Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer management
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1002/agj2.20385 http://hdl.handle.net/11449/206682 |
Resumo: | Greenhouse gases (GHGs) emissions from livestock systems are important because of their significant contribution to global warming. Nitrogen fertilization can improve system production; however, it alters soil gas emissions. We evaluated soil nitrous oxide (N2O), methane (CH4), and carbon dioxide (CO2) emissions to investigate how they are affected by increasing levels of N fertilizer (urea) in a productive Marandu grass [Urochloa brizantha (Hochst ex A. Rich) Stapf] pasture subjected to continuous grazing by young Nellore beef cattle (Bos indicus). The N2O, CH4, and CO2 emissions were significantly affected by increasing N fertilizer levels. The seasons also affected GHGs emissions. Nitrogen fertilizer favored CH4 consumption relative to the control plot without N, with mean emission of 23.7 μg CH4−C m−2 h−1 in the fertilized plots compared to 61.6 μg CH4−C m−2 h−1 in the control. The N-fertilized areas presented higher CO2 emissions compared to the control plot without N. The areas that received N fertilization showed a positive linear association between the water-filled pore space and N2O emission. Soil temperature drove CO2 emissions. Increasing N fertilization in grazed marandu grass increases N2O and CO2 emissions during the growing season, while reducing CH4. The effect of fertilization during the transition season was not apparent, and perhaps other factors could provide a better explanation for the GHG emissions during this period. |
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Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer managementGreenhouse gases (GHGs) emissions from livestock systems are important because of their significant contribution to global warming. Nitrogen fertilization can improve system production; however, it alters soil gas emissions. We evaluated soil nitrous oxide (N2O), methane (CH4), and carbon dioxide (CO2) emissions to investigate how they are affected by increasing levels of N fertilizer (urea) in a productive Marandu grass [Urochloa brizantha (Hochst ex A. Rich) Stapf] pasture subjected to continuous grazing by young Nellore beef cattle (Bos indicus). The N2O, CH4, and CO2 emissions were significantly affected by increasing N fertilizer levels. The seasons also affected GHGs emissions. Nitrogen fertilizer favored CH4 consumption relative to the control plot without N, with mean emission of 23.7 μg CH4−C m−2 h−1 in the fertilized plots compared to 61.6 μg CH4−C m−2 h−1 in the control. The N-fertilized areas presented higher CO2 emissions compared to the control plot without N. The areas that received N fertilization showed a positive linear association between the water-filled pore space and N2O emission. Soil temperature drove CO2 emissions. Increasing N fertilization in grazed marandu grass increases N2O and CO2 emissions during the growing season, while reducing CH4. The effect of fertilization during the transition season was not apparent, and perhaps other factors could provide a better explanation for the GHG emissions during this period.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Department of Animal Science Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Via de acesso Professor Paulo Donato CastellaneDepartment of Exact Science Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Via de acesso Professor Paulo Donato CastellaneDepartment of Animal Science Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Via de acesso Professor Paulo Donato CastellaneDepartment of Exact Science Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Via de acesso Professor Paulo Donato CastellaneCNPq: 118700/2017-0FAPESP: 2015/15631-3FAPESP: 2015/16631-5FAPESP: 2017/11274-5Universidade Estadual Paulista (Unesp)Raposo, Elisamara [UNESP]Brito, Liziane F. [UNESP]Janusckiewicz, Estella R. [UNESP]Oliveira, Luíza F. [UNESP]Versuti, Jonathan [UNESP]Assumpção, Fabiana M. [UNESP]Cardoso, Abmael S. [UNESP]Siniscalchi, Débora [UNESP]Delevatti, Lutti M. [UNESP]Malheiros, Euclides B. [UNESP]Reis, Ricardo A. [UNESP]Ruggieri, Ana Cláudia [UNESP]2021-06-25T10:36:25Z2021-06-25T10:36:25Z2020-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4666-4680http://dx.doi.org/10.1002/agj2.20385Agronomy Journal, v. 112, n. 6, p. 4666-4680, 2020.1435-06450002-1962http://hdl.handle.net/11449/20668210.1002/agj2.203852-s2.0-85092619762Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAgronomy Journalinfo:eu-repo/semantics/openAccess2021-10-23T10:10:56Zoai:repositorio.unesp.br:11449/206682Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T10:10:56Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer management |
title |
Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer management |
spellingShingle |
Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer management Raposo, Elisamara [UNESP] |
title_short |
Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer management |
title_full |
Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer management |
title_fullStr |
Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer management |
title_full_unstemmed |
Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer management |
title_sort |
Greenhouse gases emissions from tropical grasslands affected by nitrogen fertilizer management |
author |
Raposo, Elisamara [UNESP] |
author_facet |
Raposo, Elisamara [UNESP] Brito, Liziane F. [UNESP] Janusckiewicz, Estella R. [UNESP] Oliveira, Luíza F. [UNESP] Versuti, Jonathan [UNESP] Assumpção, Fabiana M. [UNESP] Cardoso, Abmael S. [UNESP] Siniscalchi, Débora [UNESP] Delevatti, Lutti M. [UNESP] Malheiros, Euclides B. [UNESP] Reis, Ricardo A. [UNESP] Ruggieri, Ana Cláudia [UNESP] |
author_role |
author |
author2 |
Brito, Liziane F. [UNESP] Janusckiewicz, Estella R. [UNESP] Oliveira, Luíza F. [UNESP] Versuti, Jonathan [UNESP] Assumpção, Fabiana M. [UNESP] Cardoso, Abmael S. [UNESP] Siniscalchi, Débora [UNESP] Delevatti, Lutti M. [UNESP] Malheiros, Euclides B. [UNESP] Reis, Ricardo A. [UNESP] Ruggieri, Ana Cláudia [UNESP] |
author2_role |
author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Raposo, Elisamara [UNESP] Brito, Liziane F. [UNESP] Janusckiewicz, Estella R. [UNESP] Oliveira, Luíza F. [UNESP] Versuti, Jonathan [UNESP] Assumpção, Fabiana M. [UNESP] Cardoso, Abmael S. [UNESP] Siniscalchi, Débora [UNESP] Delevatti, Lutti M. [UNESP] Malheiros, Euclides B. [UNESP] Reis, Ricardo A. [UNESP] Ruggieri, Ana Cláudia [UNESP] |
description |
Greenhouse gases (GHGs) emissions from livestock systems are important because of their significant contribution to global warming. Nitrogen fertilization can improve system production; however, it alters soil gas emissions. We evaluated soil nitrous oxide (N2O), methane (CH4), and carbon dioxide (CO2) emissions to investigate how they are affected by increasing levels of N fertilizer (urea) in a productive Marandu grass [Urochloa brizantha (Hochst ex A. Rich) Stapf] pasture subjected to continuous grazing by young Nellore beef cattle (Bos indicus). The N2O, CH4, and CO2 emissions were significantly affected by increasing N fertilizer levels. The seasons also affected GHGs emissions. Nitrogen fertilizer favored CH4 consumption relative to the control plot without N, with mean emission of 23.7 μg CH4−C m−2 h−1 in the fertilized plots compared to 61.6 μg CH4−C m−2 h−1 in the control. The N-fertilized areas presented higher CO2 emissions compared to the control plot without N. The areas that received N fertilization showed a positive linear association between the water-filled pore space and N2O emission. Soil temperature drove CO2 emissions. Increasing N fertilization in grazed marandu grass increases N2O and CO2 emissions during the growing season, while reducing CH4. The effect of fertilization during the transition season was not apparent, and perhaps other factors could provide a better explanation for the GHG emissions during this period. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-11-01 2021-06-25T10:36:25Z 2021-06-25T10:36:25Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1002/agj2.20385 Agronomy Journal, v. 112, n. 6, p. 4666-4680, 2020. 1435-0645 0002-1962 http://hdl.handle.net/11449/206682 10.1002/agj2.20385 2-s2.0-85092619762 |
url |
http://dx.doi.org/10.1002/agj2.20385 http://hdl.handle.net/11449/206682 |
identifier_str_mv |
Agronomy Journal, v. 112, n. 6, p. 4666-4680, 2020. 1435-0645 0002-1962 10.1002/agj2.20385 2-s2.0-85092619762 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Agronomy Journal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
4666-4680 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1799964378056884224 |