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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
28/09/2022 |
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Data da última atualização: |
28/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALVAREZ, C.; ÁLVAREZ, C. R.; COSTANTINI, A. O.; ALVES, B. J. R. |
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Afiliação: |
INTA; Universidad de Buenos Aires; ALEJANDRO O. COSTANTINI, INTA; BRUNO JOSE RODRIGUES ALVES, CNPAB. |
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Título: |
Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Soil Research, Published online: 13 June 2022. |
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ISSN: |
1838-675X |
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DOI: |
https://doi.org/10.1071/SR21094 |
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Idioma: |
Inglês |
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Conteúdo: |
Context: An appropriate use of the fertiliser technology may lead to a more efficient N absorption and to the reduction of economic and environmental costs. Aims: This study sought to quantify N2O emissions generated from soil and the residual nitrate (NO3?) up to 2 m depth in field conditions in a maize crop under supplementary irrigation and fertilised with two nitrogen (N) sources (UAN and urea) at increasing N rates (0, 80, 160 and 250 kg N ha?1) in the Semi-arid Argentine Pampas. Methods: Throughout the crop cycle, emissions were monitored daily with static chambers during the first week after fertilisation; then sampling frequency was gradually reduced until the end of the experiment. Key results: There were no yield responses to the use of different sources and N rates. Crop N uptake saturated at 80 kg N ha?1, reaching 300?310 kg N ha?1. Residual NO3? increased significantly with the highest rates of N fertiliser. Total N2O emissions differed significantly only among fertiliser rates. The N2O emissions were lower at 80 than at 160 and 250 kg N ha?1. Conclusions: The N2O emissions measured were lower than those calculated by the IPCC, even when only direct emissions were considered. No grain yield increase was observed due to N fertilisation, with a non-limiting supply of N-NO3? at the beginning of the crop cycle and of N from mineralisation. Implications: This excess of N can generate negative environmental effects due to higher emissions of N2O and residual N-NO3? that can be leached. MenosContext: An appropriate use of the fertiliser technology may lead to a more efficient N absorption and to the reduction of economic and environmental costs. Aims: This study sought to quantify N2O emissions generated from soil and the residual nitrate (NO3?) up to 2 m depth in field conditions in a maize crop under supplementary irrigation and fertilised with two nitrogen (N) sources (UAN and urea) at increasing N rates (0, 80, 160 and 250 kg N ha?1) in the Semi-arid Argentine Pampas. Methods: Throughout the crop cycle, emissions were monitored daily with static chambers during the first week after fertilisation; then sampling frequency was gradually reduced until the end of the experiment. Key results: There were no yield responses to the use of different sources and N rates. Crop N uptake saturated at 80 kg N ha?1, reaching 300?310 kg N ha?1. Residual NO3? increased significantly with the highest rates of N fertiliser. Total N2O emissions differed significantly only among fertiliser rates. The N2O emissions were lower at 80 than at 160 and 250 kg N ha?1. Conclusions: The N2O emissions measured were lower than those calculated by the IPCC, even when only direct emissions were considered. No grain yield increase was observed due to N fertilisation, with a non-limiting supply of N-NO3? at the beginning of the crop cycle and of N from mineralisation. Implications: This excess of N can generate negative environmental effects due to higher emissions of N2O and residual N-NO3? th... Mostrar Tudo |
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Palavras-Chave: |
Argentinean Pampa; Environmental effects; Maize yield; Nitrate leaching. |
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Thesaurus Nal: |
Greenhouse gases; Irrigation; Urea. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02296naa a2200265 a 4500
001 2146959
005 2022-09-28
008 2022 bl uuuu u00u1 u #d
022 $a1838-675X
024 7 $ahttps://doi.org/10.1071/SR21094$2DOI
100 1 $aALVAREZ, C.
245 $aSoil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation.$h[electronic resource]
260 $c2022
520 $aContext: An appropriate use of the fertiliser technology may lead to a more efficient N absorption and to the reduction of economic and environmental costs. Aims: This study sought to quantify N2O emissions generated from soil and the residual nitrate (NO3?) up to 2 m depth in field conditions in a maize crop under supplementary irrigation and fertilised with two nitrogen (N) sources (UAN and urea) at increasing N rates (0, 80, 160 and 250 kg N ha?1) in the Semi-arid Argentine Pampas. Methods: Throughout the crop cycle, emissions were monitored daily with static chambers during the first week after fertilisation; then sampling frequency was gradually reduced until the end of the experiment. Key results: There were no yield responses to the use of different sources and N rates. Crop N uptake saturated at 80 kg N ha?1, reaching 300?310 kg N ha?1. Residual NO3? increased significantly with the highest rates of N fertiliser. Total N2O emissions differed significantly only among fertiliser rates. The N2O emissions were lower at 80 than at 160 and 250 kg N ha?1. Conclusions: The N2O emissions measured were lower than those calculated by the IPCC, even when only direct emissions were considered. No grain yield increase was observed due to N fertilisation, with a non-limiting supply of N-NO3? at the beginning of the crop cycle and of N from mineralisation. Implications: This excess of N can generate negative environmental effects due to higher emissions of N2O and residual N-NO3? that can be leached.
650 $aGreenhouse gases
650 $aIrrigation
650 $aUrea
653 $aArgentinean Pampa
653 $aEnvironmental effects
653 $aMaize yield
653 $aNitrate leaching
700 1 $aÁLVAREZ, C. R.
700 1 $aCOSTANTINI, A. O.
700 1 $aALVES, B. J. R.
773 $tSoil Research, Published online: 13 June 2022.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 12 | |
| 6. |  | GERHARDT, I. R.; GIACHETTO, P. F.; YAMAGISHI, M. E. B.; LOBO, F. P.; TEIXEIRA, J.; PENCHEL, R. M.; MISSIAGGIA, A. Comparative transcriptome analysis of eucalyptus genotypes that differ in carbon allocation. In: INTERNATIONAL PLANT & ANIMAL GENOME, 20., 2012, San Diego. Abstract... Jersey City: Scherago International, 2012. Não paginado. 1 pôster.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Florestas. |
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| 7. | | CALDEIRA, M. V. W.; WENDLING, I.; PENCHEL, R. M.; GONÇALVES, E. de O.; KRATZ, D.; TRAZZI, P. A. Principais tipos e componentes de substratos para produção de mudas de espécies florestais. In: CALDEIRA, M. V. W.; GARCIA, G. de O.; GONÇALVES, E. de O.; ARANTES, M. D. C.; FIEDLER, N. C. (Org.). Contexto e perspectivas da área florestal no Brasil. Alegre: Suprema, 2011. p. 51-100.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Florestas. |
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| 8. | | CALDEIRA, M. V. W.; WENDLING, I.; PENCHEL, R. M.; GONÇALVES, E. de O.; KRATZ, D.; TRAZZI, P. A. Propriedades de substratos para produção de mudas florestais. In: CALDEIRA, M. V. W.; GARCIA, G. de O.; GONÇALVES, E. de O.; ARANTES, M. D. C.; FIEDLER, N. C. (Org.). Contexto e perspectivas da área florestal no Brasil. Alegre: Suprema, 2011. p. 141-160.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Florestas. |
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| 9. | | GERHARDT, I. R.; GIACHETTO, P. F.; YAMAGISHI, M. E. B.; LOBO, F.; PENCHEL, R. M.; MISSIAGGIA, A. A.; ZERLOTINI, A.; SILVA, F. R. da. RNA-seq analysis of Eucalyptus genotypes that differ in carbon allocation. In: ANNUAL INTERNATIONAL CONFERENCE ON INTELLIGENT SYSTEMS FOR MOLECULAR BIOLOGY; STRUCTURAL BIOINFORMATICS AND COMPUTATIONAL BIOPHYSICS CONFERENCE MEETING, 8., 2012, Long Beach, California. Abstracts... [S.l.: s.n.], 2012. Não paginado. 1 Poster. ISMB 2012. Poster G19. Também publicado em: ANNUAL INTERNATIONAL CONFERENCE ON INTELLIGENT SYSTEMS FOR MOLECULAR BIOLOGY, 21.; EUROPEAN CONFERENCE ON COMPUTATIONAL BIOLOGY, 12., 2013, Berlin. Posters... Berlin: ISCB, 2013. Não paginado....| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital. |
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| 10. | | GERHARDT, I. R.; GIACHETTO, P. F.; YAMAGISHI, M. E. B.; LOBO, F. P.; PENCHEL, R. M.; MISSIAGGIA, A. A.; ZERLOTINI, A.; SILVA, F. R. da. RNA-seq analysis of Eucalyptus genotypes that differ in carbon allocation. In: ANNUAL INTERNATIONAL CONFERENCE ON INTELLIGENT SYSTEMS FOR MOLECULAR BIOLOGY; STRUCTURAL BIOINFORMATICS AND COMPUTATIONAL BIOPHYSICS CONFERENCE MEETING, 8., 2012, Long Beach, California. Abstracts. 1 Pôster. Poster G19.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Florestas. |
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| 11. | | GERHARDT, I. R.; GIACHETTO, P. F.; YAMAGISHI, M. E. B.; LOBO, F. P.; PENCHEL, R. M.; MISSIAGGIA, A. A.; ZERTOLINI, A.; SILVA, F. R. da. RNA-Seq Analysis of Eucalyptus Genotypes that Differ in Carbon Allocation. In: INTERNATIONAL CONFERENCE OF THE BRAZILIAN ASSOCIATION FOR BIOINFORMATICS AND COMPUTATIONAL BIOLOGY, 8., 2012, Campinas. Abstract book. [S.l.: s.n.], 2012.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 12. | | GERHARDT, I. R.; ZERLOTINI, A.; GIACHETTO, P. F.; SILVA, F. R. da; LOBO, F.; PENCHEL, R. M.; MISSIAGGIA, A. A.; ARICETTI, J. A.; GIANOTTO, A. C.; CALDANA, C. Understanding molecular mechanisms of carbon allocation in Eucalyptus. In: INTERNATIONAL CONGRESS OF PLANT MOLECULAR BIOLOGY, 11., 2015, Iguassu Falls. Papers... [S.l.: s.n.], 2015. p. 514. p. 0551. IPMB 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital. |
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| Registros recuperados : 12 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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