lumped hydrological model; Hydrological models comparison; SWAT.
Ano: 2016 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952016000800945
Imagem não selecionada

Imprime registro no formato completo
El modelo de simulación hidrológica SWAT aplicado en la cuenca del río Amajac, Hidalgo, México Colegio de Postgraduados
Mata Espinosa, Héctor Armando.
El objetivo de ésta investigación fue realizar una simulación de la producción de agua en la cuenca del río Amajac, Hidalgo, México, mediante la aplicación del modelo hidrológico SWAT (Soil and Water Assessment Tool). Previamente se realizó una calibración del modelo, ajustando sus parámetros más sensibles, tales como: curva numérica (CN2), capacidad de agua disponible en el suelo, factor de compensación de la evaporación en el suelo, y coeficiente de agua subterránea. En la etapa de simulación se empleó el Sistema de Información Geográfica Arc View 3.2 y para alimentar el modelo, se utilizó la información climatológica proporcionada por el Servicio Meteorológico Nacional (SMN) para un periodo de cinco años (1996-2000), la información hidrométrica fue...
Tipo: Tesis Palavras-chave: Simulación; Producción de agua; Modelo hidrológico; SWAT; Maestría; Hidrociencias; Simulation; Water yield; Hydrologic model; SWAT.
Ano: 2008 URL: http://hdl.handle.net/10521/1600
Imagem não selecionada

Imprime registro no formato completo
Estimation of sediment production in oil palm expansion areas in the Amazon AGRIAMBI
Silva,Antonio K. L.; Sousa,Adriano M. L. de; Santos,Joyse T. S. dos; Villela,João M.; Martorano,Lucieta G.; Crestana,Silvio.
ABSTRACT Currently, an activity that has become strategic at a national level is the cultivation of oil palm (Elaeis guineensis) in the northeast region of the Pará State, in eastern Brazilian Amazon. However, the impacts of this crop expansion on the hydro-sedimentological cycle are still unknown. Therefore, this study estimated the impacts of oil palm crop expansion on sediment production in a sub-basin under consolidated use of this crop. The Soil and Water Assessment Tool (SWAT) model was applied in the Mariquita sub-basin, calibrated by the flow regionalization technique, using data measured in the field with a current meter. Simulation results indicated an increase in sediment production between the years 2008 and 2013, which can be attributed to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SWAT; Ungauged river basin; Secondary forest; Northeastern Pará.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000500344
Imagem não selecionada

Imprime registro no formato completo
Hydrologic model of the Paracatu River Basin: calibration and validation. Infoteca-e
WEHLING, M.; RODRIGUES, L. N.; DAM, J. C. van; DIJKSMA, R..
A Bacia do Rio Paracatu é um afluente do Rio São Francisco com uma área total de drenagem de 45.600 km2. O Rio Paracatu é responsável por 24% da vazão do rio São Francisco, com uma descarga média variando entre 200 m3/s e 1.000 m3/s. O uso do solo nessa bacia é predominantemente Cerrado, cuja área diminuiu significativamente nos últimos 30 anos. Atualmente faz-se necessário entender melhor quais serão os impactos nos recursos hídricos advindos das mudanças climáticas e no uso da terra nessa bacia. Esse artigo objetivou preparar, calibrar e validar um modelo de simulação hidrológica para simulação das vazões do rio Paracatu. Para isto, utilizou-se o modelo hidrológico SWAT, que é um modelo físico e distribuído, sendo o clima, a hidrologia, as propriedades...
Tipo: Capítulo em livro técnico (INFOTECA-E) Palavras-chave: Recursos hídricos; Nash Sutcliffe; SWAT; Rio Paracatu; Modelo hidrológico.; Cerrado..
Ano: 2016 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1063711
Imagem não selecionada

Imprime registro no formato completo
Hydrological simulation as subside for management of surface water resources at the Mortes River Basin Ciência e Agrotecnologia
Eduardo,Eliete Nazaré; Mello,Carlos Rogério de; Viola,Marcelo Ribeiro; Owens,Phillip Ray; Curi,Nilton.
ABSTRACT Hydrological models are tools which describe processes and allow predicting the results of making management decisions, and are an important water resource management tool, especially for small-sized watersheds. This work had as an objective to test different calibration strategies and apply the SWAT model for hydrological simulation of the Mortes River Basin, MG. We evaluated 6 fluviometric stations, with drainage area between 272 and 6070 km² for purposes of water resource management. The evaluation of the model performance was conducted by using Nash-Sutcliffe coefficients (CNS) and percent bias (PBIAS). The results obtained from the statistic indices applied in the analysis of the model performance qualified the SWAT hydrological model as...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental management; SWAT; Drainage area; Calibration.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000400390
Imagem não selecionada

Imprime registro no formato completo
Hydrological simulation using SWAT model in headwater basin in Southeast Brazil REA
Pereira,Donizete dos R.; Martinez,Mauro A.; Almeida,André Q. de; Pruski,Fernando F.; Silva,Demetrius D. da; Zonta,João H..
Hydrological models are important tools that have been used in water resource planning and management. Thus, the aim of this work was to calibrate and validate in a daily time scale, the SWAT model (Soil and Water Assessment Tool) to the watershed of the Galo creek , located in Espírito Santo State. To conduct the study we used georeferenced maps of relief, soil type and use, in addition to historical daily time series of basin climate and flow. In modeling were used time series corresponding to the periods Jan 1, 1995 to Dec 31, 2000 and Jan 1, 2001 to Dec 20, 2003 for calibration and validation, respectively. Model performance evaluation was done using the Nash-Sutcliffe coefficient (E NS) and the percentage of bias (P BIAS). SWAT evaluation was also...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydrological modeling; SWAT; Calibration; Validation.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000400018
Imagem não selecionada

Imprime registro no formato completo
IMPACT OF WATERSHED SUBDIVISION LEVEL ON FLOWS, SEDIMENT LOADS, AND NUTRIENT LOSSES PREDICTED BY SWAT AgEcon
Jha, Manoj K.; Gassman, Philip W.; Secchi, Silvia; Gu, Roy; Arnold, Jeffrey G..
The size, scale, and number of subwatersheds can affect a watershed modeling process and subsequent results. The objective of this study was to determine the appropriate level of subwatershed division for simulating sediment yield. The Soil and Water Assessment Tool (SWAT) model with a geographic information system interface (AVSWAT) was applied to four Iowa watersheds that varied greatly in drainage area. Annual output was analyzed from each simulation, which was executed for 30 years using climatic data representing the 1970 to 2000 period. The optimal threshold subwatershed size of the total drainage area to adequately predict sediment yield was found to be around 3 percent. Decreasing the size of subwatersheds beyond this level does not significantly...
Tipo: Working or Discussion Paper Palavras-chave: AVSWAT; Modeling of sediment yield; SWAT; Soil and Water Assessment Tool; Threshold subwatershed size; Watershed subdivision; Resource /Energy Economics and Policy.
Ano: 2002 URL: http://purl.umn.edu/18487
Imagem não selecionada

Imprime registro no formato completo
Impacts of deforestation on water balance components of a watershed on the Brazilian East Coast Rev. Bras. Ciênc. Solo
Pereira,Donizete dos Reis; Almeida,André Quintão de; Martinez,Mauro Aparecido; Rosa,David Rafael Quintão.
The Brazilian East coast was intensely affected by deforestation, which drastically cut back the original biome. The possible impacts of this process on water resources are still unknown. The purpose of this study was an evaluation of the impacts of deforestation on the main water balance components of the Galo creek watershed, in the State of Espírito Santo, on the East coast of Brazil. Considering the real conditions of the watershed, the SWAT model was calibrated with data from 1997 to 2000 and validated for the period between 2001 and 2003. The calibration and validation processes were evaluated by the Nash-Sutcliffe efficiency coefficient and by the statistical parameters (determination coefficient, slope coefficient and F test) of the regression...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SWAT; Watershed management; Hydrological modeling; Atlantic Forest.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400030
Imagem não selecionada

Imprime registro no formato completo
Modeling of Escherichia coli Fluxes on a Catchment and the Impact on Coastal Water and Shellfish Quality ArchiMer
Bougeard, Morgane; Le Saux, Jean-claude; Perenne, Nicolas; Baffaut, Claire; Robin, Marc; Pommepuy, Monique.
The simulation of the impact of Escherichia coli loads from watersheds is of great interest for assessing estuarine water quality, especially in areas with shellfish aquaculture or bathing activities. For this purpose, this study investigates a model association based on the Soil and Water Assessment Tool (SWAT) coupled with a hydrodynamic model (MARS 2D; IFREMER). Application was performed on the catchment and estuary of Daoulas area (France). The daily E. coli fluxes simulated by SWAT are taken as an input in the MARS 2D model to calculate E. coli concentrations in estuarine water and shellfish. Model validation is based on comparison of frequencies: a strong relationship was found between calculated and measured E. coli concentrations for river quality...
Tipo: Text Palavras-chave: SWAT; Watershed; Estuary modeling; E coli; Shellfish; Water quality.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00033/14393/11728.pdf
Imagem não selecionada

Imprime registro no formato completo
Modeling of Faecal Contamination in Water from Catchment to Shellfish Growing Area ArchiMer
Bougeard, Morgane; Le Saux, Jean-claude; Perenne, Nicolas; Le Guyader, Soizick; Pommepuy, Monique.
During rainstorms, watersheds can introduce large amounts of faecal pollution into the rivers and sea, leading to shellfish contamination. In this study, we assessed Escherichia coli fluxes from a catchment, and their impact on estuarine water quality, using two assembled models. For the catchment, the agro-hydrological model SWAT was implemented integrating land uses, soil, topography, rainfall and other climatic data on Daoulas watershed (France). Initially, the SWAT model was calibrated and validated for river flow rates, and results were found satisfactory. Subsequently, different faecal contamination sources were integrated into the model: point sources (WWTP discharges into rivers) and non-point sources (manure spreading on fields). During rainfall...
Tipo: Text Palavras-chave: Modeling; SWAT; MARS; E. coli; Shellfish; Catchment; Estuary.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00066/17748/15270.pdf
Imagem não selecionada

Imprime registro no formato completo
Potencial para producir Jatropha curcas L. como materia prima para biodiésel en el estado de Veracruz. Colegio de Postgraduados
Inurreta Aguirre, Héctor Daniel.
Existe gran interés alrededor del mundo en utilizar el aceite de Jatropha curcas L. como materia prima para biodiésel; sin embargo, con el fin de aumentar la eficiencia energética y económica de su cultivo, es necesario identificar áreas con condiciones agroecológicas óptimas y estimar su productividad en zonas marginales para evitar competencia con la producción de alimentos. El objetivo de este trabajo fue conocer la variación del potencial productivo de Jatropha curcas L. en respuesta a las distintas condiciones edafoclimáticas del estado de Veracruz. Se utilizó el modelo Soil and Water Assessment Tool (SWAT) para simular el rendimiento de semilla de Jatropha curcas L. Las unidades de cálculo fueron las Unidades de Respuesta Hidrológica (URH), definidas...
Palavras-chave: SWAT; Modelos de simulación; Zonificación; SIG; Simulation models; Zoning; GIS; Agroecosistemas locales; Maestría.
Ano: 2012 URL: http://hdl.handle.net/10521/1700
Imagem não selecionada

Imprime registro no formato completo
Simulação da produção de sedimentos para a microbacia hidrográfica do Ribeirão dos Marins (SP) Rev. Bras. Ciênc. Solo
Machado,R. E.; Vettorazzi,C. A..
O modelo SWAT (Soil and Water Assessment Tool) foi aplicado para simular a carga de sedimentos produzida pela microbacia hidrográfica do Ribeirão dos Marins, em Piracicaba (SP), no biênio 1999/2000. A aplicação do modelo requer a entrada dos dados na forma espacializada que foi feita com o auxílio de uma interface entre o modelo e um Sistema de Informações Geográficas (SIG's). A microbacia foi discretizada em sub-bacias para determinar os parâmetros de entrada no modelo. Os resultados obtidos na simulação da produção de sedimentos foram comparados aos dados observados em um posto hidrossedimentométrico, localizado no terço superior da microbacia, utilizando o Coeficiente de Eficiência de Nash e Sutcliffe (COE) e o desvio dos dados simulados em relação aos...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Erosão; Modelos hidrológicos; Poluição difusa; SIG's; SWAT.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832003000400018
Imagem não selecionada

Imprime registro no formato completo
Simulação de cenários alternativos de uso da terra em uma microbacia utilizando técnicas de modelagem e geoprocessamento Rev. Bras. Ciênc. Solo
Machado,R. E.; Vetorazzi,C. A.; Xavier,A. C..
O modelo SWAT (Soil and Water Assessment Tool) foi aplicado na simulação de cenários alternativos de uso da terra na microbacia hidrográfica do Ribeirão dos Marins, em Piracicaba (SP), no biênio 1999/2000. Dois cenários foram simulados. No primeiro, o uso atual foi mantido numa faixa de mata ciliar de 30 m em toda a extensão dos cursos d'água e de 50 m ao redor das nascentes, de acordo com o Código Florestal. No segundo cenário, como as pastagens ocupavam 30,9 % da área da microbacia, nas encostas mais íngremes, com alto potencial erosivo, as áreas de pastagem foram substituídas por vegetação florestal. As simulações dos dois cenários foram comparadas com as condições do cenário atual em termos de produção de sedimentos. Os cenários geraram diferentes...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Modelos de simulação; Poluição difusa; Sedimentos; SIG's; SWAT.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832003000400017
Imagem não selecionada

Imprime registro no formato completo
Simulação hidrológica em uma bacia hidrográfica representativa dos Latossolos na região Alto Rio Grande, MG AGRIAMBI
Andrade,Márcio A.; Mello,Carlos R. de; Beskow,Samuel.
A simulação hidrológica consiste de uma importante ferramenta para subsidiar a gestão dos recursos hídricos em bacias hidrográficas. A bacia hidrográfica em estudo está localizada na região Alto Rio Grande, sul do estado de Minas Gerais, drenando uma área de 32 km² diretamente para o reservatório da Usina Hidrelétrica de Camargos (UHE - Camargos/Cemig) conhecida como Bacia Hidrográfica do Ribeirão Jaguara (BHRJ). Neste trabalho objetivou-se calibrar e validar o modelo SWAT (Soil and Water Assessment Tool) para a simulação do escoamento superficial na BHRJ. Para isto, o modelo requer mapas georreferenciados de uso atual do solo, unidades pedológicas e modelo digital de elevação, além de dados meteorológicos e hidrológicos. Para este estudo foi aplicada uma...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Modelo hidrológico; SWAT; Escoamento superficial; Balanço hídrico.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013000100010
Imagem não selecionada

Imprime registro no formato completo
THE IMPACTS OF CLIMATE CHANGE ON STREAM FLOW IN THE UPPER MISSISSIPPI RIVER BASIN: A REGIONAL CLIMATE MODEL PERSPECTIVE AgEcon
Jha, Manoj K.; Pan, Zaitao; Takle, Eugene S.; Gu, Roy.
We evaluate the impact of climate change on stream flow in the Upper Mississippi River Basin (UMRB) by using a regional climate model (RCM) coupled with a hydrologic model, the Soil and Water Assessment Tool (SWAT). The SWAT model was calibrated and validated against measured stream flow data using observed weather data and inputs from the Environmental Protection Agency's BASINS (Better Assessment Science Integrating Point and Nonpoint Sources) geographical information/database system. The combined performance of the SWAT and RCM was examined using observed weather data as a lateral boundary condition in the RCM. The SWAT and RCM were found to perform well, especially on an annual basis. The potential impacts of climate change on water yield and other...
Tipo: Working or Discussion Paper Palavras-chave: Climate change; Hydrological modeling; RCM; SWAT; Uncertainty analysis; Upper Mississippi River Basin; Environmental Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/18403
Imagem não selecionada

Imprime registro no formato completo
The Soil and Water Assessment Tool: Historical Development, Applications, and Future Research Directions AgEcon
Gassman, Philip W.; Reyes, Manuel R.; Green, Colleen H.; Arnold, Jeffrey G..
The Soil and Water Assessment Tool (SWAT) model is a continuation of nearly 30 years of modeling efforts conducted by the U.S. Department of Agriculture (USDA), Agricultural Research Service. SWAT has gained international acceptance as a robust interdisciplinary watershed modeling tool, as evidenced by international SWAT conferences, hundreds of SWAT-related papers presented at numerous scientific meetings, and dozens of articles published in peer-reviewed journals. The model has also been adopted as part of the U.S. Environmental Protection Agency's BASINS (Better Assessment Science Integrating Point & Nonpoint Sources) software package and is being used by many U.S. federal and state agencies, including the USDA within the Conservation Effects...
Tipo: Working or Discussion Paper Palavras-chave: Developmental history; Flow analysis; Modeling; SWAT; Water quality; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/10285
Imagem não selecionada

Imprime registro no formato completo
Using Carbon Offsets to Fund Agricultural Conservation Practices in a Working-Lands Setting AgEcon
Reeling, Carson J.; Gramig, Benjamin M..
The nitrogen cascade concept indicates that agriculture serves as a significant link between emissions of the potent greenhouse gas (GHG) nitrous oxide and losses of nitrate-N to surface waters. Conservation practices have the potential to exploit this link, as their implementation is found to reduce fluxes of GHGs and nonpoint source (NPS) water pollution. Several studies have recognized this link and have documented the potential to improve environmental quality through the use of programs which retire land, the cost of which can be offset by the sale of carbon credits. However, the ability to use land for both agricultural production and environmental conservation is important. As such, this study provides a novel analytical framework that is used...
Tipo: Conference Paper or Presentation Palavras-chave: Greenhouse gases; Nonpoint source pollution; Agricultural conservation practices; DAYCENT; SWAT; Genetic algorithm; Environmental Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/103577
Registros recuperados: 23
Primeira ... 12 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional