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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: |
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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 : 7 | |
| 2. |  | LUCA, M. J. de; HUNGRIA, M. Efeito da densidade de plantio em soja na nodulação, concentração de nutrientes e rendimento. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 30.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 14.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 12.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 9.; SIMPÓSIO SOBRE SELÊNIO NO BRASIL, 1., 2012, Maceió. A responsabilidade socioambiental da pesquisa agrícola: anais. Viçosa: SBCS, 2012. 4 p. Trab. 1124. 1 CD-ROM. Fertbio.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 3. | | LUCA, M. J. de; NOGUEIRA, M. A.; HUNGRIA, M. Pode Bradyrhizobium japonicum, em combinação com diferentes densidades de plantio de soja alterar componentes do rendimento? In: IBEROAMERICAN CONFERENCE ON BENEFICIAL PLANT - MICROORGANISM - ENVIRONMENT INTERACTIONS, 2.; NATIONAL MEETING OF THE SPANISH SOCIETY OF NITROGEN FIXATION, 14.; LATIN AMERICAN MEETING ON RHIZOBIOLOGY, 26.; SPANISH-PROTUGUESE CONGRESS ON NITROGEN FIXATION, 3., 2013, Sevilla. Microorganisms for future agriculture. Sevilla: Universidad de Sevilla; ALAR; SEFIN, 2013. p. 216-217.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 5. | | KASCHUK, G.; NOGUEIRA, M. A.; LUCA, M. J. de; HUNGRIA, M. Responses of soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium. In: REUNIÃO LATINOAMERICANA DE RIZOBIOLOGIA - RELAR, 27., 2016, Londrina. Fortalecendo as parcerias Sul-Sul: anais. Curitiba: SBCS-NEPAR, 2016. p. 269. Editores: Mariangela Hungria, Douglas Fabiano Gomes, Arnaldo Colozzi Filho.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 6. | | HUNGRIA, M.; NOGUEIRA, M. A.; LUCA, M. J. de; ZILLI, J. E. Novas tecnologias na cultura da soja: métodos de inoculação, densidades de plantas e novas estirpes de Bradyrhizobium. In: REUNIÃO DA REDE DE LABORATÓRIOS PARA A RECOMENDAÇÃO, PADRONIZAÇÃO E DIFUSÃO DE TECNOLOGIAS DE INOCULANTES MICROBIANOS DE INTERESSE AGRÍCOLA, 17., 2014, Londrina. Anais... Londrina: Embrapa Soja, 2016. p. 57-58 (Embrapa Soja. Documentos, 369). RELARE 2014.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 7. | | SILVA, A. P. da; BABUJIA, L.; DALL'AGNOL, R. F.; MATSUMOTO, L. S.; LUCA, M. J. de; NOGUEIRA, M. A.; HUNGRIA, M. Atividades enzimáticas como indicadores de qualidade do solo. In: CONGRESSO BRASILEIRO DE MICROBILOGIA, 26.; SIMPÓSIO INTERNACIONAL DE BACTÉRIAS LÁTICAS; ENCONTRO NACIONAL DE PROFESSORES DE MICROBIOLOGIA; SIMPÓSIO DE COLEÇÕES DE CULTURAS, 4., 2011, Foz do Iguaçu. Anais... São Paulo: SBM, 2011. Resumo, 1000-1.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 7 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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