Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/95544 |
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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Mariot, Carlos Henrique PaimSilva, Paulo Regis Ferreira daMenezes, Valmir GaedkeTeichmann, Leandro Leonardo2014-05-23T02:04:54Z20030100-204Xhttp://hdl.handle.net/10183/95544000383415Many 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.application/pdfporPequisa Agropecuária Brasileira: 1977. Brasília. Vol. 38, n. 2 (fev. 2003), p. 233-241Arroz irrigadoAdubaçãoNitrogênioOryza sativaagronomic charactersgrainyield componentsResposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenadainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000383415.pdf000383415.pdfTexto completoapplication/pdf174020http://www.lume.ufrgs.br/bitstream/10183/95544/1/000383415.pdfa42a5ab6e6b68b1ced96db65249fdf14MD51TEXT000383415.pdf.txt000383415.pdf.txtExtracted Texttext/plain34194http://www.lume.ufrgs.br/bitstream/10183/95544/2/000383415.pdf.txt78660f166c6d2bfacb0cb3ab87245912MD52THUMBNAIL000383415.pdf.jpg000383415.pdf.jpgGenerated Thumbnailimage/jpeg1491http://www.lume.ufrgs.br/bitstream/10183/95544/3/000383415.pdf.jpg63ca5296f97b3c33d2e93bd18a9df6d1MD5310183/955442019-01-17 04:25:21.316144oai:www.lume.ufrgs.br:10183/95544Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2019-01-17T06:25:21Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada |
title |
Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada |
spellingShingle |
Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada Mariot, Carlos Henrique Paim Arroz irrigado Adubação Nitrogênio Oryza sativa agronomic characters grain yield components |
title_short |
Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada |
title_full |
Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada |
title_fullStr |
Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada |
title_full_unstemmed |
Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada |
title_sort |
Resposta de duas cultivares de arroz irrigado à densidade de semeadura e à adubação nitrogenada |
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.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 |
Arroz irrigado Adubação Nitrogênio |
topic |
Arroz irrigado Adubação Nitrogênio Oryza sativa agronomic characters grain yield components |
dc.subject.eng.fl_str_mv |
Oryza sativa agronomic characters grain yield components |
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.issued.fl_str_mv |
2003 |
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2014-05-23T02:04:54Z |
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Pequisa Agropecuária Brasileira: 1977. Brasília. Vol. 38, n. 2 (fev. 2003), p. 233-241 |
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