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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
23/11/2004 |
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Data da última atualização: |
14/05/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SINCLAIR, T. R.; FARIAS, J. R.; NEUMAIER, N.; NEPOMUCENO, A. L. |
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Afiliação: |
UNIVERSITY OF FLORIDA; JOSE RENATO BOUCAS FARIAS, CNPSO; NORMAN NEUMAIER, CNPSO; ALEXANDRE LIMA NEPOMUCENO, CNPSO. |
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Título: |
Modeling nitrogen accumulation and use by soybean. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Field Crops Research, Amsterdam, v. 81, n. 2/3, p. 149-158, Feb. 2003. |
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Idioma: |
Inglês |
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Conteúdo: |
Simulation of soybean growth and yield requires an accurate representation of nitrogen accumulation and distribution in the developing crop. Approaches to simulate nitrogen accumulation by soybean have been complicated by the need to account for both soil nitrate uptake and symbiotic nitrogen fixation. Past approaches to simulating soybean have generally been empirical requiring ?calibration? for each new environment. Recently, Jamieson and Semonov [Field Crops Res. 68 (2000) 21] proposed a relatively simple approach for simulating nitrogen accumulation by wheat based on the nitrogen demand imposed separately by the development of leaf area and the growth of stems. This paper assesses this approach for soybean. This approach was further simplified by assuming that nitrogen availability to the plant was limited only by soil moisture conditions and a maximum uptake rate and that it was not necessary to distinguish between nitrate uptake and symbiotic nitrogen fixation. The simplified model generally resulted in simulations that corresponded to experimental observations on nitrogen and mass accumulation through the growing season, and on yield over a number of years. Sensitivity analysis of the model indicated that storage of nitrogen in the stem might be a key trait in increasing soybean yield potential. |
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Thesagro: |
Fixação de Nitrogênio; Soja. |
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Thesaurus Nal: |
Nitrogen fixation; Soybeans. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01906naa a2200205 a 4500
001 1469046
005 2025-05-14
008 2003 bl uuuu u00u1 u #d
100 1 $aSINCLAIR, T. R.
245 $aModeling nitrogen accumulation and use by soybean.$h[electronic resource]
260 $c2003
520 $aSimulation of soybean growth and yield requires an accurate representation of nitrogen accumulation and distribution in the developing crop. Approaches to simulate nitrogen accumulation by soybean have been complicated by the need to account for both soil nitrate uptake and symbiotic nitrogen fixation. Past approaches to simulating soybean have generally been empirical requiring ?calibration? for each new environment. Recently, Jamieson and Semonov [Field Crops Res. 68 (2000) 21] proposed a relatively simple approach for simulating nitrogen accumulation by wheat based on the nitrogen demand imposed separately by the development of leaf area and the growth of stems. This paper assesses this approach for soybean. This approach was further simplified by assuming that nitrogen availability to the plant was limited only by soil moisture conditions and a maximum uptake rate and that it was not necessary to distinguish between nitrate uptake and symbiotic nitrogen fixation. The simplified model generally resulted in simulations that corresponded to experimental observations on nitrogen and mass accumulation through the growing season, and on yield over a number of years. Sensitivity analysis of the model indicated that storage of nitrogen in the stem might be a key trait in increasing soybean yield potential.
650 $aNitrogen fixation
650 $aSoybeans
650 $aFixação de Nitrogênio
650 $aSoja
700 1 $aFARIAS, J. R.
700 1 $aNEUMAIER, N.
700 1 $aNEPOMUCENO, A. L.
773 $tField Crops Research, Amsterdam$gv. 81, n. 2/3, p. 149-158, Feb. 2003.
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Embrapa Soja (CNPSO) |
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| Registros recuperados : 2 | |
| 1. |  | OLIVEIRA, R. de S.; OLIVEIRA, S. C. de A.; SILVA, S. P. G. da; VIEIRA, I. M. S.; MOTA, M. G. da C.; LEMOS, O. F. de. Produção de plântulas "in vitro"a partir de embriões zigóticos de urucu (Bixa orellana L.) em diferentes concentrações de carvão ativado. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA (AVALIAÇÃO 1997-1998), 8., 1998, Belém, PA. Resumos. Belém, PA: FCAP-Unidade de Apoio à Pesquisa e Pós-Graduação, 1998. p. 167.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 2. | | OLIVEIRA, S. C. de A.; OLIVEIRA, R. de S.; SILVA, S. P. G. da; VIEIRA, I. M. S.; MOTA, M. G. da C.; LEMOS, O. F. de. Produção de plântulas in vitro de urucu (Bixa orellana L.) a partir de embriões zigóticos utilizando diferentes concentrações de GA3. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA (AVALIAÇÃO 1997-1998), 8., 1998, Belém, PA. Resumos. Belém, PA: FCAP-Unidade de Apoio à Pesquisa e Pós-Graduação, 1998. p. 137.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 2 | |
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