Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systems
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/7192 |
Resumo: | The objective of this work was to evaluate the NO and N2O emissions up to five days after the first nitrogen broadcasting fertilization with urea in a cornfield, in a Red Latosol, under conventional and no-tillage systems. The level of nitrogen broadcasting fertilization was of 60 kg ha-1. The experiment was conducted at Embrapa Cerrados, Planaltina, DF, Brazil, in a randomized block design, with three replications, beeing the third corn crop in rotation with soybean. NO and N2O fluxes were measured using PVC chambers installed in each plot. Higher NO fluxes were found immediately after (5.4 ng N cm-2 h-1) and three days (4.8 ng N cm-2 h-1) after N fertilization and irrigation. In the first day after fertilization, the NO emission decreased significantly to 1.9 ng N cm-2 h-1, and after five days, reached 1.2 ng N cm-2 h-1. N2O fluxes values were below the detection limit of 0.6 ng N cm-2 h-1. No significant differences in nitrogen oxides fluxes were found between plots under conventional and no-tillage systems. |
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Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systemsEmissão de óxidos de nitrogênio associada à aplicação de uréia sob plantio convencional e diretonitric oxide; nitrous oxide; nitrogen fertilization; cover crops; irrigation; Cerradoóxido nítrico; óxido nitroso; fertilização nitrogenada; plantas de cobertura, irrigação; CerradoThe objective of this work was to evaluate the NO and N2O emissions up to five days after the first nitrogen broadcasting fertilization with urea in a cornfield, in a Red Latosol, under conventional and no-tillage systems. The level of nitrogen broadcasting fertilization was of 60 kg ha-1. The experiment was conducted at Embrapa Cerrados, Planaltina, DF, Brazil, in a randomized block design, with three replications, beeing the third corn crop in rotation with soybean. NO and N2O fluxes were measured using PVC chambers installed in each plot. Higher NO fluxes were found immediately after (5.4 ng N cm-2 h-1) and three days (4.8 ng N cm-2 h-1) after N fertilization and irrigation. In the first day after fertilization, the NO emission decreased significantly to 1.9 ng N cm-2 h-1, and after five days, reached 1.2 ng N cm-2 h-1. N2O fluxes values were below the detection limit of 0.6 ng N cm-2 h-1. No significant differences in nitrogen oxides fluxes were found between plots under conventional and no-tillage systems.O objetivo deste trabalho foi avaliar emissões de NO e N2O até cinco dias após a primeira fertilização de cobertura com uréia em milho, em Latossolo Vermelho argiloso distrófico, sob plantio convencional e direto. A adubação de cobertura foi de 60 kg ha-1 de N. O experimento foi conduzido na Embrapa Cerrados, Planaltina, DF, com delineamento de blocos ao acaso, com três repetições, sendo o terceiro cultivo de milho, em rotação com soja. Os fluxos de NO e N2O foram medidos em câmaras de PVC instaladas em cada parcela. Houve emissão alta de NO imediatamente após (5,4 ng N cm-2 h-1) e no terceiro dia (4,8 ng N cm-2 h-1) após aplicação de uréia e irrigação. Um dia após fertilização, a emissão de NO reduziu-se a 1,9 ng N cm-2 h-1, e cinco dias depois, alcançou 1,2 ng N cm-2 h-1. Os fluxos de N2O ficaram abaixo do limite de detecção de 0,6 ng N cm-2 h-1. Não houve diferença significativa entre os plantios convencional e direto quanto à emissão dos óxidos de nitrogênio.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCarvalho, Arminda Moreira deBustamante, Mercedes Maria da CunhaKozovits, Alessandra RodriguesMiranda, Leo Nobre deVivaldi, Lúcio JoséSousa, Danielle Matias de2006-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/7192Pesquisa Agropecuaria Brasileira; v.41, n.4, abr. 2006; 679-685Pesquisa Agropecuária Brasileira; v.41, n.4, abr. 2006; 679-6851678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/7192/4237info:eu-repo/semantics/openAccess2010-11-17T13:06:39Zoai:ojs.seer.sct.embrapa.br:article/7192Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-11-17T13:06:39Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systems Emissão de óxidos de nitrogênio associada à aplicação de uréia sob plantio convencional e direto |
title |
Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systems |
spellingShingle |
Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systems Carvalho, Arminda Moreira de nitric oxide; nitrous oxide; nitrogen fertilization; cover crops; irrigation; Cerrado óxido nítrico; óxido nitroso; fertilização nitrogenada; plantas de cobertura, irrigação; Cerrado |
title_short |
Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systems |
title_full |
Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systems |
title_fullStr |
Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systems |
title_full_unstemmed |
Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systems |
title_sort |
Nitrogen oxides emission related to urea broadcasting fertilization under conventional and no-tillage systems |
author |
Carvalho, Arminda Moreira de |
author_facet |
Carvalho, Arminda Moreira de Bustamante, Mercedes Maria da Cunha Kozovits, Alessandra Rodrigues Miranda, Leo Nobre de Vivaldi, Lúcio José Sousa, Danielle Matias de |
author_role |
author |
author2 |
Bustamante, Mercedes Maria da Cunha Kozovits, Alessandra Rodrigues Miranda, Leo Nobre de Vivaldi, Lúcio José Sousa, Danielle Matias de |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Carvalho, Arminda Moreira de Bustamante, Mercedes Maria da Cunha Kozovits, Alessandra Rodrigues Miranda, Leo Nobre de Vivaldi, Lúcio José Sousa, Danielle Matias de |
dc.subject.por.fl_str_mv |
nitric oxide; nitrous oxide; nitrogen fertilization; cover crops; irrigation; Cerrado óxido nítrico; óxido nitroso; fertilização nitrogenada; plantas de cobertura, irrigação; Cerrado |
topic |
nitric oxide; nitrous oxide; nitrogen fertilization; cover crops; irrigation; Cerrado óxido nítrico; óxido nitroso; fertilização nitrogenada; plantas de cobertura, irrigação; Cerrado |
description |
The objective of this work was to evaluate the NO and N2O emissions up to five days after the first nitrogen broadcasting fertilization with urea in a cornfield, in a Red Latosol, under conventional and no-tillage systems. The level of nitrogen broadcasting fertilization was of 60 kg ha-1. The experiment was conducted at Embrapa Cerrados, Planaltina, DF, Brazil, in a randomized block design, with three replications, beeing the third corn crop in rotation with soybean. NO and N2O fluxes were measured using PVC chambers installed in each plot. Higher NO fluxes were found immediately after (5.4 ng N cm-2 h-1) and three days (4.8 ng N cm-2 h-1) after N fertilization and irrigation. In the first day after fertilization, the NO emission decreased significantly to 1.9 ng N cm-2 h-1, and after five days, reached 1.2 ng N cm-2 h-1. N2O fluxes values were below the detection limit of 0.6 ng N cm-2 h-1. No significant differences in nitrogen oxides fluxes were found between plots under conventional and no-tillage systems. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-04-01 |
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/7192 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/7192 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/7192/4237 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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.41, n.4, abr. 2006; 679-685 Pesquisa Agropecuária Brasileira; v.41, n.4, abr. 2006; 679-685 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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1793416716621971456 |