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| 135. |  | PREZOTTI, L. C.; BALBINO, J. M. de S.; FONSECA, E. E. M. da; FERREIRA, L. R. Influencia do esterco de cama de galinha, superfosfato triplo e calcario na producao e na incidencia de podridao apical em tomateiro cv. Kada. Horticultura Brasileira, Brasilia, v.7, n.2, p.15-17, nov. 1989.| Biblioteca(s): Embrapa Hortaliças. |
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| 136. | | MIRANDA, M. M. M.; PICANÇO, M. C.; ZANUNCIO; J. C.; BACCI, L.; SILVA, E. M. da. Impact of integrated pest management on the population of leafminers, fruit borers, and natural enemies in tomato. Ciência Rural, Santa Maria, v. 35, n.1, p. 204-208, jan./fev. 2005.| Biblioteca(s): Embrapa Hortaliças. |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
|
Data corrente: |
13/11/2006 |
|
Data da última atualização: |
23/10/2009 |
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Autoria: |
RODRIGUES, L. N.; AZEVEDO, J. A. de; SOCCOL, O. J.; SILVA, E. M. da. |
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Título: |
Modelo de Ritchie: descrição e aplicação. |
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Ano de publicação: |
2005 |
|
Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2005. |
|
Páginas: |
29 p. |
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Série: |
(Embrapa Cerrados. Documentos, 133). |
|
Idioma: |
Português |
|
Conteúdo: |
ABSTRACT: Among the several methods used to manage irrigation, the ones based on the calculation of crop water consumption or evapotranspiration are the most common. From those, the one presented by Doorenbos e Pruitt (1977) is the most used. Based on this method, the crop evapotranspiration is calculated multiplying a crop reference evapotranspiration by a crop coefficient. Applying this methodology in some situations is not convenient, for instance, in the estimative of crop water use efficiency. Besides of this, a good estimative of crop coefficient is difficult and should be done for each region, once is site specific. Options to this method are the models that calculate the evaporation and transpiration separately. Among those, the one presented by Ritchie (1972) is the most popular. It was developed to calculate row crop evapotranspiration in situations where neither soil water deficit occur nor crop is in senescence stage. This model has been used successfully to estimate crop evapotranspiration under different climatic, soil and crop conditions. To use this model it is necessary to estimate two soil parameters. Even though the methodology to estimate these two parameters is of easy application. It is not widely known. The objectives of this paper were: i) to describe the Ritchie model and apply it to calculate the evapotranspiration of Cerrados' crop; and ii) to present methodologies to estimate both its soil parameter and the crop leaf are index. |
|
Palavras-Chave: |
Coeficiente de cultura; Uso da água. |
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Thesagro: |
Evapotranspiração; Irrigação; Manejo; Manejo de Água. |
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Thesaurus NAL: |
crop coefficient; evapotranspiration; irrigation; water management. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/27306/1/doc_133.pdf
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Marc: |
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100 1 $aRODRIGUES, L. N.
245 $aModelo de Ritchie$bdescrição e aplicação.
260 $aPlanaltina, DF: Embrapa Cerrados$c2005
300 $a29 p.
490 $a(Embrapa Cerrados. Documentos, 133).
520 $aABSTRACT: Among the several methods used to manage irrigation, the ones based on the calculation of crop water consumption or evapotranspiration are the most common. From those, the one presented by Doorenbos e Pruitt (1977) is the most used. Based on this method, the crop evapotranspiration is calculated multiplying a crop reference evapotranspiration by a crop coefficient. Applying this methodology in some situations is not convenient, for instance, in the estimative of crop water use efficiency. Besides of this, a good estimative of crop coefficient is difficult and should be done for each region, once is site specific. Options to this method are the models that calculate the evaporation and transpiration separately. Among those, the one presented by Ritchie (1972) is the most popular. It was developed to calculate row crop evapotranspiration in situations where neither soil water deficit occur nor crop is in senescence stage. This model has been used successfully to estimate crop evapotranspiration under different climatic, soil and crop conditions. To use this model it is necessary to estimate two soil parameters. Even though the methodology to estimate these two parameters is of easy application. It is not widely known. The objectives of this paper were: i) to describe the Ritchie model and apply it to calculate the evapotranspiration of Cerrados' crop; and ii) to present methodologies to estimate both its soil parameter and the crop leaf are index.
650 $acrop coefficient
650 $aevapotranspiration
650 $airrigation
650 $awater management
650 $aEvapotranspiração
650 $aIrrigação
650 $aManejo
650 $aManejo de Água
653 $aCoeficiente de cultura
653 $aUso da água
700 1 $aAZEVEDO, J. A. de
700 1 $aSOCCOL, O. J.
700 1 $aSILVA, E. M. da
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Embrapa Cerrados (CPAC) |
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