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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: |
23/11/2004 |
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Autoria: |
SINCLAIR, T. R.; FARIAS, J. R.; NEUMAIER, N.; NEPOMUCENO, A. L. |
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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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Categoria do assunto: |
-- |
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URL: |
https://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6T6M-47K2VJV-6-P&_cdi=5034&_orig=browse&_coverDate=02%2F20%2F2003&_sk=999189997&view=c&wchp=dGLbVtb-zSkWz&_acct=C000012878&_version=1&_userid=2497794&md5=836f9c697bd84de15df5afacfc59a996&ie=f.pdf
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Marc: |
LEADER 01762naa a2200157 a 4500
001 1469046
005 2004-11-23
008 2003 bl --- 0-- u #d
100 1 $aSINCLAIR, T. R.
245 $aModeling nitrogen accumulation and use by soybean.
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.
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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Registro original: |
Embrapa Soja (CNPSO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Trigo. Para informações adicionais entre em contato com cnpt.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
22/08/1994 |
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Data da última atualização: |
22/08/1994 |
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Autoria: |
BAIER, A. C.; CAUMO, A. |
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Título: |
Ensaios de rendimento de linhagens de triticale no CNPTrigo em 1977. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
In: EMBRAPA. Centro Nacional de Pesquisa de Trigo. Melhoramento de trigo, sementes, triticale e cevada. Passo Fundo, 1978. |
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Volume: |
v. 1 |
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Páginas: |
p. 191-201 |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado na X Reunião Anual Conjunta de Pesquisa de Trigo, Porto Alegre, 1978. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00586naa a2200157 a 4500
001 1821832
005 1994-08-22
008 1978 bl uuuu u00u1 u #d
100 1 $aBAIER, A. C.
245 $aEnsaios de rendimento de linhagens de triticale no CNPTrigo em 1977.
260 $c1978
300 $ap. 191-201 v. 1
490 $vv. 1
500 $aTrabalho apresentado na X Reunião Anual Conjunta de Pesquisa de Trigo, Porto Alegre, 1978.
700 1 $aCAUMO, A.
773 $tIn: EMBRAPA. Centro Nacional de Pesquisa de Trigo. Melhoramento de trigo, sementes, triticale e cevada. Passo Fundo, 1978.
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