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| 9. |  | ARAÚJO, J. G. S. de; SILVA, A. F.; JATOBÁ, L. Atividades antrópicas e a qualidade das águas do rio Ipojuca no município de Caruaru, PE: documentário como proposta para o Ensino das Ciências Ambientais. In: MALHEIROS, T. F.; FERREIRA, C. de P.; FAZION, F.; CARVALHO, H.; ORTÊNCIO FILHO, H.; CHAVES, J. M.; CAVALCANTE, K. V.; AMAZONAS, M.; BATISTA, R. de O. S. (org.). Experiências no ensino das Ciências ambientais. São Paulo: Com-Arte: ANA, 2023. Cap. 22, p. 316-329. (PROFCIAMB. Série pesquisa e reflexão).| Biblioteca(s): Embrapa Semiárido. |
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| 20. | | ARAÚJO, J. G. F. P. C.; MEDEIROS, S. R. de; SOUZA, A. R. D. L.; MARTELO, L. L.; SILVA, R. A.; FALCHI FILHO, D.; OLIVEIRA, J. C. P. Eficiência alimentar entre novilhos Nelore confinados em diferentes instalações. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE,5., 2009, Campo Grande, MS. [Anais da ...]. Campo Grande, MS: Embrapa Gado de Corte, 2009. 1 p.| Biblioteca(s): Embrapa Gado de Corte. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Gado de Leite; Embrapa Solos. |
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Data corrente: |
27/03/2020 |
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Data da última atualização: |
10/04/2024 |
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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: |
BRETAS, I. L.; PACIULLO, D. S. C.; ALVES, B. J. R.; MARTINS, M. R.; CARDOSO, A. S; LIMA, M. A.; RODRIGUES, R. de A. R.; SILVA, F. F.; CHIZZOTII, F. H. M. |
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Afiliação: |
IGOR L. BRETAS, UNIVERSIDADE FEDERAL DE VIÇOSA; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; BRUNO JOSE RODRIGUES ALVES, CNPAB; MÁRCIO R. MARTINS; ABMAEL S. CARDOSO, UNIVERSIDADE ESTADUAL PAULISTA; MARINA A. LIMA, UNIVERSIDADE FEDERAL DE VIÇOSA; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS; FABYANO F. SILVA, UNIVERSIDADE FEDERAL DE VIÇOSA; FERNANDA H. M. CHIZZOTTI, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
Nitrous oxide, methane, and ammonia emissions from cattle excreta on Brachiaria decumbens growing in monoculture or silvopasture with Acacia mangium and Eucalyptus grandis. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Agriculture, Ecosystems and Environment, v. 295, e106896, 2020. |
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DOI: |
https://doi.org/10.1016/j.agee.2020.106896 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT We quantified nitrous oxide (N2O), methane (CH4), and ammonia (NH3) emissions from cattle urine and dung patches on Brachiaria decumbens growing in a long-term silvopasture (SPS) or in monoculture (MONO) during the annual rainy and dry periods in southwest Brazil. We hypothesized that microenvironmental changes triggered by dense shade and litter, provided by trees, and pasture quality in SPS would affect greenhouse gas emissions from cattle excreta. Two field trials (rainy and dry season) were carried out using manual closed static chambers in a 3 × 2 factorial scheme, corresponding to three excreta types (urine, dung, and control without excreta) and two pasture systems (SPS and MONO), in a block design with three blocks and two replicates per block (n = 6 per treatment). Generally, N2O and CH4 fluxes were higher in SPS than in MONO. Notably, N losses in the form of N2O did not exceed 0.10 %, except for N2O emissions from urine deposited during the rainy season in SPS (0.39 % of applied N). Cattle dung was also a source of CH4. The highest fluxes were observed under SPS during the rainy season, but emissions were generally low, with emission rates < 0.1 kg CH4 head−1 yr−1. The highest N losses by NH3 volatilization were observed for urine under MONO, amounting to 8.3 % of total N applied during the rainy season and 17.1 % during the dry season. Our results demonstrate that N2O, CH4, and NH3 emissions from cattle are influenced by pasture system, excreta type, and season. N2O and CH4 emissions increase in long-term SPS, while NH3 losses reduce. MenosABSTRACT We quantified nitrous oxide (N2O), methane (CH4), and ammonia (NH3) emissions from cattle urine and dung patches on Brachiaria decumbens growing in a long-term silvopasture (SPS) or in monoculture (MONO) during the annual rainy and dry periods in southwest Brazil. We hypothesized that microenvironmental changes triggered by dense shade and litter, provided by trees, and pasture quality in SPS would affect greenhouse gas emissions from cattle excreta. Two field trials (rainy and dry season) were carried out using manual closed static chambers in a 3 × 2 factorial scheme, corresponding to three excreta types (urine, dung, and control without excreta) and two pasture systems (SPS and MONO), in a block design with three blocks and two replicates per block (n = 6 per treatment). Generally, N2O and CH4 fluxes were higher in SPS than in MONO. Notably, N losses in the form of N2O did not exceed 0.10 %, except for N2O emissions from urine deposited during the rainy season in SPS (0.39 % of applied N). Cattle dung was also a source of CH4. The highest fluxes were observed under SPS during the rainy season, but emissions were generally low, with emission rates < 0.1 kg CH4 head−1 yr−1. The highest N losses by NH3 volatilization were observed for urine under MONO, amounting to 8.3 % of total N applied during the rainy season and 17.1 % during the dry season. Our results demonstrate that N2O, CH4, and NH3 emissions from cattle are influenced by pasture system, excret... Mostrar Tudo |
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Palavras-Chave: |
Ammonia volatilization; Dung. |
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Thesagro: |
Efeito Estufa; Gás; Pastagem. |
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Thesaurus NAL: |
Greenhouses; Urine. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02587naa a2200313 a 4500
001 2124105
005 2024-04-10
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.agee.2020.106896$2DOI
100 1 $aBRETAS, I. L.
245 $aNitrous oxide, methane, and ammonia emissions from cattle excreta on Brachiaria decumbens growing in monoculture or silvopasture with Acacia mangium and Eucalyptus grandis.$h[electronic resource]
260 $c2020
520 $aABSTRACT We quantified nitrous oxide (N2O), methane (CH4), and ammonia (NH3) emissions from cattle urine and dung patches on Brachiaria decumbens growing in a long-term silvopasture (SPS) or in monoculture (MONO) during the annual rainy and dry periods in southwest Brazil. We hypothesized that microenvironmental changes triggered by dense shade and litter, provided by trees, and pasture quality in SPS would affect greenhouse gas emissions from cattle excreta. Two field trials (rainy and dry season) were carried out using manual closed static chambers in a 3 × 2 factorial scheme, corresponding to three excreta types (urine, dung, and control without excreta) and two pasture systems (SPS and MONO), in a block design with three blocks and two replicates per block (n = 6 per treatment). Generally, N2O and CH4 fluxes were higher in SPS than in MONO. Notably, N losses in the form of N2O did not exceed 0.10 %, except for N2O emissions from urine deposited during the rainy season in SPS (0.39 % of applied N). Cattle dung was also a source of CH4. The highest fluxes were observed under SPS during the rainy season, but emissions were generally low, with emission rates < 0.1 kg CH4 head−1 yr−1. The highest N losses by NH3 volatilization were observed for urine under MONO, amounting to 8.3 % of total N applied during the rainy season and 17.1 % during the dry season. Our results demonstrate that N2O, CH4, and NH3 emissions from cattle are influenced by pasture system, excreta type, and season. N2O and CH4 emissions increase in long-term SPS, while NH3 losses reduce.
650 $aGreenhouses
650 $aUrine
650 $aEfeito Estufa
650 $aGás
650 $aPastagem
653 $aAmmonia volatilization
653 $aDung
700 1 $aPACIULLO, D. S. C.
700 1 $aALVES, B. J. R.
700 1 $aMARTINS, M. R.
700 1 $aCARDOSO, A. S
700 1 $aLIMA, M. A.
700 1 $aRODRIGUES, R. de A. R.
700 1 $aSILVA, F. F.
700 1 $aCHIZZOTII, F. H. M.
773 $tAgriculture, Ecosystems and Environment$gv. 295, e106896, 2020.
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