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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
05/05/2009 |
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Data da última atualização: |
01/12/2010 |
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Autoria: |
STRECK, N. A.; BOSCO, L. C.; LAGO, I. |
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Afiliação: |
NEREU AUGUSTO STRECK, UFSM; LEOSANE CRISTINA BOSCO, UFSM; ISABEL LAGO, UFSM. |
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Título: |
Simulating leaf appearance in some Brazilian spring wheat genotypes. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Revista Brasileira de Agrometeorologia, Piracicaba, v. 15, n. 1, p. 95-102, 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
The calculation of leaf appearance rate (LAR) is an important part of many wheat simulation models. The strength of a crop simulation model is how well it works under a wide range of different environments and with different genotoypes. This study evaluates the performance of an existing model recently developed for winter wheat (the Streck LAR model) in simulating the main stem LAR and Haun Stage of some Brazilian spring wheat cultivars. The Streck LAR model is composed of three non-linear response functions combined in a multiplicative fashion, and model coefficients have biological meaning and operational definitions. The original and modified version of the Streck LAR model were used in this study. The modified version of the Streck LAR model consisted of adapting two coefficients for local cultivars. A field experiment was carried out at Santa Maria, RS, Brazil, which provided independent data for evaluating the two versionis of the Streck LAR model. Thirteen Brazilian wheat cultivars were sown on 05 July 2003, and the number of main stem leaves, represented by the Haun Stage, was measured weekly. The original version of the model overpredicted most of the Haun Stage data, with an overall (including data for all cultivars) root mean square error (RMSE) of 1.5 leaves. Simulations were greatly improved with the modified version of the model, decreasing the overall RMSE to 0.8 leaves. RMSE lower than one leaf was obtained with the Modified Streck LAR model for ten out of the thirteen spring wheat cultivars evaluated. MenosThe calculation of leaf appearance rate (LAR) is an important part of many wheat simulation models. The strength of a crop simulation model is how well it works under a wide range of different environments and with different genotoypes. This study evaluates the performance of an existing model recently developed for winter wheat (the Streck LAR model) in simulating the main stem LAR and Haun Stage of some Brazilian spring wheat cultivars. The Streck LAR model is composed of three non-linear response functions combined in a multiplicative fashion, and model coefficients have biological meaning and operational definitions. The original and modified version of the Streck LAR model were used in this study. The modified version of the Streck LAR model consisted of adapting two coefficients for local cultivars. A field experiment was carried out at Santa Maria, RS, Brazil, which provided independent data for evaluating the two versionis of the Streck LAR model. Thirteen Brazilian wheat cultivars were sown on 05 July 2003, and the number of main stem leaves, represented by the Haun Stage, was measured weekly. The original version of the model overpredicted most of the Haun Stage data, with an overall (including data for all cultivars) root mean square error (RMSE) of 1.5 leaves. Simulations were greatly improved with the modified version of the model, decreasing the overall RMSE to 0.8 leaves. RMSE lower than one leaf was obtained with the Modified Streck LAR model for ten out of t... Mostrar Tudo |
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Palavras-Chave: |
Genótipos de trigo de primavera; Modelo; Número de folhas; Simulação do aparecimento de folhas; Simulation; Temperatura do ar. |
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Thesagro: |
Triticum Aestivum. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02226naa a2200229 a 4500
001 1048828
005 2010-12-01
008 2007 bl uuuu u00u1 u #d
100 1 $aSTRECK, N. A.
245 $aSimulating leaf appearance in some Brazilian spring wheat genotypes.
260 $c2007
520 $aThe calculation of leaf appearance rate (LAR) is an important part of many wheat simulation models. The strength of a crop simulation model is how well it works under a wide range of different environments and with different genotoypes. This study evaluates the performance of an existing model recently developed for winter wheat (the Streck LAR model) in simulating the main stem LAR and Haun Stage of some Brazilian spring wheat cultivars. The Streck LAR model is composed of three non-linear response functions combined in a multiplicative fashion, and model coefficients have biological meaning and operational definitions. The original and modified version of the Streck LAR model were used in this study. The modified version of the Streck LAR model consisted of adapting two coefficients for local cultivars. A field experiment was carried out at Santa Maria, RS, Brazil, which provided independent data for evaluating the two versionis of the Streck LAR model. Thirteen Brazilian wheat cultivars were sown on 05 July 2003, and the number of main stem leaves, represented by the Haun Stage, was measured weekly. The original version of the model overpredicted most of the Haun Stage data, with an overall (including data for all cultivars) root mean square error (RMSE) of 1.5 leaves. Simulations were greatly improved with the modified version of the model, decreasing the overall RMSE to 0.8 leaves. RMSE lower than one leaf was obtained with the Modified Streck LAR model for ten out of the thirteen spring wheat cultivars evaluated.
650 $aTriticum Aestivum
653 $aGenótipos de trigo de primavera
653 $aModelo
653 $aNúmero de folhas
653 $aSimulação do aparecimento de folhas
653 $aSimulation
653 $aTemperatura do ar
700 1 $aBOSCO, L. C.
700 1 $aLAGO, I.
773 $tRevista Brasileira de Agrometeorologia, Piracicaba$gv. 15, n. 1, p. 95-102, 2007.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Biblioteca |
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Registro |
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| Registros recuperados : 12 | |
| 1. |  | CARDOSO, L. S.; BERGAMASCHI, H.; BOSCO, L. C.; PAULA, V. A. de; NACHTIGALL, G. R. Unidades de frio para macieiras na região de Vacaria - RS, Brasil. Revista Brasileira de Fruticultura, v. 37, n. 2, p. 289-295, jun. 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Uva e Vinho. |
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| 2. | | STRECK, N. A.; BOSCO, L. C.; LUCAS, D. D. P.; LAGO, I. Modelagem da emissão de folhas em arroz cultivado e em arroz-vermelho. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 5, p. 559-567, maio 2008 Título em inglês: Modeling leaf appearance in cultivated rice and red rice.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 6. | | GRIMM, E. L.; HELDWEIN, A. B.; RADONS, S. Z.; MALDANER, I. C.; TRENTIN, G.; BOSCO, L. C. Produtividade da batata em função da irrigação e do controle químico da requeima. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 15, n. 2, p. 125-130, fev. 2011| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 7. | | HELDWEIN, A. B.; MALDANER, I. C.; BOSCO, L. C.; TRENTIN, G.; GRIMM, E. L.; RADONS, S. Z.; LUCAS, D. D. P. Saldo de radiação diurno em dosséis de batata como função da radiação solar global. Revista Ciência Agronômica, Fortaleza, v. 43, n. 1, p. 96-104, jan./mar. 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 8. | | CARDOSO, L. S.; BERGAMASCHI, H.; BOSCO, L. C.; PAULA, V. A. de; MARODIN, G. A. B.; CASAMALI, B.; NACHTIGALL, G. R. Disponibilidades climáticas para macieira na região de Vacaria, RS. Ciência Rural, Santa Maria, v. 42, n. 11, p. 1960-1967, nov. 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Uva e Vinho. |
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| 9. | | CARDOSO, L. S.; BERGAMASCHI, H.; BOSCO, L. C.; DE PAULA, V. A.; BRAUNER, P. C.; CASAMIALI, B.; MARODIN, G. A. B.; NACHTIGALL, G. R. Necessidades e disponibilidades climáticas para macieira na região de Vacaria, Brasil. In: REUNIÓN ARGENTINA, 13.; LATINOAMERICANA DE AGROMETEOROLOGÍA, 6., 2010, Bahía Blanca, Argentina. Agrometeorología sin fronteiras en el año internacional del acercamiento de las culturas: actas. Bahía Blanca: Asociación Argentina de Agrometeorología, 2010. Não paginado. RALDA 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Uva e Vinho. |
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| 10. | | PAULA, V. A. de; NACHTIGALL, G. R.; BERGAMASCHI, H.; DEL PONTE, E. M.; CARDOSO, L. S.; BOSCO, L. C.; MARODIN, G. A. B.; VALDEBENITO-SANHUEZA, R. M. Molhamento foliar e sazonalidade de epidemias de sarna da macieira em Vacaria, RS. Bento Gonçalves: Embrapa Uva e Vinho, 2013. 8 p. (Embrapa Uva e Vinho. Comunicado Técnico, 146).| Tipo: Comunicado Técnico/Recomendações Técnicas |
| Biblioteca(s): Embrapa Uva e Vinho. |
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| 11. | | BOSCO, L. C.; CARDOSO, L. S.; PAULA, V. A. de; BERGAMASCHI, H.; MARODIN, F. A.; DELAZERI, M.; BRAUNER, P. C.; CASAMALI, B.; MARODIN, G. A. B.; SANTOS, H. P. dos. Radiação fotossinteticamente ativa em dosséis de macieira sob tela antigranizo e em céu aberto. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 17., 2011, Guarapari. Riscos climáticos e cenários agrícolas futuros: anais. Guarapari: Incaper, 2011. Não paginado. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Uva e Vinho. |
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| 12. | | BOSCO, L. C.; CARDOSO, L. S.; PAULA, V. A. de; BERGAMASCHI, H.; MARODIN, F. A.; BRAUNER, P. C.; SANTOS, V. R. dos; MARODIN, G. A. B.; SANTOS, H. P. dos. Radiação solar, produção e qualidade de frutos em pomares de macieiras sob tela antigranizo e em céu aberto. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 16., 2009, BElo Horizonte. Mudanças climáticas, recursos hídricos e energia para uma agricultura sustentável: resumos. Belo Horizonte: SBA: UFV: Embrapa Milho e Sorgo, 2009. p. 122. Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Uva e Vinho. |
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| Registros recuperados : 12 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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