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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Semiárido. |
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Data corrente: |
31/03/2021 |
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Data da última atualização: |
15/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA FILHO, E. G. de; MEDEIROS, J. C.; ROSA, J. D.; SOUZA, H. A. de; SIGNOR, D.; MADARI, B. E. |
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Afiliação: |
ELIAS GOMES DE OLIVEIRA FILHO, Santa Cruz State University, Ilhéus - BA, Brazil; JOÃO CARLOS MEDEIROS, Federal University of Southern Bahia, Ilhéus-BA, Brazil; JAQUELINE DALLA ROSA, Federal University of Southern Bahia, Ilhéus-BA, Brazil; HENRIQUE ANTUNES DE SOUZA, CPAMN; DIANA SIGNOR DEON, CPATSA; BEATA EMOKE MADARI, CNPAF. |
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Título: |
Nitrous oxide (N2O) emissions in Savanah agrosystems. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Australian Journal of Crop Science, v. 14, n. 12, p. 1970-1976, 2020. |
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ISSN: |
1835-2707 |
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DOI: |
10.21475/ajcs.20.14.12.2846 |
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Idioma: |
Inglês |
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Conteúdo: |
In Brazil, 87% of N2O released into the atmosphere comes from agriculture, emphasizing the importance of assessing emissions in agricultural systems. The aim of this study was to evaluate N2O fluxes and emissions in agroecosystems and to identify how physical and chemical attributes of soil may affect the emissions. The study was carried out in the northeastern savannah (Cerrado), in an area under current agricultural expansion,in the municipality of Bom Jesus, State of Piauí. The treatments were composed of grain cultivation systems under no-tillage: exclusive soybean with biological nitrogen fixation (FBN), exclusive corn and corn intercropped with brachiaria. An adjacent area under native Cerrado was evaluated as reference ecosystem. N2O fluxes were monitored using manual static chambers between February 18 and April 22, 2017, covering the period from planting until the beginning of the harvest. Corn cultivation systems presented the highest N2O fluxes and the highest total emissions. Nitrogen fertilization significantly contributed to soil N2O fluxes as opposed to FBN. The soybean system and the native Cerrado had the lowest N2O emissions. Substantial amounts of N2O may be emitted during plant residue decomposition, however, it was not evaluated in this study.The concentrations of NH4+and NO3-available in the soil were different among the cropping systems, presenting a positive correlation with N2O fluxes. |
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Palavras-Chave: |
Fertilização com nitrogênio; Fixação biológica de N; Sistemas de cultivo. |
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Thesagro: |
Cerrado; Fertilizante Nitrogenado; Fixação de Nitrogênio; Sistema de Cultivo. |
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Thesaurus Nal: |
Cropping systems; Greenhouse gases. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/222142/1/NitrousOxideAJCSv.14n.12.2020.pdf
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Marc: |
LEADER 02370naa a2200313 a 4500
001 2130998
005 2022-09-15
008 2020 bl uuuu u00u1 u #d
022 $a1835-2707
024 7 $a10.21475/ajcs.20.14.12.2846$2DOI
100 1 $aOLIVEIRA FILHO, E. G. de
245 $aNitrous oxide (N2O) emissions in Savanah agrosystems.$h[electronic resource]
260 $c2020
520 $aIn Brazil, 87% of N2O released into the atmosphere comes from agriculture, emphasizing the importance of assessing emissions in agricultural systems. The aim of this study was to evaluate N2O fluxes and emissions in agroecosystems and to identify how physical and chemical attributes of soil may affect the emissions. The study was carried out in the northeastern savannah (Cerrado), in an area under current agricultural expansion,in the municipality of Bom Jesus, State of Piauí. The treatments were composed of grain cultivation systems under no-tillage: exclusive soybean with biological nitrogen fixation (FBN), exclusive corn and corn intercropped with brachiaria. An adjacent area under native Cerrado was evaluated as reference ecosystem. N2O fluxes were monitored using manual static chambers between February 18 and April 22, 2017, covering the period from planting until the beginning of the harvest. Corn cultivation systems presented the highest N2O fluxes and the highest total emissions. Nitrogen fertilization significantly contributed to soil N2O fluxes as opposed to FBN. The soybean system and the native Cerrado had the lowest N2O emissions. Substantial amounts of N2O may be emitted during plant residue decomposition, however, it was not evaluated in this study.The concentrations of NH4+and NO3-available in the soil were different among the cropping systems, presenting a positive correlation with N2O fluxes.
650 $aCropping systems
650 $aGreenhouse gases
650 $aCerrado
650 $aFertilizante Nitrogenado
650 $aFixação de Nitrogênio
650 $aSistema de Cultivo
653 $aFertilização com nitrogênio
653 $aFixação biológica de N
653 $aSistemas de cultivo
700 1 $aMEDEIROS, J. C.
700 1 $aROSA, J. D.
700 1 $aSOUZA, H. A. de
700 1 $aSIGNOR, D.
700 1 $aMADARI, B. E.
773 $tAustralian Journal of Crop Science$gv. 14, n. 12, p. 1970-1976, 2020.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca |
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Origem |
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Cutter |
Registro |
Volume |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Agropecuária Oeste. |
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Data corrente: |
18/12/2018 |
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Data da última atualização: |
18/12/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
FLUMIGNAN, D. L.; REZENDE, M. K. A.; COMUNELLO, E.; FIETZ, C. R. |
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Afiliação: |
DANILTON LUIZ FLUMIGNAN, CPAO; MAIARA K. A. REZENDE, DOUTORANDA - UNIVERSIDADE ESTADUAL DE MARINGÁ, MARINGÁ, PR; EDER COMUNELLO, CPAO; CARLOS RICARDO FIETZ, CPAO. |
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Título: |
Empirical methods for estimating reference surface net radiation from solar radiation. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Engenharia Agrícola, v. 38, n. 1, p. 32-37, jan./feb. 2018. |
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DOI: |
http://dx.doi.org/10.1590/1809-4430-Eng.Agric.v38n1p32-37/2018 |
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Idioma: |
Inglês |
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Palavras-Chave: |
Agrometeorologia; Estação meteorológica; Gauss Method; Método de Gauss; Método Prático; Referência. |
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Thesagro: |
Evapotranspiração; Radiação. |
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Thesaurus NAL: |
Agrometeorology; Evapotranspiration; Solar radiation; Weather stations. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/188792/1/ID-36742.pdf
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Marc: |
LEADER 00948naa a2200301 a 4500
001 2101935
005 2018-12-18
008 2018 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/1809-4430-Eng.Agric.v38n1p32-37/2018$2DOI
100 1 $aFLUMIGNAN, D. L.
245 $aEmpirical methods for estimating reference surface net radiation from solar radiation.$h[electronic resource]
260 $c2018
650 $aAgrometeorology
650 $aEvapotranspiration
650 $aSolar radiation
650 $aWeather stations
650 $aEvapotranspiração
650 $aRadiação
653 $aAgrometeorologia
653 $aEstação meteorológica
653 $aGauss Method
653 $aMétodo de Gauss
653 $aMétodo Prático
653 $aReferência
700 1 $aREZENDE, M. K. A.
700 1 $aCOMUNELLO, E.
700 1 $aFIETZ, C. R.
773 $tEngenharia Agrícola$gv. 38, n. 1, p. 32-37, jan./feb. 2018.
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Registro original: |
Embrapa Agropecuária Oeste (CPAO) |
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