Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environment
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7993 |
Resumo: | The objectives of this study were to evaluate corn cultivars for efficiency in the absorption and use of nitrogen (N) levels of efficiency through the use of nitrogen in contrasting levels of this nutrient in the greenhouse. The experiment was carried out in a greenhouse and the experimental design was in randomized blocks, with 20 treatments and four replicates, in a 10 x 2 factorial arrangement. All 10 maize cultivars were represented by local varieties and commercial hybrids, and the applied N levels were 100 and 400 mg dm-3. Plots were represented by 8L pots containing 4 plants each, which were harvested in phenological stage V8. The evaluated characteristics were dry matter weight and N level of shoot and roots. The nutritional efficiency of cultivars was also evaluated. The studied cultivars had distinct characteristics concerning N use and absorption efficiency in environments of high and low nitrogen levels. The contrasting N levels allowed the occurrence of differences needed to distinguish the most efficient cultivars. Genotypes efficient for N use and responsive to its application can be selected based on the indexes used in this work. |
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Semina. Ciências Agrárias (Online) |
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Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environmentEficiência de cultivares de milho na absorção e uso de nitrogênio em ambiente de casa de vegetaçãoZea maysGreenhouseNitrogen levels.Zea maysCasa de vegetaçãoDoses de nitrogênio.5.01.00.00-9The objectives of this study were to evaluate corn cultivars for efficiency in the absorption and use of nitrogen (N) levels of efficiency through the use of nitrogen in contrasting levels of this nutrient in the greenhouse. The experiment was carried out in a greenhouse and the experimental design was in randomized blocks, with 20 treatments and four replicates, in a 10 x 2 factorial arrangement. All 10 maize cultivars were represented by local varieties and commercial hybrids, and the applied N levels were 100 and 400 mg dm-3. Plots were represented by 8L pots containing 4 plants each, which were harvested in phenological stage V8. The evaluated characteristics were dry matter weight and N level of shoot and roots. The nutritional efficiency of cultivars was also evaluated. The studied cultivars had distinct characteristics concerning N use and absorption efficiency in environments of high and low nitrogen levels. The contrasting N levels allowed the occurrence of differences needed to distinguish the most efficient cultivars. Genotypes efficient for N use and responsive to its application can be selected based on the indexes used in this work. Os objetivos deste trabalho foram avaliar cultivares de milho quanto à eficiência na absorção e uso de nitrogênio (N) através de índices de eficiência de utilização de nitrogênio, em níveis contrastantes desse nutriente em ambiente de casa de vegetação. O experimento foi conduzido em casa de vegetação e o delineamento experimental utilizado foi o de blocos casualizados, com 20 tratamentos e quatro repetições, dispostos em um esquema fatorial de 10 x 2. As 10 cultivares de milho foram representadas por variedades locais e híbridos comerciais e as doses de N aplicadas foram de 100 e 400 mg dm-3. As parcelas foram representadas por vasos de 8 L, os quais continham 4 plantas por vaso, sendo colhidas no estádio fenológico V8. As características avaliadas foram o peso de matéria seca e teor de N da parte aérea e raízes. Também foi avaliada a eficiência nutricional das cultivares. As cultivares estudadas apresentaram características distintas quanto à eficiência no uso e absorção de N nos ambientes com alto e baixo nível de nitrogênio. Os níveis contrastantes de N utilizados permitiram que ocorressem diferenças necessárias para distinguir as cultivares mais eficientes. Genótipos eficientes para uso de N e responsivos a sua aplicação podem ser selecionados pelos índices utilizados nesse trabalho.UEL2012-12-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empíricaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/799310.5433/1679-0359.2012v33n6p2125Semina: Ciências Agrárias; Vol. 33 No. 6 (2012); 2125-2136Semina: Ciências Agrárias; v. 33 n. 6 (2012); 2125-21361679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7993/11670Copyright (c) 2012 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessCarvalho, Rafael Pelloso deVon Pinho, Renzo GarciaDavide, Livia Maria Chamma2023-01-27T12:44:14Zoai:ojs.pkp.sfu.ca:article/7993Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2023-01-27T12:44:14Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environment Eficiência de cultivares de milho na absorção e uso de nitrogênio em ambiente de casa de vegetação |
title |
Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environment |
spellingShingle |
Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environment Carvalho, Rafael Pelloso de Zea mays Greenhouse Nitrogen levels. Zea mays Casa de vegetação Doses de nitrogênio. 5.01.00.00-9 |
title_short |
Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environment |
title_full |
Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environment |
title_fullStr |
Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environment |
title_full_unstemmed |
Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environment |
title_sort |
Efficiency of maize cultivars in the absorption and use of nitrogen in a greenhouse environment |
author |
Carvalho, Rafael Pelloso de |
author_facet |
Carvalho, Rafael Pelloso de Von Pinho, Renzo Garcia Davide, Livia Maria Chamma |
author_role |
author |
author2 |
Von Pinho, Renzo Garcia Davide, Livia Maria Chamma |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Carvalho, Rafael Pelloso de Von Pinho, Renzo Garcia Davide, Livia Maria Chamma |
dc.subject.por.fl_str_mv |
Zea mays Greenhouse Nitrogen levels. Zea mays Casa de vegetação Doses de nitrogênio. 5.01.00.00-9 |
topic |
Zea mays Greenhouse Nitrogen levels. Zea mays Casa de vegetação Doses de nitrogênio. 5.01.00.00-9 |
description |
The objectives of this study were to evaluate corn cultivars for efficiency in the absorption and use of nitrogen (N) levels of efficiency through the use of nitrogen in contrasting levels of this nutrient in the greenhouse. The experiment was carried out in a greenhouse and the experimental design was in randomized blocks, with 20 treatments and four replicates, in a 10 x 2 factorial arrangement. All 10 maize cultivars were represented by local varieties and commercial hybrids, and the applied N levels were 100 and 400 mg dm-3. Plots were represented by 8L pots containing 4 plants each, which were harvested in phenological stage V8. The evaluated characteristics were dry matter weight and N level of shoot and roots. The nutritional efficiency of cultivars was also evaluated. The studied cultivars had distinct characteristics concerning N use and absorption efficiency in environments of high and low nitrogen levels. The contrasting N levels allowed the occurrence of differences needed to distinguish the most efficient cultivars. Genotypes efficient for N use and responsive to its application can be selected based on the indexes used in this work. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-12-04 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa Empírica |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7993 10.5433/1679-0359.2012v33n6p2125 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7993 |
identifier_str_mv |
10.5433/1679-0359.2012v33n6p2125 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/7993/11670 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2012 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2012 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 33 No. 6 (2012); 2125-2136 Semina: Ciências Agrárias; v. 33 n. 6 (2012); 2125-2136 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306064860020736 |