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Registro Completo |
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
26/10/2007 |
Data da última atualização: |
09/06/2011 |
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
Autoria: |
FREIRE, E. C.; MORELLO, C. de L.; FARIAS, F. J. C. de. |
Afiliação: |
Eleusio Curvelo Freire, Cotton Consultoria; Camilo de Lelis Morello, Embrapa Algodão; Francisco José Correira de Farias, Embrapa Algodão. |
Título: |
Melhoramento do algodoeiro no Cerrado |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: FREIRE, E. C. Algodão no Cerrado do Brasil. Brasília: Associação Brasileira dos Produtores de Algodão, 2007. |
Páginas: |
267-318 p. |
Idioma: |
Português |
Palavras-Chave: |
Melhoramento do algodão; Métodos de melhoramento. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00540naa a2200169 a 4500 001 1275933 005 2011-06-09 008 2007 bl uuuu u00u1 u #d 100 1 $aFREIRE, E. C. 245 $aMelhoramento do algodoeiro no Cerrado 260 $c2007 300 $a267-318 p. 653 $aMelhoramento do algodão 653 $aMétodos de melhoramento 700 1 $aMORELLO, C. de L. 700 1 $aFARIAS, F. J. C. de 773 $tIn: FREIRE, E. C. Algodão no Cerrado do Brasil. Brasília: Associação Brasileira dos Produtores de Algodão, 2007.
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Embrapa Algodão (CNPA) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
13/03/2012 |
Data da última atualização: |
28/09/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
METAY, A.; CHAPUIS-LARDY, L.; FINDELING, A.; OLIVER, R.; MOREIRA, J. A. A.; FELLER, C. |
Afiliação: |
INRA-CIRAD; IRD; CREED; CIRAD; JOSE ALOISIO ALVES MOREIRA, CNPMS; IRD. |
Título: |
Simulating N2O fluxes from a Brazilian cropped soil with contrasted tillage practices. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Agriculture, Ecosystems & Environment, Amsterdam, v. 140, n. 1/2, p. 255-263, Jan. 2011. |
DOI: |
10.1016/j.agee.2010.12.012 |
Idioma: |
Inglês |
Conteúdo: |
Assessing the N2O fluxes balance is a key challenge to estimate the effect of agriculture practices on greenhouse gas production. N2O fluxes remained difficult to measure on a field scale due to high spatial and temporal variability and usually low concentrations. Our work aimed at (i) characterizing by laboratory measurements soil potential N2O emissions from nitrification and denitrification and (ii) testing a modelling approach of N2O emissions that circumvents the problem of discrete measurements for two Brazilian rainfed rice cropping systems, no-tillage (NT) vs. disk tillage (DT). This latter approach consisted in the combination of 2 models: a mechanistic water transfer model and a N2O emission model, namely PASTIS and NOE. Simulations with the PASTIS + NOE approach showed for both NT and DT treatments that: (i) the soil emitted low amounts of N2O, (ii) emissions by denitrification corresponded to short periods of high N2O emissions (15 times as high as emission by nitrification), (iii) nitrification contributed to ca 35% of the total N2O emissions at the crop cycle scale, (iv) field N2O emission measurements corresponded to the low bound of simulated emissions from nitrification. |
Palavras-Chave: |
Denitrificacion. |
Thesagro: |
Nitrificação. |
Thesaurus NAL: |
Cropping systems; Models; Nitrification. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/55612/1/Simulating-N2O.pdf
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Marc: |
LEADER 01972naa a2200253 a 4500 001 1918486 005 2017-09-28 008 2011 bl uuuu u00u1 u #d 024 7 $a10.1016/j.agee.2010.12.012$2DOI 100 1 $aMETAY, A. 245 $aSimulating N2O fluxes from a Brazilian cropped soil with contrasted tillage practices.$h[electronic resource] 260 $c2011 520 $aAssessing the N2O fluxes balance is a key challenge to estimate the effect of agriculture practices on greenhouse gas production. N2O fluxes remained difficult to measure on a field scale due to high spatial and temporal variability and usually low concentrations. Our work aimed at (i) characterizing by laboratory measurements soil potential N2O emissions from nitrification and denitrification and (ii) testing a modelling approach of N2O emissions that circumvents the problem of discrete measurements for two Brazilian rainfed rice cropping systems, no-tillage (NT) vs. disk tillage (DT). This latter approach consisted in the combination of 2 models: a mechanistic water transfer model and a N2O emission model, namely PASTIS and NOE. Simulations with the PASTIS + NOE approach showed for both NT and DT treatments that: (i) the soil emitted low amounts of N2O, (ii) emissions by denitrification corresponded to short periods of high N2O emissions (15 times as high as emission by nitrification), (iii) nitrification contributed to ca 35% of the total N2O emissions at the crop cycle scale, (iv) field N2O emission measurements corresponded to the low bound of simulated emissions from nitrification. 650 $aCropping systems 650 $aModels 650 $aNitrification 650 $aNitrificação 653 $aDenitrificacion 700 1 $aCHAPUIS-LARDY, L. 700 1 $aFINDELING, A. 700 1 $aOLIVER, R. 700 1 $aMOREIRA, J. A. A. 700 1 $aFELLER, C. 773 $tAgriculture, Ecosystems & Environment, Amsterdam$gv. 140, n. 1/2, p. 255-263, Jan. 2011.
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