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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
15/12/2016 |
Data da última atualização: |
15/12/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BAYERA, C.; GOMES, J.; ZANATTA, J. A.; VIEIRA, F. C. B.; DIECKOW, J. |
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. |
Título: |
Mitigating greenhouse gas emissions from a subtropical Ultisol by using long-term no-tillage in combination with legume cover crops. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Soil & Tillage Research, v. 161, p. 86-94, Aug. 2016. |
DOI: |
http://dx.doi.org/10.1016/j.still.2016.03.011 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Gás de efeito estufa; Óxido nitroso; Sequestro de carbono. |
Thesaurus Nal: |
Carbon sequestration; Greenhouse gas emissions; Long term experiments; Nitrous oxide. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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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Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
08/05/2007 |
Data da última atualização: |
02/08/2023 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
ASSIS, J. S. de; ROSA NETO, J. N.; SANTOS, A. E. O. dos; CAYRES, P. S. M.; MENDONÇA, O. R; BATISTA, P. F. |
Afiliação: |
JOSTON SIMAO DE ASSIS, CPATSA; JOSAPHA NUNES ROSA NETO, UNEB; ANA ELISA OLIVEIRA DOS SANTOS, CEFET - Petrolina-PE; PAULA SANCHO MAGALHÃES CAYRES, UNEB; OZEAS ROBERTO MENDONÇA, UNEB; PATRÍCIO FERREIRA BATISTA, UNEB. |
Título: |
Associação de filmes plásticos e refrigeração na conservação de mangas 'Tommy Atkins'. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE PÓS-COLHEITA DE FRUTAS, HORTALIÇAS E FLORES, 2., 2007, Viçosa, MG. Palestras e resumos... Viçosa, MG: UFV, 2007. |
Páginas: |
p. 319. |
Idioma: |
Português |
Conteúdo: |
Este trabalho objetivou avaliar alguns parâmetros de qualidade de mangas armazenadas sob refrigeração e revestidas por filmes plásticos. |
Palavras-Chave: |
Filme plástico; Tommy Atkins. |
Thesagro: |
Armazenamento; Conservação; Manga; Pós-Colheita; Refrigeração; Variedade. |
Thesaurus NAL: |
Mangoes. |
Categoria do assunto: |
A Sistemas de Cultivo |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/35211/1/OPB1213.pdf
|
Marc: |
LEADER 01025nam a2200289 a 4500 001 1152993 005 2023-08-02 008 2007 bl uuuu u00u1 u #d 100 1 $aASSIS, J. S. de 245 $aAssociação de filmes plásticos e refrigeração na conservação de mangas 'Tommy Atkins'. 260 $aIn: SIMPÓSIO BRASILEIRO DE PÓS-COLHEITA DE FRUTAS, HORTALIÇAS E FLORES, 2., 2007, Viçosa, MG. Palestras e resumos... Viçosa, MG: UFV$c2007 300 $ap. 319. 520 $aEste trabalho objetivou avaliar alguns parâmetros de qualidade de mangas armazenadas sob refrigeração e revestidas por filmes plásticos. 650 $aMangoes 650 $aArmazenamento 650 $aConservação 650 $aManga 650 $aPós-Colheita 650 $aRefrigeração 650 $aVariedade 653 $aFilme plástico 653 $aTommy Atkins 700 1 $aROSA NETO, J. N. 700 1 $aSANTOS, A. E. O. dos 700 1 $aCAYRES, P. S. M. 700 1 $aMENDONÇA, O. R 700 1 $aBATISTA, P. F.
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