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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
22/04/2014 |
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Data da última atualização: |
09/11/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LUCA, M. J. de; HUNGRIA, M. |
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Afiliação: |
MARCOS JAVIER DE LUCA, INTA; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Plant densities and modulation of symbiotic nitrogen fixation in soybean. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 71, n. 3, p. 181-187, May/June 2014. |
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ISSN: |
0103-9016 |
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DOI: |
http://dx.doi.org/10.1590/S0103-90162014000300002 |
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Idioma: |
Inglês |
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Conteúdo: |
Soybean nitrogen (N) demands can be supplied to a large extent via biological nitrogen fixation, but the mechanisms of source/sink regulating photosynthesis/nitrogen fixation in high yielding cultivars and current crop management arrangements need to be investigated. We investigated the modulation of symbiotic nitrogen fixation in soybean [Glycine max (L.) Merrill] at different plant densities. A field trial was performed in southern Brazil with six treatments, including non-inoculated controls without and with N-fertilizer, both at a density of 320,000 plants ha−1, and plants inoculated with Bradyrhizobium elkanii at four densities, ranging from 40,000 to 320,000 plants ha−1. Differences in nodulation, biomass production, N accumulation and partition were observed at stage R5, but not at stage V4, indicating that quantitative and qualitative factors (such as sunlight infrared/red ratio) assume increasing importance during the later stages of plant growth. Decreases in density in the inoculated treatments stimulated photosynthesis and nitrogen fixation per plant. Similar yields were obtained at the different plant densities, with decreases only at the very low density level of 40,000 plants ha−1, which was also the only treatment to show differences in seed protein and oil contents. Results confirm a fine tuning of the mechanisms of source/sink, photosynthesis/nitrogen fixation under lower plant densities. Higher photosynthesis and nitrogen fixation rates are capable of sustaining increased plant growth. MenosSoybean nitrogen (N) demands can be supplied to a large extent via biological nitrogen fixation, but the mechanisms of source/sink regulating photosynthesis/nitrogen fixation in high yielding cultivars and current crop management arrangements need to be investigated. We investigated the modulation of symbiotic nitrogen fixation in soybean [Glycine max (L.) Merrill] at different plant densities. A field trial was performed in southern Brazil with six treatments, including non-inoculated controls without and with N-fertilizer, both at a density of 320,000 plants ha−1, and plants inoculated with Bradyrhizobium elkanii at four densities, ranging from 40,000 to 320,000 plants ha−1. Differences in nodulation, biomass production, N accumulation and partition were observed at stage R5, but not at stage V4, indicating that quantitative and qualitative factors (such as sunlight infrared/red ratio) assume increasing importance during the later stages of plant growth. Decreases in density in the inoculated treatments stimulated photosynthesis and nitrogen fixation per plant. Similar yields were obtained at the different plant densities, with decreases only at the very low density level of 40,000 plants ha−1, which was also the only treatment to show differences in seed protein and oil contents. Results confirm a fine tuning of the mechanisms of source/sink, photosynthesis/nitrogen fixation under lower plant densities. Higher photosynthesis and nitrogen fixation rates a... Mostrar Tudo |
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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: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/104204/1/Plant-densities-and-modulation-of-symbiotic-nitrogen-fixation-in-soybean.pdf
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Marc: |
LEADER 02161naa a2200205 a 4500
001 1984914
005 2015-11-09
008 2014 bl uuuu u00u1 u #d
022 $a0103-9016
024 7 $ahttp://dx.doi.org/10.1590/S0103-90162014000300002$2DOI
100 1 $aLUCA, M. J. de
245 $aPlant densities and modulation of symbiotic nitrogen fixation in soybean.
260 $c2014
520 $aSoybean nitrogen (N) demands can be supplied to a large extent via biological nitrogen fixation, but the mechanisms of source/sink regulating photosynthesis/nitrogen fixation in high yielding cultivars and current crop management arrangements need to be investigated. We investigated the modulation of symbiotic nitrogen fixation in soybean [Glycine max (L.) Merrill] at different plant densities. A field trial was performed in southern Brazil with six treatments, including non-inoculated controls without and with N-fertilizer, both at a density of 320,000 plants ha−1, and plants inoculated with Bradyrhizobium elkanii at four densities, ranging from 40,000 to 320,000 plants ha−1. Differences in nodulation, biomass production, N accumulation and partition were observed at stage R5, but not at stage V4, indicating that quantitative and qualitative factors (such as sunlight infrared/red ratio) assume increasing importance during the later stages of plant growth. Decreases in density in the inoculated treatments stimulated photosynthesis and nitrogen fixation per plant. Similar yields were obtained at the different plant densities, with decreases only at the very low density level of 40,000 plants ha−1, which was also the only treatment to show differences in seed protein and oil contents. Results confirm a fine tuning of the mechanisms of source/sink, photosynthesis/nitrogen fixation under lower plant densities. Higher photosynthesis and nitrogen fixation rates are capable of sustaining increased plant growth.
650 $aNitrogen fixation
650 $aSoybeans
650 $aFixação de nitrogênio
650 $aSoja
700 1 $aHUNGRIA, M.
773 $tScientia Agricola, Piracicaba$gv. 71, n. 3, p. 181-187, May/June 2014.
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Registro original: |
Embrapa Soja (CNPSO) |
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| Registros recuperados : 48 | |
| 12. |  | GOMES, G. M. F.; BOMFIM, M. A. D.; SANTOS, S. F. dos; SILVA, I. C. S.; SANTOS, V. O. Análise exploratória do farelo de gérmen de milho utilizando espectroscopia NIRS. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CAPRINOS E OVINOS, 8., 2019, Sobral. Anais... Sobral: Embrapa Caprinos e Ovinos, 2019. p. 20-21. (Embrapa Caprinos e Ovinos. Documentos, 126).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 16. | | MARTINS, D. C.; BOMFIM, M. A. D.; FACO, O.; OLIVEIRA, L. S.; SANTOS, S. F. dos; MARTINS, F. E. B. Predição da massa corporal em pequenos ruminantes por meio de medidas morfométricas. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CAPRINOS E OVINOS, 2., 2013, Sobral. Resumos... Sobral: Embrapa Caprinos e Ovinos, 2013. p. 30-31. (Embrapa Caprinos e Ovinos. Documentos, 109).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 17. | | FONTELES, N. L. de O.; BOMFIM, M. A. D.; GALVANI, D. B.; OLIVEIRA, L. S.; SANTOS, S. F. dos; SOUSA, R. T. de. Balanço de nitrogênio de cabras alimentadas com pedúnculo de caju e níveis crescentes de óleo de soja. In: CONGRESSO NORDESTINO DE PRODUÇÃO ANIMAL, 8., 2013, Fortaleza. [Anais...]. [Sobral: Universidade Estadual Vale do Acaraú; Embrapa Caprinos e Ovinos, 2013]. 4 f.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 18. | | MAGALHÃES, Y. A.; MARTINS, F. E. B.; BOMFIM, M. A. D.; MACHADO, H. C.; SANTOS, S. F. dos; GALVANI, D. B.; COSTA, B. M.; SILVA, B. K. G. Avaliação do desempenho de modelos para a previsão da digestibilidade de dieta de caprinos em pasto nativo usando a espectroscopia NIR. Arquivos Latinoamericanos de Produção Animal, v. 24, supl. 1, p. 422-423, 2016. Resumo 93-2. Edición de las Memorias de la 25a. Reunión de la Asociación Latinoamericana de Producción Animal (ALPA), 2016, Recife, Brasil.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 19. | | MARTINS, F. E. B.; BOMFIM, M. A. D.; FERNANDES, A. M. F.; MACHADO, H. C.; SANTOS, S. F. dos; GALVANI, D. B. Avaliação do desempenho de modelos para previsão da proteína bruta e da digestibilidade da vagem da algaroba usando espectroscopia NIR. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CAPRINOS E OVINOS, 4., 2015, Sobral. Anais... Sobral: Embrapa Caprinos e Ovinos, 2015. p. 20-21.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 20. | | MARTINS, F. E. B.; BOMFIM, M. A. D.; SILVA, B. K. G.; SOARES, J. P. G.; GONÇALVES, J. de L.; SANTOS, S. F. dos. Avaliação da preparação da amostra e da instrumentação NIR no desempenho de modelos para previsão do teor de proteína bruta da dieta de caprinos em pasto nativo. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CAPRINOS E OVINOS, 5., 2016, Sobral. Anais... Sobral: Embrapa Caprinos e Ovinos, 2016. p. 12-13.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| Registros recuperados : 48 | |
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