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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Mandioca e Fruticultura. |
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Data corrente: |
07/01/1997 |
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Data da última atualização: |
01/06/1999 |
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Autoria: |
COELHO, E. F. |
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Afiliação: |
EMBRAPA-CNPMF. |
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Título: |
Soil water dynamics under drip irrigation with applications to sensor placement |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Logan, Utah, 1996 |
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Páginas: |
170p. |
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Série: |
Tese Doutorado |
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Idioma: |
Inglês |
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Conteúdo: |
Advances in drip irrigation management rely on knowledge of the soil water distribution and dynamics within the wetted soil volume. Information on the integrated effects of water flow from a dripper with extraction by plant roots is essential for proper irrigation management. Available numerical and analytical frameworks have been used for obtaining this information, however the lack of information on plant uptake patterns and intensity limits their practicability. The objectives of this study were to develop a framework for describing a realistic picture of soil water dynamics within the wetted volume by considering transient water flow and root extraction patterns simultaneously and to apply the information to drip irrigation management, and in particular,to sensor -based schemes. Bivariate gaussian distribution density functions (semi-lognormal, normal and lognormal) were proposed as parametric models for describing two-dimensional water uptake intensity patterns under different plant-dripper configurations. The proposed parametric models agreed well with actual measured uptake intensity distributions. An analytical framework for soil water dynamics predictions was selected due to its modest parameter requirement and direct link between inputsand outputs. Suitability of several analytical solutions for steady and transient flow from point sources were evaluated for drip irrigation management. The transient solutions provided a better description soil water dynamics in absence of plants..... MenosAdvances in drip irrigation management rely on knowledge of the soil water distribution and dynamics within the wetted soil volume. Information on the integrated effects of water flow from a dripper with extraction by plant roots is essential for proper irrigation management. Available numerical and analytical frameworks have been used for obtaining this information, however the lack of information on plant uptake patterns and intensity limits their practicability. The objectives of this study were to develop a framework for describing a realistic picture of soil water dynamics within the wetted volume by considering transient water flow and root extraction patterns simultaneously and to apply the information to drip irrigation management, and in particular,to sensor -based schemes. Bivariate gaussian distribution density functions (semi-lognormal, normal and lognormal) were proposed as parametric models for describing two-dimensional water uptake intensity patterns under different plant-dripper configurations. The proposed parametric models agreed well with actual measured uptake intensity distributions. An analytical framework for soil water dynamics predictions was selected due to its modest parameter requirement and direct link between inputsand outputs. Suitability of several analytical solutions for steady and transient flow from point sources were evaluated for drip irrigation management. The transient solutions provided a better description soil water dynamics in ab... Mostrar Tudo |
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Palavras-Chave: |
Metodo analitico; Sensor; Sensors; Trickle irrigation. |
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Thesagro: |
Água do Solo; Balanço Hídrico; Equipamento de Irrigação; Irrigação por Gotejamento; Simulação. |
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Thesaurus Nal: |
analytical methods; simulation models; soil water movement. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02270nam a2200277 a 4500
001 1651455
005 1999-06-01
008 1996 bl uuuu m 00u1 u #d
100 1 $aCOELHO, E. F.
245 $aSoil water dynamics under drip irrigation with applications to sensor placement
260 $aLogan, Utah$c1996
300 $a170p.
490 $aTese Doutorado
520 $aAdvances in drip irrigation management rely on knowledge of the soil water distribution and dynamics within the wetted soil volume. Information on the integrated effects of water flow from a dripper with extraction by plant roots is essential for proper irrigation management. Available numerical and analytical frameworks have been used for obtaining this information, however the lack of information on plant uptake patterns and intensity limits their practicability. The objectives of this study were to develop a framework for describing a realistic picture of soil water dynamics within the wetted volume by considering transient water flow and root extraction patterns simultaneously and to apply the information to drip irrigation management, and in particular,to sensor -based schemes. Bivariate gaussian distribution density functions (semi-lognormal, normal and lognormal) were proposed as parametric models for describing two-dimensional water uptake intensity patterns under different plant-dripper configurations. The proposed parametric models agreed well with actual measured uptake intensity distributions. An analytical framework for soil water dynamics predictions was selected due to its modest parameter requirement and direct link between inputsand outputs. Suitability of several analytical solutions for steady and transient flow from point sources were evaluated for drip irrigation management. The transient solutions provided a better description soil water dynamics in absence of plants.....
650 $aanalytical methods
650 $asimulation models
650 $asoil water movement
650 $aÁgua do Solo
650 $aBalanço Hídrico
650 $aEquipamento de Irrigação
650 $aIrrigação por Gotejamento
650 $aSimulação
653 $aMetodo analitico
653 $aSensor
653 $aSensors
653 $aTrickle irrigation
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
19/03/2008 |
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Data da última atualização: |
19/03/2008 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
CAMPOS, M. A.; SILVA, F. B.; SILVA, M. S.; ALBUQUERQUE, E. V. S.; AMARAL, A. M. do; TEIXEIRA, C. C.; MEHTA, A.; SÁ, M. F. G. |
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Afiliação: |
Magnólia A. Campos, UFLA; Flávia B. Silva; UFLA; Marília S. Silva, CPAC; Érika E. V. S. Albuquerque, Cenargen; Alexandre M. do Amaral, Cenargen; Cristiane C. Teixeira, Cenargen; Ângela Mehta, Cenargen; Maria Fátima G. Sá, Cenargen. |
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Título: |
Identification of the putative class 3 R genes in coffea arabica from CafEST database. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: SAGOT, M. -F.; WALTER, M. E. M. T. (Ed.). Advances in bioinformatics and computational biology. New York: Springer, 2007. p. 171-175 |
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Idioma: |
Inglês |
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Thesagro: |
Café; Variedade Resistente. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00705naa a2200217 a 4500
001 1547326
005 2008-03-19
008 2007 bl uuuu u00u1 u #d
100 1 $aCAMPOS, M. A.
245 $aIdentification of the putative class 3 R genes in coffea arabica from CafEST database.
260 $c2007
650 $aCafé
650 $aVariedade Resistente
700 1 $aSILVA, F. B.
700 1 $aSILVA, M. S.
700 1 $aALBUQUERQUE, E. V. S.
700 1 $aAMARAL, A. M. do
700 1 $aTEIXEIRA, C. C.
700 1 $aMEHTA, A.
700 1 $aSÁ, M. F. G.
773 $tIn: SAGOT, M. -F.; WALTER, M. E. M. T. (Ed.). Advances in bioinformatics and computational biology. New York: Springer, 2007. p. 171-175
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