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| Registros recuperados : 161 | |
| 61. |  | MOREIRA, J. M. M. A. P.; RODRIGUES, L. N.; ZANATTA, J. A.; TORRES, M. de O. Planejamento de irrigação em pivô central por meio de modelos matemáticos. In: SIMPÓSIO BRASILEIRO DE RECURSOS HÍDRICOS, 20., 2013, Bento Gonçalves. Água, desenvolvimento econômico e socioambiental. Porto Alegre, RS: Associação Brasileira de Recursos Hídricos, 2013. 8 p.| Biblioteca(s): Embrapa Florestas. |
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| 63. | | RODRIGUES, R. de A. R.; ALVES, B. J. R.; MOMBACH, M. A.; ZANATTA, J. A. Medição de fluxos de gases de efeito estufa e de variáveis acessórias. In: MENDONÇA, E. de S.; MATOS, E. da S. (Ed.). Matéria orgânica do solo: métodos de análises. 2. ed. rev. e atual. Viçosa, MG: UFV, Gefert, 2017. cap. 6, p. 171-214.| Biblioteca(s): Embrapa Agrossilvipastoril; Embrapa Florestas; Embrapa Solos. |
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| 65. | | ZANATTA, J. A.; SALTON, J. C.; BAYER, C.; TOMAZI, M.; COLMAN, I.; LOPEZ, A. Emissões de gases de efeito estufa em sistemas de manejo do solo durante ciclo de produção da soja no Cerrado. In: REUNIÃO PARANAENSE DE CIÊNCIA DO SOLO, 2., 2011, Curitiba. Resumos. Curitiba: Universidade Federal do Paraná; Sociedade Paranaense de Ciência do Solo, 2011. p. 24.| Biblioteca(s): Embrapa Florestas. |
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| 75. | | ROSSI, L. M. B.; BORDRON, B.; ZANATTA, J. A.; HOLLER, W. A.; RACHWAL, M. F. G. Carbon storage accounting in brazilian harvested wood products. In: WORLD FORESTRY CONGRESS, 15., 2022, Seoul. Paper, poster & video. Seoul: Korea Forest Service; Rome: FAO, 2022.| Biblioteca(s): Embrapa Florestas. |
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| 76. | | SALTON, J. C.; TOMAZI, M.; COMUNELLO, E.; ZANATTA, J. A.; RABELLO, L. M. Condutividade elétrica e atributos físicos e químicos de um Latossolo após 15 anos sob sistemas de manejo em Mato Grosso do Sul. In: INAMASU, R. Y.; NAIME, J. de M.; RESENDE, A. V. de; BASSOI, L. H.; BERNARDI, A. C. de C. (Ed.). Agricultura de precisão: um novo olhar. São Carlos: Embrapa Instrumentação, 2011. p. 254-260.| Biblioteca(s): Embrapa Agropecuária Oeste; Embrapa Florestas; Embrapa Instrumentação. |
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| 78. | | ESCOBAR, L. F.; AMADO, T. J. C.; BAYER, C.; ZANATTA, J. A.; FIORIN, J. E. Postharvest nitrous oxide emissions from a subtropical oxisol as influenced by summer crop residues and their management. Revista Brasileira de Ciência do Solo, Viçosa, v. 34, n. 2, p. 507-516, mar./abr. 2010| Biblioteca(s): Embrapa Agropecuária Oeste. |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
15/12/2016 |
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Data da última atualização: |
15/12/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
BAYERA, C.; GOMES, J.; ZANATTA, J. A.; VIEIRA, F. C. B.; DIECKOW, J. |
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Afiliação: |
Cimélio Bayera, Universidade Federal do Rio Grande do Sul; Juliana Gomes, Pós-graduanda da Universidade Federal do Rio Grande do Sul; JOSILEIA ACORDI ZANATTA, CNPF; Frederico Costa Beber Vieira, Universidade Federal do Pampa; Jeferson Dieckow, Universidade Federal do Paraná. |
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Título: |
Mitigating greenhouse gas emissions from a subtropical Ultisol by using long-term no-tillage in combination with legume cover crops. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Soil & Tillage Research, v. 161, p. 86-94, Aug. 2016. |
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DOI: |
http://dx.doi.org/10.1016/j.still.2016.03.011 |
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Idioma: |
Inglês |
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Conteúdo: |
Greenhouse gas (GHG) emissions can be partially mitigated with conservation agriculture. In this study, we assessed the effects of conventional tillage (CT) and no-tillage (NT), as well as five NT cover crop-based cropping systems, on yield-scaled GHG emissions in two long-term experiments (18 and 19 years) on a subtropical Paleudult. Air samples collected in static closed chambers were used to measure nitrous oxide (N2O) and methane (CH4) fluxes. The annual rate of change in soil organic C from the beginning of the experiments was used as proxy for net CO2 flux. Cumulative annual emissions of the three GHG and the CO2 costs of agricultural inputs and operations were taken in full account when estimating the global warming potential (GWP). Under legume cover crops, NT soil exhibited increased N2O emissions relative to CT soil (531 vs 217 kg CO2eq ha1 yr1); however, emissions of this gas from NT soil were fully offset by CO2 retention in soil organic matter (2063 to 3940 kg CO2 ha1 yr1). Soil CH4 fluxes were very low with all management systems (1.5 to 30.5 kg CO2eq ha1 yr1). NT soil under legume cover crops behaved as a net sink for GHG (GWP ranged from 971 to 2818 kg CO2eq ha1 yr1); by contrast, CT soil and NT soil with a low biomass input were net sources of GHG (GWP ranged from 857 to 2133 kg CO2eq ha1 yr1). The legume cover crops increased maize yield and further reduced yield-scaled GHG emissions. This result suggests that conservation management practices involving no-till in combination with legume cover crops provide an effective approach to sustainable low-C footprint food production in subtropical regions. MenosGreenhouse gas (GHG) emissions can be partially mitigated with conservation agriculture. In this study, we assessed the effects of conventional tillage (CT) and no-tillage (NT), as well as five NT cover crop-based cropping systems, on yield-scaled GHG emissions in two long-term experiments (18 and 19 years) on a subtropical Paleudult. Air samples collected in static closed chambers were used to measure nitrous oxide (N2O) and methane (CH4) fluxes. The annual rate of change in soil organic C from the beginning of the experiments was used as proxy for net CO2 flux. Cumulative annual emissions of the three GHG and the CO2 costs of agricultural inputs and operations were taken in full account when estimating the global warming potential (GWP). Under legume cover crops, NT soil exhibited increased N2O emissions relative to CT soil (531 vs 217 kg CO2eq ha1 yr1); however, emissions of this gas from NT soil were fully offset by CO2 retention in soil organic matter (2063 to 3940 kg CO2 ha1 yr1). Soil CH4 fluxes were very low with all management systems (1.5 to 30.5 kg CO2eq ha1 yr1). NT soil under legume cover crops behaved as a net sink for GHG (GWP ranged from 971 to 2818 kg CO2eq ha1 yr1); by contrast, CT soil and NT soil with a low biomass input were net sources of GHG (GWP ranged from 857 to 2133 kg CO2eq ha1 yr1). The legume cover crops increased maize yield and further reduced yield-scaled GHG emissions. This result suggests that conservation management practices involving no-... Mostrar Tudo |
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Palavras-Chave: |
Gás de efeito estufa; Óxido nitroso; Sequestro de carbono. |
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Thesaurus NAL: |
Carbon sequestration; Greenhouse gas emissions; Long term experiments; Nitrous oxide. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02509naa a2200265 a 4500
001 2058698
005 2016-12-15
008 2016 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.still.2016.03.011$2DOI
100 1 $aBAYERA, C.
245 $aMitigating greenhouse gas emissions from a subtropical Ultisol by using long-term no-tillage in combination with legume cover crops.$h[electronic resource]
260 $c2016
520 $aGreenhouse gas (GHG) emissions can be partially mitigated with conservation agriculture. In this study, we assessed the effects of conventional tillage (CT) and no-tillage (NT), as well as five NT cover crop-based cropping systems, on yield-scaled GHG emissions in two long-term experiments (18 and 19 years) on a subtropical Paleudult. Air samples collected in static closed chambers were used to measure nitrous oxide (N2O) and methane (CH4) fluxes. The annual rate of change in soil organic C from the beginning of the experiments was used as proxy for net CO2 flux. Cumulative annual emissions of the three GHG and the CO2 costs of agricultural inputs and operations were taken in full account when estimating the global warming potential (GWP). Under legume cover crops, NT soil exhibited increased N2O emissions relative to CT soil (531 vs 217 kg CO2eq ha1 yr1); however, emissions of this gas from NT soil were fully offset by CO2 retention in soil organic matter (2063 to 3940 kg CO2 ha1 yr1). Soil CH4 fluxes were very low with all management systems (1.5 to 30.5 kg CO2eq ha1 yr1). NT soil under legume cover crops behaved as a net sink for GHG (GWP ranged from 971 to 2818 kg CO2eq ha1 yr1); by contrast, CT soil and NT soil with a low biomass input were net sources of GHG (GWP ranged from 857 to 2133 kg CO2eq ha1 yr1). The legume cover crops increased maize yield and further reduced yield-scaled GHG emissions. This result suggests that conservation management practices involving no-till in combination with legume cover crops provide an effective approach to sustainable low-C footprint food production in subtropical regions.
650 $aCarbon sequestration
650 $aGreenhouse gas emissions
650 $aLong term experiments
650 $aNitrous oxide
653 $aGás de efeito estufa
653 $aÓxido nitroso
653 $aSequestro de carbono
700 1 $aGOMES, J.
700 1 $aZANATTA, J. A.
700 1 $aVIEIRA, F. C. B.
700 1 $aDIECKOW, J.
773 $tSoil & Tillage Research$gv. 161, p. 86-94, Aug. 2016.
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