Emission of nitrous oxide in flooded rice cultivation in tropical area of Brazil

Detalhes bibliográficos
Autor(a) principal: Mascarenhas, Yoná Serpa
Data de Publicação: 2020
Outros Autores: Silva, Melissa Ananias Soler da, Correchel, Vládia, Santos, Alberto Baêta dos, Carvalho, Márcia Thaís de Melo, Madari, Beáta Emöke, Coelho, Alexandre Siqueira, Gonçalves, Gustavo Melo de Oliveira, Caetano, Pedro Henrique Pereira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/26843
Resumo: The objective of this work was to evaluate the effects of nitrogen fertilizers on the N dynamics and grain yield in flooded rice (Oryza sativa) cultivation in Brazilian tropical wetland. The experiment was carried out in a randomized complete block design with six treatments, as follows: common and protected urea; topdressing application of N doses (30, 70, and 150 kg ha-1); and one control treatment, without N fertilization. Emissions of N2O-N, global warming potential (pGWP), emission factors (EF) for mineral fertilizers, grain yield, emission intensity, nitrate, ammonium, pH, and potential redox were quantified. Gas sampling was carried out in two crop seasons of rice cultivation and in one off-season. During the flooded period of the two crop seasons, N2O fluxes did not exceed 862.41 μg m-2 h-1 N2O-N; in the off-season, the fluxes varied from -52.95 to 274.34 μg m-2 h-1 N2O-N. Consistent emission peaks were observed in soil draining before harvest, when the highest rate of both N sources was used, and also in the control treatment in the off-season. Protected urea does not reduce N2O emissions or EF. Nitrogen increases the grain yield. Protected urea does not have any effect on the pGWP. The concentrations of NO3- and NH4+ in the soil are not related to N2O fluxes.
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spelling Emission of nitrous oxide in flooded rice cultivation in tropical area of BrazilEmissão de óxido nitroso em cultivo de arroz inundado em área tropical do BrasilOryza sativa; climate change; emission factor; greenhouse gases; nitrogen use efficiencyOryza sativa; mudanças climáticas; fator de emissão; gases de efeito estufa; eficiência de uso de nitrogênioThe objective of this work was to evaluate the effects of nitrogen fertilizers on the N dynamics and grain yield in flooded rice (Oryza sativa) cultivation in Brazilian tropical wetland. The experiment was carried out in a randomized complete block design with six treatments, as follows: common and protected urea; topdressing application of N doses (30, 70, and 150 kg ha-1); and one control treatment, without N fertilization. Emissions of N2O-N, global warming potential (pGWP), emission factors (EF) for mineral fertilizers, grain yield, emission intensity, nitrate, ammonium, pH, and potential redox were quantified. Gas sampling was carried out in two crop seasons of rice cultivation and in one off-season. During the flooded period of the two crop seasons, N2O fluxes did not exceed 862.41 μg m-2 h-1 N2O-N; in the off-season, the fluxes varied from -52.95 to 274.34 μg m-2 h-1 N2O-N. Consistent emission peaks were observed in soil draining before harvest, when the highest rate of both N sources was used, and also in the control treatment in the off-season. Protected urea does not reduce N2O emissions or EF. Nitrogen increases the grain yield. Protected urea does not have any effect on the pGWP. The concentrations of NO3- and NH4+ in the soil are not related to N2O fluxes.O objetivo deste trabalho foi avaliar os efeitos dos fertilizantes nitrogenados na dinâmica do N e na produtividade de arroz (Oryza sativa) inundado em áreas úmidas tropicais Brasileiras. O experimento foi realizado em delineamento de blocos ao acaso, com seis tratamentos: ureia comum e protegida; doses de N (30, 70 e 150 kg ha-1) em cobertura; e controle, sem fertilização com N. Foram quantificados emissões de N-N2O, potencial de aquecimento global (pGWP), fatores de emissão (EF) para fertilizantes minerais, rendimento de grãos, intensidade de emissão, nitrato, amônio, pH e potencial redox. As amostragens foram realizadas em duas safras e na entressafra do arroz. Durante o período de inundação das duas safras, os fluxos de N-N2O não excederam 862,41μg m2 h1; no período de entressafra, os fluxos variaram de -52,95 a 274,34 μg m-2 h-1 N-N2O. Observaram-se picos de emissão consistentes na drenagem do solo, antes da colheita, quando a dose mais alta de ambas as fontes de N foi utilizada, e também no controle na entressafra. A ureia protegida não reduz as emissões de N2O ou EF. O nitrogênio aumenta o rendimento de grãos. A ureia protegida não afeta o pGWP. As concentrações de NO3- e NH4+ no solo não estão relacionadas aos fluxos de N2O.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraConselho Nacional de Desenvolvimento Científico e TecnológicoCoordenação de Aperfeiçoamento de Pessoal de Nível SuperiorBiotechnology and Biological Sciences Research CouncilEmpresa Brasileira de Pesquisa AgropecuáriaConselho Nacional de Desenvolvimento Científico e TecnológicoCoordenação de Aperfeiçoamento de Pessoal de Nível SuperiorBiotechnology and Biological Sciences Research CouncilEmpresa Brasileira de Pesquisa AgropecuáriaMascarenhas, Yoná SerpaSilva, Melissa Ananias Soler daCorrechel, VládiaSantos, Alberto Baêta dosCarvalho, Márcia Thaís de MeloMadari, Beáta EmökeCoelho, Alexandre SiqueiraGonçalves, Gustavo Melo de OliveiraCaetano, Pedro Henrique Pereira2020-12-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/26843Pesquisa Agropecuaria Brasileira; V.55, Jan./Dec., 2020: Publicação contínua em volume anual; e01497Pesquisa Agropecuária Brasileira; V.55, Jan./Dec., 2020: Publicação contínua em volume anual; e014971678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/26843/14805Direitos autorais 2020 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2022-05-18T18:26:38Zoai:ojs.seer.sct.embrapa.br:article/26843Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2022-05-18T18:26:38Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Emission of nitrous oxide in flooded rice cultivation in tropical area of Brazil
Emissão de óxido nitroso em cultivo de arroz inundado em área tropical do Brasil
title Emission of nitrous oxide in flooded rice cultivation in tropical area of Brazil
spellingShingle Emission of nitrous oxide in flooded rice cultivation in tropical area of Brazil
Mascarenhas, Yoná Serpa
Oryza sativa; climate change; emission factor; greenhouse gases; nitrogen use efficiency
Oryza sativa; mudanças climáticas; fator de emissão; gases de efeito estufa; eficiência de uso de nitrogênio
title_short Emission of nitrous oxide in flooded rice cultivation in tropical area of Brazil
title_full Emission of nitrous oxide in flooded rice cultivation in tropical area of Brazil
title_fullStr Emission of nitrous oxide in flooded rice cultivation in tropical area of Brazil
title_full_unstemmed Emission of nitrous oxide in flooded rice cultivation in tropical area of Brazil
title_sort Emission of nitrous oxide in flooded rice cultivation in tropical area of Brazil
author Mascarenhas, Yoná Serpa
author_facet Mascarenhas, Yoná Serpa
Silva, Melissa Ananias Soler da
Correchel, Vládia
Santos, Alberto Baêta dos
Carvalho, Márcia Thaís de Melo
Madari, Beáta Emöke
Coelho, Alexandre Siqueira
Gonçalves, Gustavo Melo de Oliveira
Caetano, Pedro Henrique Pereira
author_role author
author2 Silva, Melissa Ananias Soler da
Correchel, Vládia
Santos, Alberto Baêta dos
Carvalho, Márcia Thaís de Melo
Madari, Beáta Emöke
Coelho, Alexandre Siqueira
Gonçalves, Gustavo Melo de Oliveira
Caetano, Pedro Henrique Pereira
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Conselho Nacional de Desenvolvimento Científico e Tecnológico
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Biotechnology and Biological Sciences Research Council
Empresa Brasileira de Pesquisa Agropecuária
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Biotechnology and Biological Sciences Research Council
Empresa Brasileira de Pesquisa Agropecuária
dc.contributor.author.fl_str_mv Mascarenhas, Yoná Serpa
Silva, Melissa Ananias Soler da
Correchel, Vládia
Santos, Alberto Baêta dos
Carvalho, Márcia Thaís de Melo
Madari, Beáta Emöke
Coelho, Alexandre Siqueira
Gonçalves, Gustavo Melo de Oliveira
Caetano, Pedro Henrique Pereira
dc.subject.por.fl_str_mv Oryza sativa; climate change; emission factor; greenhouse gases; nitrogen use efficiency
Oryza sativa; mudanças climáticas; fator de emissão; gases de efeito estufa; eficiência de uso de nitrogênio
topic Oryza sativa; climate change; emission factor; greenhouse gases; nitrogen use efficiency
Oryza sativa; mudanças climáticas; fator de emissão; gases de efeito estufa; eficiência de uso de nitrogênio
description The objective of this work was to evaluate the effects of nitrogen fertilizers on the N dynamics and grain yield in flooded rice (Oryza sativa) cultivation in Brazilian tropical wetland. The experiment was carried out in a randomized complete block design with six treatments, as follows: common and protected urea; topdressing application of N doses (30, 70, and 150 kg ha-1); and one control treatment, without N fertilization. Emissions of N2O-N, global warming potential (pGWP), emission factors (EF) for mineral fertilizers, grain yield, emission intensity, nitrate, ammonium, pH, and potential redox were quantified. Gas sampling was carried out in two crop seasons of rice cultivation and in one off-season. During the flooded period of the two crop seasons, N2O fluxes did not exceed 862.41 μg m-2 h-1 N2O-N; in the off-season, the fluxes varied from -52.95 to 274.34 μg m-2 h-1 N2O-N. Consistent emission peaks were observed in soil draining before harvest, when the highest rate of both N sources was used, and also in the control treatment in the off-season. Protected urea does not reduce N2O emissions or EF. Nitrogen increases the grain yield. Protected urea does not have any effect on the pGWP. The concentrations of NO3- and NH4+ in the soil are not related to N2O fluxes.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-14
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/26843
url https://seer.sct.embrapa.br/index.php/pab/article/view/26843
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/26843/14805
dc.rights.driver.fl_str_mv Direitos autorais 2020 Pesquisa Agropecuária Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2020 Pesquisa Agropecuária Brasileira
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; V.55, Jan./Dec., 2020: Publicação contínua em volume anual; e01497
Pesquisa Agropecuária Brasileira; V.55, Jan./Dec., 2020: Publicação contínua em volume anual; e01497
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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