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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
13/12/2013 |
Data da última atualização: |
18/02/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BAYER, C.; GOMES, J.; VIEIRA, F. C. B.; ZANATTA, J. A.; PICCOLO, M. de C.; DIECKOW, J. |
Afiliação: |
Cimélio Bayer, UFRGS; Juliana Gomes, UFRGS; Frederico Costa Beber Vieira, UNIPAMPA; JOSILEIA ACORDI ZANATTA, CNPF; Marisa de Cássia Piccolo, USP; Jeferson Dieckow, UFPR. |
Título: |
Soil methane oxidation in a long-term no-tillage system in Southern Brazil. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Semina: Ciências Agrárias, Londrina, v. 34, n. 4, p. 1695-1706, jul./ago. 2013. |
Idioma: |
Português |
Conteúdo: |
Conservation management systems are usually suggested as alternative to restore the soil methane (CH4) oxidation capacity of degraded soils; however, little information is available on tropical and subtropical soils. Our objective was to evaluate the long-term (19 years) effect of no-tillage (NT) versus conventional tillage (CT) management systems on CH4 fluxes in a formerly degraded Acrisol in Southern Brazil. Annual CH4 fluxes of two cropping systems [O/M-black oat (Avena strigosa)/maize and V/M-vetch (Vigna sativa)/maize] were measured in NT and CT soils. Static chambers were used for air sampling, while chromatography was used for CH4 analysis. Analysis of the historical dataset at this experimental site indicated improvements in soil quality under the NT system, especially in legumebased cropping system (V/M) that exhibited the highest annual biomass input. CH4 fluxes ranged from ?42 ± 2 to 38 ± 16 ?g C m-2 h-1, and annual CH4 emissions ranged from ?825 ± 117 (CT V/M) to 453 ± 185 g C ha-1 (NT O/M). Thus, the annual CH4 oxidation capacity of the soil was not related to the soil quality produced by the soil management systems. On the basis of our results and published literature, we postulate that conservation management systems improve the methane oxidation and soil quality in distinct soil layers, which result in a slow effect of these management systems on the methane oxidation capacity. |
Palavras-Chave: |
Aquecimento global; Preparo; Sistema de cultura. |
Thesagro: |
Solo. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02087naa a2200229 a 4500 001 1973787 005 2015-02-18 008 2013 bl uuuu u00u1 u #d 100 1 $aBAYER, C. 245 $aSoil methane oxidation in a long-term no-tillage system in Southern Brazil.$h[electronic resource] 260 $c2013 520 $aConservation management systems are usually suggested as alternative to restore the soil methane (CH4) oxidation capacity of degraded soils; however, little information is available on tropical and subtropical soils. Our objective was to evaluate the long-term (19 years) effect of no-tillage (NT) versus conventional tillage (CT) management systems on CH4 fluxes in a formerly degraded Acrisol in Southern Brazil. Annual CH4 fluxes of two cropping systems [O/M-black oat (Avena strigosa)/maize and V/M-vetch (Vigna sativa)/maize] were measured in NT and CT soils. Static chambers were used for air sampling, while chromatography was used for CH4 analysis. Analysis of the historical dataset at this experimental site indicated improvements in soil quality under the NT system, especially in legumebased cropping system (V/M) that exhibited the highest annual biomass input. CH4 fluxes ranged from ?42 ± 2 to 38 ± 16 ?g C m-2 h-1, and annual CH4 emissions ranged from ?825 ± 117 (CT V/M) to 453 ± 185 g C ha-1 (NT O/M). Thus, the annual CH4 oxidation capacity of the soil was not related to the soil quality produced by the soil management systems. On the basis of our results and published literature, we postulate that conservation management systems improve the methane oxidation and soil quality in distinct soil layers, which result in a slow effect of these management systems on the methane oxidation capacity. 650 $aSolo 653 $aAquecimento global 653 $aPreparo 653 $aSistema de cultura 700 1 $aGOMES, J. 700 1 $aVIEIRA, F. C. B. 700 1 $aZANATTA, J. A. 700 1 $aPICCOLO, M. de C. 700 1 $aDIECKOW, J. 773 $tSemina: Ciências Agrárias, Londrina$gv. 34, n. 4, p. 1695-1706, jul./ago. 2013.
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Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Meio-Norte; Embrapa Tabuleiros Costeiros. |
Data corrente: |
15/08/2013 |
Data da última atualização: |
15/08/2013 |
Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
Autoria: |
NORONHA, M. de A.; SILVA, K. J. D. e; GONCALVES, S. R.; LIMA, L. R. L. |
Afiliação: |
MARISSONIA DE ARAUJO NORONHA, CPATC; KAESEL JACKSON DAMASCENO E SILVA, CPAMN; SAMARA RODRIGUES GONCALVES; LAIZE RAPHAELLE LEMOS LIMA. |
Título: |
Avaliação da resistência de genótipos de feijão-caupi a macrophomina phaseolina. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Aracaju: Embrapa Tabuleiros Costeiros, 2012. |
Páginas: |
4 p. |
Série: |
(Embrapa Tabuleiros Costeiros. Comunicado Técnico, 126). |
ISSN: |
1678-1937 |
Idioma: |
Português |
Palavras-Chave: |
Feijão caupi; Genética de planta. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/87807/1/Cot-126.pdf
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Marc: |
LEADER 00626nam a2200193 a 4500 001 1964153 005 2013-08-15 008 2012 bl uuuu u0uu1 u #d 022 $a1678-1937 100 1 $aNORONHA, M. de A. 245 $aAvaliação da resistência de genótipos de feijão-caupi a macrophomina phaseolina.$h[electronic resource] 260 $aAracaju: Embrapa Tabuleiros Costeiros$c2012 300 $a4 p. 490 $a(Embrapa Tabuleiros Costeiros. Comunicado Técnico, 126). 653 $aFeijão caupi 653 $aGenética de planta 700 1 $aSILVA, K. J. D. e 700 1 $aGONCALVES, S. R. 700 1 $aLIMA, L. R. L.
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