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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
14/05/2020 |
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Data da última atualização: |
14/05/2020 |
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Autoria: |
AGUIRRE, P. F.; GIACOMINI, S. J.; OLIVO, C. J.; BRATZ, V. F.; QUATRIN, M. P.; SCHAEFER, G. L. |
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Afiliação: |
Priscila Flôres Aguirre, Universidade Federal de Santa Maria - UFSM/Departamento de Zootecnia; Sandro José Giacomini, Universidade Federal de Santa Maria - UFSM/Departamento de Solos; Clair Jorge Olivo, Universidade Federal de Santa Maria - UFSM/Departamento de Zootecnia; Vinicius Felipe Bratz, Universidade Federal de Santa Maria - UFSM/Departamento de Zootecnia; Maurício Pase Quatrin, Universidade Federal de Santa Maria - UFSM/Departamento de Zootecnia; Gilmar Luiz Schaefer, Universidade Federal de Santa Maria - UFSM/Departamento de Solos. |
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Título: |
Biological nitrogen fixation and urea-N recovery in 'Coastcross-1' pasture treated with Azospirillum brasilense. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, v. 55, e01242, 2020. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Fixação biológica de nitrogênio e recuperação de N-ureia em pastagem de 'Coastcross-1' tratada com Azospirillum brasilense. |
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Conteúdo: |
The objective of this work was to quantify the inoculation effect of Azospirillum brasilense (Ab-V5 and Ab-V6 strains) on the forage yield, biological nitrogen fixation (BNF), and urea-15N recovery of the forage grass 'Coastcross-1'. The experiment was carried out in a 2 (with or without inoculation) × 2 (without N fertilizer and with 100 kg ha-1 N per year as urea) × 7 (cuts) factorial arrangement. The natural 15N abundance method was used to determine BNF; to determine urea-N recovery, 15N-labeled urea was applied in microplots. Forage yield was higher in grasses subjected to inoculation, with 7.4 Mg ha-1 dry matter per year, for the treatment without N fertilizer, and 8.0 Mg ha-1 dry matter per year for the treatment with 100 kg ha-1 N per year, respectively, which shows an additive effect of inoculation and N fertilization. The contribution of BNF was 23.0 and 53.8 kg ha-1 per year for the unfertilized treatment, both in uninoculated and inoculated plants, respectively. Urea-15N recovery was 13.7 and 16.5 kg ha-1 per year for uninoculated and inoculated treatments, respectively, corresponding to 13.7 and 16.5% of the urea-N applied. Inoculation with A. brasilense increases forage yield and the contribution of BNF to grass nutrition with N, as well as urea-N recovery by the forage grass. |
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Palavras-Chave: |
Abundância natural de 15N; Natural abundance of 15N; Produção de forragem. |
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Thesagro: |
Cynodon Dactylon. |
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Thesaurus Nal: |
Forage yield. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/213018/1/Biological-nitrogen-fixation-and-urea-N.pdf
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Marc: |
LEADER 02236naa a2200253 a 4500
001 2122327
005 2020-05-14
008 2020 bl uuuu u00u1 u #d
100 1 $aAGUIRRE, P. F.
245 $aBiological nitrogen fixation and urea-N recovery in 'Coastcross-1' pasture treated with Azospirillum brasilense.$h[electronic resource]
260 $c2020
500 $aTítulo em português: Fixação biológica de nitrogênio e recuperação de N-ureia em pastagem de 'Coastcross-1' tratada com Azospirillum brasilense.
520 $aThe objective of this work was to quantify the inoculation effect of Azospirillum brasilense (Ab-V5 and Ab-V6 strains) on the forage yield, biological nitrogen fixation (BNF), and urea-15N recovery of the forage grass 'Coastcross-1'. The experiment was carried out in a 2 (with or without inoculation) × 2 (without N fertilizer and with 100 kg ha-1 N per year as urea) × 7 (cuts) factorial arrangement. The natural 15N abundance method was used to determine BNF; to determine urea-N recovery, 15N-labeled urea was applied in microplots. Forage yield was higher in grasses subjected to inoculation, with 7.4 Mg ha-1 dry matter per year, for the treatment without N fertilizer, and 8.0 Mg ha-1 dry matter per year for the treatment with 100 kg ha-1 N per year, respectively, which shows an additive effect of inoculation and N fertilization. The contribution of BNF was 23.0 and 53.8 kg ha-1 per year for the unfertilized treatment, both in uninoculated and inoculated plants, respectively. Urea-15N recovery was 13.7 and 16.5 kg ha-1 per year for uninoculated and inoculated treatments, respectively, corresponding to 13.7 and 16.5% of the urea-N applied. Inoculation with A. brasilense increases forage yield and the contribution of BNF to grass nutrition with N, as well as urea-N recovery by the forage grass.
650 $aForage yield
650 $aCynodon Dactylon
653 $aAbundância natural de 15N
653 $aNatural abundance of 15N
653 $aProdução de forragem
700 1 $aGIACOMINI, S. J.
700 1 $aOLIVO, C. J.
700 1 $aBRATZ, V. F.
700 1 $aQUATRIN, M. P.
700 1 $aSCHAEFER, G. L.
773 $tPesquisa Agropecuária Brasileira$gv. 55, e01242, 2020.
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Embrapa Unidades Centrais (AI-SEDE) |
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| 1. |  | OLIVEIRA, R. J.; RESENDE, A. L. S.; VAINA, A. J. da S.; SANTOS, C. M. A. dos; GUERRA, J. G. M.; AGUIAR-MENEZES, E. de L. Diversidade e estrutura da comunidade de joaninhas em monocultivo de couve e em consórcio com coentro, sob manejo orgânico. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 22., 2008, Uberlândia. Ciência, tecnologia e inovação: anais... Uberlândia: Sociedade Entomológica do Brasil, 2008. 1 p. 1 CD-ROM. ResumoID:501-1. Parceria: UFRRJ.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| Registros recuperados : 1 | |
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