Response of two flooded rice cultivars to seeding and nitrogen rates

Detalhes bibliográficos
Autor(a) principal: Mariot, Carlos Henrique Paim
Data de Publicação: 2003
Outros Autores: Silva, Paulo Regis Ferreira da, Menezes, Valmir Gaedke, Teichmann, Leandro Leonardo
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/6566
Resumo: Many studies about seeding and nitrogen rates in flooded rice were carried out, but few works have studied these two factors altogether. The objective of this study was to evaluate the effect of seeding and nitrogen rates on grain yield and its components, in two flooded rice cultivars. The experiment was carried out in field conditions during the 1998/1999 and 1999/2000 growing seasons. Treatments consisted of the combinations of two flooded rice cultivars (BR-IRGA 410 and IRGA 417), four seeding rates (50, 100, 150, and 200 kg ha-1) and four nitrogen rates (0, 40, 80, and 120 kg ha-1) in a randomized blocks design with four replications. Grain yield in response to nitrogen fertilizer was not influenced by seeding rate, except in the lowest density, in the second year. Grain yield did not vary within the range of seeding rate tested. Nitrogen use efficiency was higher in BR-IRGA 410 cultivar than in IRGA 417 and it decreased with increment in N fertilizer.
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spelling Response of two flooded rice cultivars to seeding and nitrogen ratesResposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenadaOryza sativa; agronomic characters; grain; yield componentsOryza sativa; característica agronômica; grão; componente de rendimentoMany studies about seeding and nitrogen rates in flooded rice were carried out, but few works have studied these two factors altogether. The objective of this study was to evaluate the effect of seeding and nitrogen rates on grain yield and its components, in two flooded rice cultivars. The experiment was carried out in field conditions during the 1998/1999 and 1999/2000 growing seasons. Treatments consisted of the combinations of two flooded rice cultivars (BR-IRGA 410 and IRGA 417), four seeding rates (50, 100, 150, and 200 kg ha-1) and four nitrogen rates (0, 40, 80, and 120 kg ha-1) in a randomized blocks design with four replications. Grain yield in response to nitrogen fertilizer was not influenced by seeding rate, except in the lowest density, in the second year. Grain yield did not vary within the range of seeding rate tested. Nitrogen use efficiency was higher in BR-IRGA 410 cultivar than in IRGA 417 and it decreased with increment in N fertilizer.Diversos estudos foram realizados sobre densidade de semeadura e adubação nitrogenada em arroz irrigado, mas poucos trabalhos estudaram esses dois fatores conjuntamente. O objetivo deste trabalho foi avaliar o efeito da densidade de semeadura e da adubação nitrogenada no rendimento de grãos e nos componentes do rendimento, em duas cultivares de arroz irrigado. O experimento foi realizado no campo, durante os anos agrícolas de 1998/1999 e 1999/2000. Os tratamentos constituíram-se das combinações de duas cultivares de arroz irrigado (BR-IRGA 410 e IRGA 417), quatro densidades de semeadura (50, 100, 150 e 200 kg ha-1) e quatro níveis de nitrogênio (0, 40, 80 e 120 kg ha-1), distribuídos em blocos ao acaso, com quatro repetições. O rendimento de grãos em resposta à adubação nitrogenada não foi influenciado pela densidade de semeadura, exceto na densidade mais baixa, no segundo ano. O rendimento de grãos não variou dentro da faixa de densidade de semeadura testada. A eficiência de uso do nitrogênio foi maior na cultivar BR-IRGA 410 do que na IRGA 417 e diminuiu com o incremento da adubação nitrogenada.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMariot, Carlos Henrique PaimSilva, Paulo Regis Ferreira daMenezes, Valmir GaedkeTeichmann, Leandro Leonardo2003-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6566Pesquisa Agropecuaria Brasileira; v.38, n.2, fev. 2003; 233-241Pesquisa Agropecuária Brasileira; v.38, n.2, fev. 2003; 233-2411678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6566/3623info:eu-repo/semantics/openAccess2014-08-12T19:42:52Zoai:ojs.seer.sct.embrapa.br:article/6566Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-12T19:42:52Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Response of two flooded rice cultivars to seeding and nitrogen rates
Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada
title Response of two flooded rice cultivars to seeding and nitrogen rates
spellingShingle Response of two flooded rice cultivars to seeding and nitrogen rates
Mariot, Carlos Henrique Paim
Oryza sativa; agronomic characters; grain; yield components
Oryza sativa; característica agronômica; grão; componente de rendimento
title_short Response of two flooded rice cultivars to seeding and nitrogen rates
title_full Response of two flooded rice cultivars to seeding and nitrogen rates
title_fullStr Response of two flooded rice cultivars to seeding and nitrogen rates
title_full_unstemmed Response of two flooded rice cultivars to seeding and nitrogen rates
title_sort Response of two flooded rice cultivars to seeding and nitrogen rates
author Mariot, Carlos Henrique Paim
author_facet Mariot, Carlos Henrique Paim
Silva, Paulo Regis Ferreira da
Menezes, Valmir Gaedke
Teichmann, Leandro Leonardo
author_role author
author2 Silva, Paulo Regis Ferreira da
Menezes, Valmir Gaedke
Teichmann, Leandro Leonardo
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Mariot, Carlos Henrique Paim
Silva, Paulo Regis Ferreira da
Menezes, Valmir Gaedke
Teichmann, Leandro Leonardo
dc.subject.por.fl_str_mv Oryza sativa; agronomic characters; grain; yield components
Oryza sativa; característica agronômica; grão; componente de rendimento
topic Oryza sativa; agronomic characters; grain; yield components
Oryza sativa; característica agronômica; grão; componente de rendimento
description Many studies about seeding and nitrogen rates in flooded rice were carried out, but few works have studied these two factors altogether. The objective of this study was to evaluate the effect of seeding and nitrogen rates on grain yield and its components, in two flooded rice cultivars. The experiment was carried out in field conditions during the 1998/1999 and 1999/2000 growing seasons. Treatments consisted of the combinations of two flooded rice cultivars (BR-IRGA 410 and IRGA 417), four seeding rates (50, 100, 150, and 200 kg ha-1) and four nitrogen rates (0, 40, 80, and 120 kg ha-1) in a randomized blocks design with four replications. Grain yield in response to nitrogen fertilizer was not influenced by seeding rate, except in the lowest density, in the second year. Grain yield did not vary within the range of seeding rate tested. Nitrogen use efficiency was higher in BR-IRGA 410 cultivar than in IRGA 417 and it decreased with increment in N fertilizer.
publishDate 2003
dc.date.none.fl_str_mv 2003-02-01
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/6566
url https://seer.sct.embrapa.br/index.php/pab/article/view/6566
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/6566/3623
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.38, n.2, fev. 2003; 233-241
Pesquisa Agropecuária Brasileira; v.38, n.2, fev. 2003; 233-241
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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