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| 12. |  | CARVALHO, A. M. de. Plantio direto e plantas de cobertura em agroecossistemas do Cerrado. In: PARRON, L. M.; AGUIAR, L. M. de S.; DUBOC, E.; OLIVEIRA-FILHO, E. C.; CAMARGO, A. J. A. de; AQUINO, F. de G. (Ed.). Cerrado: desafios e oportunidades para o desenvolvimento sustentável. Planaltina, DF: Embrapa Cerrados, 2008. cap. 8, p. 229-262.| Biblioteca(s): Embrapa Cerrados. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
26/10/2023 |
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Data da última atualização: |
26/10/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
OLIVEIRA, A. D. de; RIBEIRO, F. P.; FIGUEIREDO, C. C. de; MULLER, A. G.; MALAQUIAS, J. V.; SANTOS, I. L. dos; SA, M. A. C. de; SOARES, J. P. G.; SANTOS, M. V. A. dos; CARVALHO, A. M. de. |
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Afiliação: |
ALEXSANDRA DUARTE DE OLIVEIRA, CPAC; FABIANA PIONTEKOWSKI RIBEIRO; CÍCERO CÉLIO DE FIGUEIREDO, Universidade de Brasília; ARTUR GUSTAVO MULLER, CPAC; JUACI VITORIA MALAQUIAS, CPAC; ISIS LIMA DOS SANTOS, Universidade de Brasília; MARCOS AURELIO CAROLINO DE SA, CPAC; JOAO PAULO GUIMARAES SOARES, CPAC; MARCOS VINÍCIUS ARAÚJO DOS SANTOS; ARMINDA MOREIRA DE CARVALHO, CPAC. |
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Título: |
Effects of soil management, rotation and sequence of crops on soil nitrous oxide emissions in the Cerrado: a multi-factor assessment. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Environmental Management, v. 348, 119295, 2023. |
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DOI: |
https://doi.org/10.1016/j.jenvman.2023.119295 |
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Idioma: |
Português |
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Conteúdo: |
The emission of nitrous oxide (N2O), one of the main greenhouse gases, which contributes significantly to global warming, is a major challenge in modern agriculture. The effects of land use systems on N2O emissions are the result of multiple variables, whose interactions need to be better understood. In this sense, this study analyzed the possible effects of different soil managements, crop rotations and sequences, as well as edaphoclimatic factors causing N2O emissions from soils in the Cerrado biome (scrubland). The following four land-use systems were evaluated: 1) No-tillage cultivation with biennial crop rotations and sequences: legume-grass and alternating grass-legume crops in the second season - NT-SS/MP; 2) No-tillage with biennial rotations and sequences: grasslegume and alternating second crop of legume-grass - NT-MP/SS; 3) Conventional planting with disc harrow and biennial legume-grass rotation-CT-S/M; and 4) Native Cerrado (CE), no agricultural land use. The legume and grass species, planted in the two no-tillage treatments were soybean, followed by sorghum BRS3.32 (Sorghum bicolor (L.) Moench) (SS), and maize, followed by pigeon pea (Cajanus cajan) (MP). Nitrous oxide emissions were evaluated for 25 months (October 2013 to October 2015), and the results were grouped in annual, total, growing and non-growing seasons, as well as yield-scaled N2O emissions. The mean N2O fluxes were 24.14, 15.71, 32.49 and 1.87 ?g m? 2 h? 1 in the NT-SS/MP, NT-MP/SS, CT-S/M and Cerrado areas respectively. Cumulative N2O fluxes over the total evaluation period from the systems NT-SS/MP, NT-MP/SS, CT-S/M and CE, respectively, were 3.47, 2.29, 4.87 and 0.26 kg ha? 1. A correlation between N2O fluxes and the environmental variables was observed, with the exception of water-filled pore space (WFPS), but N2O peaks were associated with WFPS values of >65%. In the 2014?2015 growing season, yield-scaled N2O emissions from NT-MP/SS were lower than from CT-S/M. A multi-factor approach indicated that conventional management with main season soybean or maize and no alternating crop sequence intensifies soil N2O emissions in the Cerrado. MenosThe emission of nitrous oxide (N2O), one of the main greenhouse gases, which contributes significantly to global warming, is a major challenge in modern agriculture. The effects of land use systems on N2O emissions are the result of multiple variables, whose interactions need to be better understood. In this sense, this study analyzed the possible effects of different soil managements, crop rotations and sequences, as well as edaphoclimatic factors causing N2O emissions from soils in the Cerrado biome (scrubland). The following four land-use systems were evaluated: 1) No-tillage cultivation with biennial crop rotations and sequences: legume-grass and alternating grass-legume crops in the second season - NT-SS/MP; 2) No-tillage with biennial rotations and sequences: grasslegume and alternating second crop of legume-grass - NT-MP/SS; 3) Conventional planting with disc harrow and biennial legume-grass rotation-CT-S/M; and 4) Native Cerrado (CE), no agricultural land use. The legume and grass species, planted in the two no-tillage treatments were soybean, followed by sorghum BRS3.32 (Sorghum bicolor (L.) Moench) (SS), and maize, followed by pigeon pea (Cajanus cajan) (MP). Nitrous oxide emissions were evaluated for 25 months (October 2013 to October 2015), and the results were grouped in annual, total, growing and non-growing seasons, as well as yield-scaled N2O emissions. The mean N2O fluxes were 24.14, 15.71, 32.49 and 1.87 ?g m? 2 h? 1 in the NT-SS/MP, NT-MP/SS, CT-S/M and Ce... Mostrar Tudo |
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Palavras-Chave: |
GHGs emissions; Maize; N fertilization; Tillage system. |
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Thesaurus NAL: |
Soybeans. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03110naa a2200301 a 4500
001 2157543
005 2023-10-26
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jenvman.2023.119295$2DOI
100 1 $aOLIVEIRA, A. D. de
245 $aEffects of soil management, rotation and sequence of crops on soil nitrous oxide emissions in the Cerrado$ba multi-factor assessment.$h[electronic resource]
260 $c2023
520 $aThe emission of nitrous oxide (N2O), one of the main greenhouse gases, which contributes significantly to global warming, is a major challenge in modern agriculture. The effects of land use systems on N2O emissions are the result of multiple variables, whose interactions need to be better understood. In this sense, this study analyzed the possible effects of different soil managements, crop rotations and sequences, as well as edaphoclimatic factors causing N2O emissions from soils in the Cerrado biome (scrubland). The following four land-use systems were evaluated: 1) No-tillage cultivation with biennial crop rotations and sequences: legume-grass and alternating grass-legume crops in the second season - NT-SS/MP; 2) No-tillage with biennial rotations and sequences: grasslegume and alternating second crop of legume-grass - NT-MP/SS; 3) Conventional planting with disc harrow and biennial legume-grass rotation-CT-S/M; and 4) Native Cerrado (CE), no agricultural land use. The legume and grass species, planted in the two no-tillage treatments were soybean, followed by sorghum BRS3.32 (Sorghum bicolor (L.) Moench) (SS), and maize, followed by pigeon pea (Cajanus cajan) (MP). Nitrous oxide emissions were evaluated for 25 months (October 2013 to October 2015), and the results were grouped in annual, total, growing and non-growing seasons, as well as yield-scaled N2O emissions. The mean N2O fluxes were 24.14, 15.71, 32.49 and 1.87 ?g m? 2 h? 1 in the NT-SS/MP, NT-MP/SS, CT-S/M and Cerrado areas respectively. Cumulative N2O fluxes over the total evaluation period from the systems NT-SS/MP, NT-MP/SS, CT-S/M and CE, respectively, were 3.47, 2.29, 4.87 and 0.26 kg ha? 1. A correlation between N2O fluxes and the environmental variables was observed, with the exception of water-filled pore space (WFPS), but N2O peaks were associated with WFPS values of >65%. In the 2014?2015 growing season, yield-scaled N2O emissions from NT-MP/SS were lower than from CT-S/M. A multi-factor approach indicated that conventional management with main season soybean or maize and no alternating crop sequence intensifies soil N2O emissions in the Cerrado.
650 $aSoybeans
653 $aGHGs emissions
653 $aMaize
653 $aN fertilization
653 $aTillage system
700 1 $aRIBEIRO, F. P.
700 1 $aFIGUEIREDO, C. C. de
700 1 $aMULLER, A. G.
700 1 $aMALAQUIAS, J. V.
700 1 $aSANTOS, I. L. dos
700 1 $aSA, M. A. C. de
700 1 $aSOARES, J. P. G.
700 1 $aSANTOS, M. V. A. dos
700 1 $aCARVALHO, A. M. de
773 $tJournal of Environmental Management$gv. 348, 119295, 2023.
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