Effects of nitrogen rate, time and method of application on blast and grain yield in upland rice
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/14872 |
Resumo: | The effects of timing application methods and levels of N on the incidence of blast disease (Pyricularia oryzae Cav.) in upland rice plants (Oryza sativa L.) cv. IAC 47 and on grain yield. The treatments were five levels (0, 15, 30, 45 and 60 kg/ha) of N applied in five planting times combined with the following application methods: 1. all the N in furrow; 2. all the N brodcasted at painting time; 3. 1/3 of N brodcasted at planting + 2/3 in top dressing, 4.1/3 of N in furrow + 2/3 in top dressing. 5. all the N at panicle initiation stage. Leaf and panicle blast increased with the increasing levels of N when applied in furrow at planting time. While tiller and panicle numbers increased, 100 - grain weight and filled grains/panicle decreased with increased N levels. Grain yield increased significantly up to 35 kg/ha of N when applied at the panicle initiation, under mild drought stress. But under prolonged drought stress, yield response was negative to N broadcasted at planting time or 1/3 at planting + 2/3 in top dressing. |
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Effects of nitrogen rate, time and method of application on blast and grain yield in upland riceÉpocas, modos de aplicação e níveis de nitrogênio sobre brusone e produção de arroz de sequeiroPyricularia oryzae; Oryza sativa; nitrogen fertilizerPyricularia oryzae; Oryza sativa; adubação nitrogenadaThe effects of timing application methods and levels of N on the incidence of blast disease (Pyricularia oryzae Cav.) in upland rice plants (Oryza sativa L.) cv. IAC 47 and on grain yield. The treatments were five levels (0, 15, 30, 45 and 60 kg/ha) of N applied in five planting times combined with the following application methods: 1. all the N in furrow; 2. all the N brodcasted at painting time; 3. 1/3 of N brodcasted at planting + 2/3 in top dressing, 4.1/3 of N in furrow + 2/3 in top dressing. 5. all the N at panicle initiation stage. Leaf and panicle blast increased with the increasing levels of N when applied in furrow at planting time. While tiller and panicle numbers increased, 100 - grain weight and filled grains/panicle decreased with increased N levels. Grain yield increased significantly up to 35 kg/ha of N when applied at the panicle initiation, under mild drought stress. But under prolonged drought stress, yield response was negative to N broadcasted at planting time or 1/3 at planting + 2/3 in top dressing.Estudou-se, em três experimentos de campo, em solo de cerrado, o efeito de épocas, modos de aplicação e níveis de nitrogênio sobre a incidência de brusone (Pyricularia oryzae Cav.) em plantio de arroz (Oryza sativa L.) de sequeiro cv. IAC 47 e na produção de grãos. Os tratamentos consistiram de cinco níveis (0, 15, 30, 45 e 60 kg/ha) de N, aplicados em cinco épocas, combinadas cornos seguintes modos de aplicação: 1. todo o N no sulco, ao plantio; 2. todo o N a lanço, ao plantio; 3. 1/3 de N a lanço, ao plantio + 2/3 em cobertura; 4. 1/3 de N no sulco ao plantio + 2/3 em cobertura; e 5. todo o N ao inicio da panícula (diferenciação do primórdio floral). A intensidade de brusone nas folhas e na panícula aumentou com o aumento dos níveis de N, quando aplicado no sulco ao plantio. Enquanto o número de perfilhos e de panículas aumentou com o aumento dos níveis de N, diminuiu o peso de 100 grãos e o número de grãos por panícula. A produção de grãos aumentou significativamente até 35 kg/ha de N, quando aplicado no início da formação da panícula; em condições de seca prolongada, houve resposta negativa da produção à adubação nitrogenada aplicada a lanço ao plantio, ou de 1/3 a lanço ao plantio + 2/3 em cobertura.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSantos, Alberto Baêta dosPrabhu, Anne SitaramaAquino, Antonio Renes Lins deCarvalho, José Ruy Porto de2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/14872Pesquisa Agropecuaria Brasileira; v.21, n.7, jul. 1986; 697-707Pesquisa Agropecuária Brasileira; v.21, n.7, jul. 1986; 697-7071678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/14872/8578info:eu-repo/semantics/openAccess2014-10-28T16:52:27Zoai:ojs.seer.sct.embrapa.br:article/14872Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-10-28T16:52:27Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effects of nitrogen rate, time and method of application on blast and grain yield in upland rice Épocas, modos de aplicação e níveis de nitrogênio sobre brusone e produção de arroz de sequeiro |
title |
Effects of nitrogen rate, time and method of application on blast and grain yield in upland rice |
spellingShingle |
Effects of nitrogen rate, time and method of application on blast and grain yield in upland rice Santos, Alberto Baêta dos Pyricularia oryzae; Oryza sativa; nitrogen fertilizer Pyricularia oryzae; Oryza sativa; adubação nitrogenada |
title_short |
Effects of nitrogen rate, time and method of application on blast and grain yield in upland rice |
title_full |
Effects of nitrogen rate, time and method of application on blast and grain yield in upland rice |
title_fullStr |
Effects of nitrogen rate, time and method of application on blast and grain yield in upland rice |
title_full_unstemmed |
Effects of nitrogen rate, time and method of application on blast and grain yield in upland rice |
title_sort |
Effects of nitrogen rate, time and method of application on blast and grain yield in upland rice |
author |
Santos, Alberto Baêta dos |
author_facet |
Santos, Alberto Baêta dos Prabhu, Anne Sitarama Aquino, Antonio Renes Lins de Carvalho, José Ruy Porto de |
author_role |
author |
author2 |
Prabhu, Anne Sitarama Aquino, Antonio Renes Lins de Carvalho, José Ruy Porto de |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Santos, Alberto Baêta dos Prabhu, Anne Sitarama Aquino, Antonio Renes Lins de Carvalho, José Ruy Porto de |
dc.subject.por.fl_str_mv |
Pyricularia oryzae; Oryza sativa; nitrogen fertilizer Pyricularia oryzae; Oryza sativa; adubação nitrogenada |
topic |
Pyricularia oryzae; Oryza sativa; nitrogen fertilizer Pyricularia oryzae; Oryza sativa; adubação nitrogenada |
description |
The effects of timing application methods and levels of N on the incidence of blast disease (Pyricularia oryzae Cav.) in upland rice plants (Oryza sativa L.) cv. IAC 47 and on grain yield. The treatments were five levels (0, 15, 30, 45 and 60 kg/ha) of N applied in five planting times combined with the following application methods: 1. all the N in furrow; 2. all the N brodcasted at painting time; 3. 1/3 of N brodcasted at planting + 2/3 in top dressing, 4.1/3 of N in furrow + 2/3 in top dressing. 5. all the N at panicle initiation stage. Leaf and panicle blast increased with the increasing levels of N when applied in furrow at planting time. While tiller and panicle numbers increased, 100 - grain weight and filled grains/panicle decreased with increased N levels. Grain yield increased significantly up to 35 kg/ha of N when applied at the panicle initiation, under mild drought stress. But under prolonged drought stress, yield response was negative to N broadcasted at planting time or 1/3 at planting + 2/3 in top dressing. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
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/14872 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/14872 |
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/14872/8578 |
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.21, n.7, jul. 1986; 697-707 Pesquisa Agropecuária Brasileira; v.21, n.7, jul. 1986; 697-707 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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1793416682377576448 |