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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
08/02/2013 |
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Data da última atualização: |
19/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PIVA, J. T.; DIECKOW, J.; BAYER, C.; ZANATTA, J. A.; MORAES, A. de; PAULETTI, V.; TOMAZI, M.; PERGHER, M. |
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Afiliação: |
Jonatas Thiago Piva, UFPR; Jeferson Dieckow, UFPR; Cimélio Bayer, UFRGS; JOSILEIA ACORDI ZANATTA, CNPF; Anibal de Moraes, UFPR; Volnei Pauletti, Fundação ABC para Assistência e Divulgação Técnica Agropecuária; MICHELY TOMAZI, CPAO; Maico Pergher, UFPR. |
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Título: |
No-till reduces global warming potential in a subtropical Ferralsol. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Plant and Soil, v. 361, p. 359-373, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Aims For tropical and subtropical soils, information is scarce regarding the global warming potential (GWP) of no-till (NT) agriculture systems. Soil organic carbon (OC) sequestration is promoted by NT agriculture, but this may be offset by increased nitrous oxide (N2O) emissions. We assessed the GWP of a NT as compared to conventional tillage (CT) in a subtropical Brazilian Ferralsol. Methods From September 2008 to September 2009 we used static chambers and chromatographic analyses to assess N2O and methane (CH4) soil fluxes in an area previously used for 3–4 years as a fieldexperiment. The winter cover crop was ryegrass (Lolium multiflorum Lam.) while in summer it was silage maize (Zea mays L.). Results The accumulated N2O emission for NT was about half that of CT (1.26 vs 2.42 kg N ha?1 year?1, P00.06). Emission peaks for N2O occurred for a month after CT, presumably induced by mineralization of residual nitrogen. In both systems, the highest N2O flux occurred after sidedressing maize with inorganic nitrogen, although the flux was lower in NT than CT (132 vs 367 ?g N m?2 h?1, P00.05), possibly because some of the sidedressed nitrogen was immobilized by ryegrass residues on the surface of the NT soil. Neither water-filled pore space (WFPS) nor inorganic nitrogen (NH4+ and NO3?) correlated with N2O fluxes, although at some specific periods relationships were observed with inorganic nitrogen. Soils subjected to CT or NT both acted as CH4 sinks during most of the experiment, although a CH4 peak in May (autumn) led to overall CH4 emissions of 1.15 kg CH4-C ha?1 year?1 for CT and 1.08 kg CH4-C ha?1 year?1 for NT (P00.90). The OC stock in the 0–20 cm soil layer was slightly higher for NT than for CT (67.20 vs 66.49 Mg ha?1, P00.36). In the 0–100 cm layer, the OC stock was significantly higher for NT as compared to CT (234.61 vs 231.95 Mg ha?1, P00.01), indicating that NT resulted in the sequestration of OC at a rate of 0.76 Mg ha?1 year?1. The CO2 equivalent cost of agronomic practices was similar for CT (1.72 Mg CO2eq ha?1 year?1) andNT(1.62MgCO2eq ha?1 year?1). However, NT reduced the GWP relative to CT (?0.55 vs 2.90 Mg CO2eq ha?1 year?1), with the difference of ?3.45 Mg CO2eq ha?1 year?1 (negative value implies mitigation) being driven mainly by OC sequestration. The greenhouse gas intensity (GHGI, equivalent to GWP/silage yield) was lower for NT than CT (?31.7 vs 171.1 kg CO2eq Mg?1 for silage maize). Conclusion As compared to CT, greenhouse gas emissions from a subtropical soil can be mitigated by NT by lowering N2O emissions and, principally, sequestration of CO2-C. MenosAims For tropical and subtropical soils, information is scarce regarding the global warming potential (GWP) of no-till (NT) agriculture systems. Soil organic carbon (OC) sequestration is promoted by NT agriculture, but this may be offset by increased nitrous oxide (N2O) emissions. We assessed the GWP of a NT as compared to conventional tillage (CT) in a subtropical Brazilian Ferralsol. Methods From September 2008 to September 2009 we used static chambers and chromatographic analyses to assess N2O and methane (CH4) soil fluxes in an area previously used for 3–4 years as a fieldexperiment. The winter cover crop was ryegrass (Lolium multiflorum Lam.) while in summer it was silage maize (Zea mays L.). Results The accumulated N2O emission for NT was about half that of CT (1.26 vs 2.42 kg N ha?1 year?1, P00.06). Emission peaks for N2O occurred for a month after CT, presumably induced by mineralization of residual nitrogen. In both systems, the highest N2O flux occurred after sidedressing maize with inorganic nitrogen, although the flux was lower in NT than CT (132 vs 367 ?g N m?2 h?1, P00.05), possibly because some of the sidedressed nitrogen was immobilized by ryegrass residues on the surface of the NT soil. Neither water-filled pore space (WFPS) nor inorganic nitrogen (NH4+ and NO3?) correlated with N2O fluxes, although at some specific periods relationships were observed with inorganic nitrogen. Soils subjected to CT or NT both acted as CH4 sinks during most of the experiment, ... Mostrar Tudo |
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Palavras-Chave: |
Aquecimento global. |
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Thesagro: |
Plantio Direto; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03261naa a2200241 a 4500
001 1948897
005 2015-02-19
008 2012 bl uuuu u00u1 u #d
100 1 $aPIVA, J. T.
245 $aNo-till reduces global warming potential in a subtropical Ferralsol.$h[electronic resource]
260 $c2012
520 $aAims For tropical and subtropical soils, information is scarce regarding the global warming potential (GWP) of no-till (NT) agriculture systems. Soil organic carbon (OC) sequestration is promoted by NT agriculture, but this may be offset by increased nitrous oxide (N2O) emissions. We assessed the GWP of a NT as compared to conventional tillage (CT) in a subtropical Brazilian Ferralsol. Methods From September 2008 to September 2009 we used static chambers and chromatographic analyses to assess N2O and methane (CH4) soil fluxes in an area previously used for 3–4 years as a fieldexperiment. The winter cover crop was ryegrass (Lolium multiflorum Lam.) while in summer it was silage maize (Zea mays L.). Results The accumulated N2O emission for NT was about half that of CT (1.26 vs 2.42 kg N ha?1 year?1, P00.06). Emission peaks for N2O occurred for a month after CT, presumably induced by mineralization of residual nitrogen. In both systems, the highest N2O flux occurred after sidedressing maize with inorganic nitrogen, although the flux was lower in NT than CT (132 vs 367 ?g N m?2 h?1, P00.05), possibly because some of the sidedressed nitrogen was immobilized by ryegrass residues on the surface of the NT soil. Neither water-filled pore space (WFPS) nor inorganic nitrogen (NH4+ and NO3?) correlated with N2O fluxes, although at some specific periods relationships were observed with inorganic nitrogen. Soils subjected to CT or NT both acted as CH4 sinks during most of the experiment, although a CH4 peak in May (autumn) led to overall CH4 emissions of 1.15 kg CH4-C ha?1 year?1 for CT and 1.08 kg CH4-C ha?1 year?1 for NT (P00.90). The OC stock in the 0–20 cm soil layer was slightly higher for NT than for CT (67.20 vs 66.49 Mg ha?1, P00.36). In the 0–100 cm layer, the OC stock was significantly higher for NT as compared to CT (234.61 vs 231.95 Mg ha?1, P00.01), indicating that NT resulted in the sequestration of OC at a rate of 0.76 Mg ha?1 year?1. The CO2 equivalent cost of agronomic practices was similar for CT (1.72 Mg CO2eq ha?1 year?1) andNT(1.62MgCO2eq ha?1 year?1). However, NT reduced the GWP relative to CT (?0.55 vs 2.90 Mg CO2eq ha?1 year?1), with the difference of ?3.45 Mg CO2eq ha?1 year?1 (negative value implies mitigation) being driven mainly by OC sequestration. The greenhouse gas intensity (GHGI, equivalent to GWP/silage yield) was lower for NT than CT (?31.7 vs 171.1 kg CO2eq Mg?1 for silage maize). Conclusion As compared to CT, greenhouse gas emissions from a subtropical soil can be mitigated by NT by lowering N2O emissions and, principally, sequestration of CO2-C.
650 $aPlantio Direto
650 $aSolo
653 $aAquecimento global
700 1 $aDIECKOW, J.
700 1 $aBAYER, C.
700 1 $aZANATTA, J. A.
700 1 $aMORAES, A. de
700 1 $aPAULETTI, V.
700 1 $aTOMAZI, M.
700 1 $aPERGHER, M.
773 $tPlant and Soil$gv. 361, p. 359-373, 2012.
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| 5. |  | CARMO, L. S.; QUEZADO-DURVAL, A. M.; LEONARDECZ-NETO, E.; QUIRINO, B. F. Identificação de ecótipos de Arabidopsis thaliana resistentes à infecção por Xanthonoma campestris pv. campestris. Fitopatologia Brasileira, Brasília, DF, v. 30, p. S63, ago. 2005. Suplemento. Resumo 048. Trabalho apresentado no 38. Congresso Brasileiro de Fitopatologia, 2005, Brasília.| Biblioteca(s): Embrapa Hortaliças. |
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| 8. | | DINATO, N. B.; SANTOS, I. R. I.; LEONARDECZ NETO, E.; PAULA, A. F. de; FÁVERO, A. P. Conservação a longo prazo de grãos de pólen de Paspalum notatum por criopreservação. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 4., 2016, Curitiba. Recursos genéticos no Brasil: a base para o desenvolvimento sustentável. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2016. p. 317.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 9. | | DINATO, N. B.; SANTOS, I. R. I.; LEONARDECZ NETO, E.; PAULA, A. F. de; FÁVERO, A. P. Conservação a longo prazo de grãos de pólen de Paspalum notatum por criopreservação. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 4., 2016, Curitiba. Recursos genéticos no Brasil: a base para o desenvolvimento sustentável: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2016.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 11. | | DINATO, N. B.; SANTOS, I. R. I.; LEONARDECZ NETO, E.; PAULA, A. F. de; FAVERO, A. P. Viabilidade de grãos de pólen de Paspalum notatum armazenados em nitrogênio líquido. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA PARA O PROGRESSO DA CIÊNCIA, 67., 2015, São Carlos, SP. Resumos....São Paulo: SBPC, 2015 C.8.1| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 12. | | MICHELOTTO, M. D.; FÁVERO, A. P.; SUASSUNA, N. D.; MARTINS, A. L. de M.; LEONARDECZ NETO, E.; VALLS, J. F. M.; GODOY, I. J. de. Avaliação de acessos de espécies silvestres de Arachis para resistência a doenças fúngicas foliares. In: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasília, DF. Anais... Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia: Fundação de Apoio à Pesquisa Científica e Tecnológica - FUNCREDI, 2008. p.94.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 13. | | MICHELOTTO, M. D.; FÁVERO, A. P.; SUASSUNA, N. D.; MARTINS, A. L. de M.; LEONARDECZ NETO, E.; VALLS, J. F. M. V.; GODOY, I. J. de. Avaliação de acessos de espécies silvestres de Arachis para resistência a doenças fúngicas foliares. In: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasília, DF. Anais... Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2008. p. 94.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 14. | | SANTOS, R. F.; PALMA, F. R.; IRALA, L. H.; ALMEIDA, C. O. S.; FÁVERO, A. P.; LEONARDECZ-NETO, E.; VALLS, J. F. Caracterização morfológica de genitores e indivíduos das progênies f1 e f2 oriundas de cruzamentos entre Arachis stenosperma e Arachis duranensis. In: ENCONTRO LATINO AMERICANO DE ESPECIALISTAS EM ARACHIS, 4., 2004, Brasília, DF. IV Encontro Latino-Americano de Especialistas em Arachis. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2004. Não paginado. (Embrapa Recursos Genéticos e Biotecnologia. Documentos, 127).| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 15. | | PALMA, F. R.; SANTOS, R. F.; DIAS, J. G. O.; FÁVERO, A. P.; LEONARDECZ NETO, E.; BERTIOLI, D. J.; VALLS, J. F. M. Caracterização morfológica de uma família de híbridos interespecíficos de Arachis. In: ENCONTRO DO TALENTO ESTUDANTIL DA EMBRAPA RECURSOS GENÉTICOS E BIOTECNOLOGIA, 9., 2004, Brasília, DF. Anais: resumos dos trabalhos. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2004. p. 87.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 15 | |
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