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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte; Embrapa Semiárido. |
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Data corrente: |
12/07/2023 |
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Data da última atualização: |
29/08/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BRITO, L. de C. R.; SOUZA, H. A. de; SIGNOR, D.; SOUZA, I. M. de; SANTOS, S. F. da C. B. dos; SOBRAL, A. H. S. |
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Afiliação: |
LUCÉLIA DE C. R. DE BRITO, FEDERAL UNIVERSITY OF PIAUÍ; HENRIQUE ANTUNES DE SOUZA, CPAMN; DIANA SIGNOR DEON, CPATSA; IVANDERLETE M. DE SOUZA STATE UNIVERSITY VALE DO ACARAU, STATE UNIVERSITY VALE DO ACARAU; SMAIELLO F. DA C. B. DOS SANTOS, FEDERAL UNIVERSITY OF PIAUÍ; AMANDA H. S. SOBRAL, FEDERAL UNIVERSITY OF PIAUÍ. |
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Título: |
Greenhouse gas emissions and chemical and physical soil attributes of off-season agricultural production systems in the savannah of Maranhão State, Brazil. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Engenharia Agrícola, v. 43, n. 2, e20220181, 2023. |
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DOI: |
http://dx.doi.org/10.1590/1809-4430-Eng.Agric.v43n2e20220181/2023 |
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Idioma: |
Inglês |
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Conteúdo: |
Management of agricultural production systems interferes with greenhouse gases (GHG) emissions, thereby altering physical, chemical, and biological attributes of soil; therefore, it is important to understand the relationship between soil attributes and GHG emissions. This study evaluated GHG emissions and their relationship with soil attributes in off- season soybean, maize, brachiaria and eucalyptus production systems. The experiment was carried out in Brejo, Maranhão, Brazil, with soybean (Glycine max), maize (Zea mays), brachiaria (Urochloa ruzizienses), and eucalyptus (Eucalyptus grandis). Fluxes of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) were evaluated using air samples analyzed by gas chromatography. Soil attributes were ammonium and nitrate contents, total organic carbon, moisture, pH, density, total porosity, and water-filled pore space. N2O flux was 287.1 μg m-2 h -1 for eucalyptus cultivation, while areas cultivated with soybeans, maize and brachiaria had influxes of 46.7, 7.2, and 13.17 μg m-2 h-1, respectively. In the off-season, the highest emissions of N2O and CO2 were measured in eucalyptus areas due to soil moisture and porosity conditions provided by accumulation of litter on the soil surface. |
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Palavras-Chave: |
Atributos físicos; Atributos químicos; Emissões de gases; Óxido nitroso. |
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Thesagro: |
Carbono; Cerrado; Dióxido de Carbono; Efeito Estufa; Metano; Solo. |
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Thesaurus Nal: |
Carbon dioxide; Cerrado soils; Greenhouse gases; Methane; Nitrous oxide; Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1155331/1/GreenhouseGasEmissionsChemicalPhysicalSoilAttributesEA43.2023.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154902/1/Greenhouse-gas-emissions-and-chemical-and-physical-soil-attributes-of-off-season-agricultural-production-systems-in-the-Savannah-of-Maranhao-State-Brazil-2023.pdf
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Marc: |
LEADER 02439naa a2200385 a 4500
001 2155331
005 2023-08-29
008 2023 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/1809-4430-Eng.Agric.v43n2e20220181/2023$2DOI
100 1 $aBRITO, L. de C. R.
245 $aGreenhouse gas emissions and chemical and physical soil attributes of off-season agricultural production systems in the savannah of Maranhão State, Brazil.$h[electronic resource]
260 $c2023
520 $aManagement of agricultural production systems interferes with greenhouse gases (GHG) emissions, thereby altering physical, chemical, and biological attributes of soil; therefore, it is important to understand the relationship between soil attributes and GHG emissions. This study evaluated GHG emissions and their relationship with soil attributes in off- season soybean, maize, brachiaria and eucalyptus production systems. The experiment was carried out in Brejo, Maranhão, Brazil, with soybean (Glycine max), maize (Zea mays), brachiaria (Urochloa ruzizienses), and eucalyptus (Eucalyptus grandis). Fluxes of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) were evaluated using air samples analyzed by gas chromatography. Soil attributes were ammonium and nitrate contents, total organic carbon, moisture, pH, density, total porosity, and water-filled pore space. N2O flux was 287.1 μg m-2 h -1 for eucalyptus cultivation, while areas cultivated with soybeans, maize and brachiaria had influxes of 46.7, 7.2, and 13.17 μg m-2 h-1, respectively. In the off-season, the highest emissions of N2O and CO2 were measured in eucalyptus areas due to soil moisture and porosity conditions provided by accumulation of litter on the soil surface.
650 $aCarbon dioxide
650 $aCerrado soils
650 $aGreenhouse gases
650 $aMethane
650 $aNitrous oxide
650 $aSoil
650 $aCarbono
650 $aCerrado
650 $aDióxido de Carbono
650 $aEfeito Estufa
650 $aMetano
650 $aSolo
653 $aAtributos físicos
653 $aAtributos químicos
653 $aEmissões de gases
653 $aÓxido nitroso
700 1 $aSOUZA, H. A. de
700 1 $aSIGNOR, D.
700 1 $aSOUZA, I. M. de
700 1 $aSANTOS, S. F. da C. B. dos
700 1 $aSOBRAL, A. H. S.
773 $tEngenharia Agrícola$gv. 43, n. 2, e20220181, 2023.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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Origem |
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Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
26/11/2009 |
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Data da última atualização: |
16/07/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
GOY, R. C.; BRITTO, D. de; ASSIS, O. B. G. de. |
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Afiliação: |
ODILIO BENEDITO GARRIDO DE ASSIS, CNPDIA. |
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Título: |
A review of the antimicrobial activity of chitosan. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Polímeros: ciência e tecnologia, São Carlos, v. 19, n. 3, p. 241-247, 2009. |
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Idioma: |
Inglês |
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Palavras-Chave: |
Quitosana. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/86109/1/Proci-09.00081.pdf
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Marc: |
LEADER 00409naa a2200133 a 4500
001 1576212
005 2013-07-16
008 2009 bl uuuu u00u1 u #d
100 1 $aGOY, R. C.; BRITTO, D. de
245 $aA review of the antimicrobial activity of chitosan.
260 $c2009
653 $aQuitosana
700 1 $aASSIS, O. B. G. de
773 $tPolímeros: ciência e tecnologia, São Carlos$gv. 19, n. 3, p. 241-247, 2009.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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