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Registro Completo |
Biblioteca(s): |
Embrapa Agrossilvipastoril; Embrapa Solos. |
Data corrente: |
04/06/2020 |
Data da última atualização: |
09/07/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
NASCIMENTO, A. F. do; RODRIGUES, R. de A. R.; SILVEIRA, J. G. da; SILVA, J. J. N. da; DANIEL, V. de C.; SEGATTO, E. R. |
Afiliação: |
ALEXANDRE FERREIRA DO NASCIMENTO, CPAMT; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS; JULIA GRAZIELA DA SILVEIRA, UFV; JACQUELINE JESUS NOGUEIRA DA SILVA, UFF; VAGNER DE CARVALHO DANIEL, UFMT; EDUARDO RECKERS SEGATTO, UFMT. |
Título: |
Nitrous oxide emissions from a tropical Oxisol under monocultures and an integrated system in the Southern Amazon - Brazil. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 44, e0190123, 2020. |
ISSN: |
1806-9657 |
DOI: |
https://doi.org/10.36783/18069657rbcs2019 |
Idioma: |
Inglês |
Conteúdo: |
Although agriculture and livestock systems represent important sources of N2O from the soil, they may also aid in emissions mitigation, mainly when integrated systems are taken into account, such as crop-livestock-forest, for food production. This work assessed the soil N2O emissions from a tropical Oxisol under row-crop, livestock, forest monocultures, and an integrated crop-livestock-forest system in the Southern Amazon - Brazil. Soil N2O emissions were measured using static chambers from November 2014 to October 2016 in four soil use systems [row-crop, livestock, forest, and integrated crop-livestock-forest (CLF)], and in a reference area under native forest fragment. For the whole period, the average of soil N2O fluxes was 16.9, 12.2, and 15.4 ug N2O-N m-2 h-1, to row-crop, livestock, and CLF systems, respectively, all with a similar average among them. The lowest fluxes were observed in the forest system and native forest fragment, with average fluxes of 4.0 and 6.3 ug N2O-N m-2 h-1, respectively, both lower than the agricultural systems. The largest soil N2O fluxes were observed throughout the rainy seasons in the row-crop, livestock, and CLF, mostly after N-fertilizer application to the soil surface or in the planted row. As a consequence, the cumulative emissions were greater in row-crop, livestock, and CLF systems, which in the averages of two cycles emitted respectively 1.40, 1.15, and 1.27 kg N2O-N ha-1 yr-1, all different of the forest system and native forest fragment (0.33 and 0.52 kg N2O-N ha-1 yr-1, respectively). Nitrogen fertilization and soil moisture influenced soil N2O emissions of all systems assessed in the Southern Amazon. The N2O emissions took place after both factors were met, corroborating the hole-in-the-pipe model. Even with more soil use intensification, once in the same area there were three cultures in succession during a year and perennial trees, CLF did not lead to greater N2O emissions from the soil than row-crop and livestock. Thus, CLF represents a good option for N2O mitigation for the edaphic and climatic conditions of the Southern Amazon. MenosAlthough agriculture and livestock systems represent important sources of N2O from the soil, they may also aid in emissions mitigation, mainly when integrated systems are taken into account, such as crop-livestock-forest, for food production. This work assessed the soil N2O emissions from a tropical Oxisol under row-crop, livestock, forest monocultures, and an integrated crop-livestock-forest system in the Southern Amazon - Brazil. Soil N2O emissions were measured using static chambers from November 2014 to October 2016 in four soil use systems [row-crop, livestock, forest, and integrated crop-livestock-forest (CLF)], and in a reference area under native forest fragment. For the whole period, the average of soil N2O fluxes was 16.9, 12.2, and 15.4 ug N2O-N m-2 h-1, to row-crop, livestock, and CLF systems, respectively, all with a similar average among them. The lowest fluxes were observed in the forest system and native forest fragment, with average fluxes of 4.0 and 6.3 ug N2O-N m-2 h-1, respectively, both lower than the agricultural systems. The largest soil N2O fluxes were observed throughout the rainy seasons in the row-crop, livestock, and CLF, mostly after N-fertilizer application to the soil surface or in the planted row. As a consequence, the cumulative emissions were greater in row-crop, livestock, and CLF systems, which in the averages of two cycles emitted respectively 1.40, 1.15, and 1.27 kg N2O-N ha-1 yr-1, all different of the forest system and native forest fr... Mostrar Tudo |
Palavras-Chave: |
Mato Grosso; Mitigação; Sinop-MT. |
Thesagro: |
Aquecimento; Efeito Estufa; Gás; Latossolo; Oxisol; Solo Florestal. |
Thesaurus Nal: |
Forest soils; Global warming; Greenhouse effect; Greenhouse gases; Oxisols. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/214512/1/2020-cpamt-afn-nitrous-emissions-tropical-oxisol-monocultre-integrated-system-sourthen-amazon-brazil.pdf
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Marc: |
LEADER 03207naa a2200373 a 4500 001 2123759 005 2020-07-09 008 2020 bl uuuu u00u1 u #d 022 $a1806-9657 024 7 $ahttps://doi.org/10.36783/18069657rbcs2019$2DOI 100 1 $aNASCIMENTO, A. F. do 245 $aNitrous oxide emissions from a tropical Oxisol under monocultures and an integrated system in the Southern Amazon - Brazil.$h[electronic resource] 260 $c2020 520 $aAlthough agriculture and livestock systems represent important sources of N2O from the soil, they may also aid in emissions mitigation, mainly when integrated systems are taken into account, such as crop-livestock-forest, for food production. This work assessed the soil N2O emissions from a tropical Oxisol under row-crop, livestock, forest monocultures, and an integrated crop-livestock-forest system in the Southern Amazon - Brazil. Soil N2O emissions were measured using static chambers from November 2014 to October 2016 in four soil use systems [row-crop, livestock, forest, and integrated crop-livestock-forest (CLF)], and in a reference area under native forest fragment. For the whole period, the average of soil N2O fluxes was 16.9, 12.2, and 15.4 ug N2O-N m-2 h-1, to row-crop, livestock, and CLF systems, respectively, all with a similar average among them. The lowest fluxes were observed in the forest system and native forest fragment, with average fluxes of 4.0 and 6.3 ug N2O-N m-2 h-1, respectively, both lower than the agricultural systems. The largest soil N2O fluxes were observed throughout the rainy seasons in the row-crop, livestock, and CLF, mostly after N-fertilizer application to the soil surface or in the planted row. As a consequence, the cumulative emissions were greater in row-crop, livestock, and CLF systems, which in the averages of two cycles emitted respectively 1.40, 1.15, and 1.27 kg N2O-N ha-1 yr-1, all different of the forest system and native forest fragment (0.33 and 0.52 kg N2O-N ha-1 yr-1, respectively). Nitrogen fertilization and soil moisture influenced soil N2O emissions of all systems assessed in the Southern Amazon. The N2O emissions took place after both factors were met, corroborating the hole-in-the-pipe model. Even with more soil use intensification, once in the same area there were three cultures in succession during a year and perennial trees, CLF did not lead to greater N2O emissions from the soil than row-crop and livestock. Thus, CLF represents a good option for N2O mitigation for the edaphic and climatic conditions of the Southern Amazon. 650 $aForest soils 650 $aGlobal warming 650 $aGreenhouse effect 650 $aGreenhouse gases 650 $aOxisols 650 $aAquecimento 650 $aEfeito Estufa 650 $aGás 650 $aLatossolo 650 $aOxisol 650 $aSolo Florestal 653 $aMato Grosso 653 $aMitigação 653 $aSinop-MT 700 1 $aRODRIGUES, R. de A. R. 700 1 $aSILVEIRA, J. G. da 700 1 $aSILVA, J. J. N. da 700 1 $aDANIEL, V. de C. 700 1 $aSEGATTO, E. R. 773 $tRevista Brasileira de Ciência do Solo$gv. 44, e0190123, 2020.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
03/10/2005 |
Data da última atualização: |
10/06/2022 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
DANTAS, B. F.; PEREIRA, M. S.; RIBEIRO, L. de S.; DUENHAS, L. H.; MAIA, J. L. T.; BASSOI, L. H. |
Afiliação: |
BARBARA FRANCA DANTAS, CPATSA; LUIZ HELENA DUENHAS, CPATSA; LUIS HENRIQUE BASSOI, CPATSA. |
Título: |
Utilização do medidor portátil de clorofila para quantificação de pigmentos fotossintéticos, proteína e nitrogênio em folhas de goiabeira. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE FISIOLOGIA VEGETAL, 10.; CONGRESSO LATINO AMERICANO DE FISIOLOGIA VEGETAL, 12., 2005, Recife. Anais... Recife: SBFV, 2005. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Conteúdo: |
O objetivo deste trabalho foi estabelecer uma possível correlação entre teores de N, proteínas solúveis, aminoácidos totais, pigmentos fotossintéticos e a leitura do clorofilômetro em folhas de goiabeira, como suporte a recomendações futuras da utilização do índice relativo de clorofila (IRC) para esta cultura. |
Palavras-Chave: |
Goiabeira; Medidor; Pigmento fotossintético; Quantidade. |
Thesagro: |
Folha; Goiaba; Nitrogênio; Proteína. |
Thesaurus NAL: |
Guavas; Nitrogen. |
Categoria do assunto: |
A Sistemas de Cultivo |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/32009/1/OPB46.pdf
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Marc: |
LEADER 01271nam a2200301 a 4500 001 1156095 005 2022-06-10 008 2005 bl uuuu u00u1 u #d 100 1 $aDANTAS, B. F. 245 $aUtilização do medidor portátil de clorofila para quantificação de pigmentos fotossintéticos, proteína e nitrogênio em folhas de goiabeira. 260 $aIn: CONGRESSO BRASILEIRO DE FISIOLOGIA VEGETAL, 10.; CONGRESSO LATINO AMERICANO DE FISIOLOGIA VEGETAL, 12., 2005, Recife. Anais... Recife: SBFV$c2005 300 $c1 CD-ROM. 520 $aO objetivo deste trabalho foi estabelecer uma possível correlação entre teores de N, proteínas solúveis, aminoácidos totais, pigmentos fotossintéticos e a leitura do clorofilômetro em folhas de goiabeira, como suporte a recomendações futuras da utilização do índice relativo de clorofila (IRC) para esta cultura. 650 $aGuavas 650 $aNitrogen 650 $aFolha 650 $aGoiaba 650 $aNitrogênio 650 $aProteína 653 $aGoiabeira 653 $aMedidor 653 $aPigmento fotossintético 653 $aQuantidade 700 1 $aPEREIRA, M. S. 700 1 $aRIBEIRO, L. de S. 700 1 $aDUENHAS, L. H. 700 1 $aMAIA, J. L. T. 700 1 $aBASSOI, L. H.
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