Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and Colombia

Detalhes bibliográficos
Autor(a) principal: Contreras, Hector Augusto Sandoval
Data de Publicação: 2016
Outros Autores: Contreras, Mario Sandoval, Barzan, Renan Ribeiro, Silvestre, João Pedro, Brito, Osmar Rodrigues
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22887
Resumo: The aim of this study was to evaluate the initial growth, nitrogen (N) uptake, and agronomic efficiency after the use of N fertilizers in upland rice cultivation. The experiment was conducted in a greenhouse by using pots filled with surface-layer (0 to 20 cm) soil collected from the municipality of Jaguapitã, Paraná. The experimental design was completely randomized with 4 replications. A factorial scheme of 5 × 2 was used, in which the factors were 5 N rates (0, 25, 50, 75, and 100 kg ha-1 N) and 2 cultivars of rice (Fedearroz Lagunas [Colombian] and IAPAR- 9 [Brazilian]). The N sources tested were ammonium sulfate (Experiment I) and calcium nitrate (Experiment II). The following variables were evaluated: number of tillers per pot (NTP), dry mass of the shoots (DMS), N content in the dry mass (NCDM), and agronomic efficiency of N fertilizer (AEN). The data obtained in the experiments were evaluated using analysis of variance, and mean values were compared using Tukey’s test at 5% significance for rice cultivar effects or adjusted to polynomial regression equations for N rates. Use of calcium nitrate yielded higher values of NTP, NCDM, and AEN. The cultivar Lagunas showed higher NTP, while IAPAR-9 showed higher DMS. An increase in N rates, for both sources, resulted in the increase of NTP, DMS, and NCDM; however, AEN was decreased.
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spelling Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and ColombiaDoses de nitrogênio de fontes nítrica e amoniacal exigidas por cultivares de arroz de sequeiro originárias do Brasil e da ColômbiaAmmonium sulfateCalcium nitrateNitrogen fertilizationOryza sativaUpland.Adubação nitrogenadaOryza sativaNitrato de cálcioSulfato de amônioTerras altas.The aim of this study was to evaluate the initial growth, nitrogen (N) uptake, and agronomic efficiency after the use of N fertilizers in upland rice cultivation. The experiment was conducted in a greenhouse by using pots filled with surface-layer (0 to 20 cm) soil collected from the municipality of Jaguapitã, Paraná. The experimental design was completely randomized with 4 replications. A factorial scheme of 5 × 2 was used, in which the factors were 5 N rates (0, 25, 50, 75, and 100 kg ha-1 N) and 2 cultivars of rice (Fedearroz Lagunas [Colombian] and IAPAR- 9 [Brazilian]). The N sources tested were ammonium sulfate (Experiment I) and calcium nitrate (Experiment II). The following variables were evaluated: number of tillers per pot (NTP), dry mass of the shoots (DMS), N content in the dry mass (NCDM), and agronomic efficiency of N fertilizer (AEN). The data obtained in the experiments were evaluated using analysis of variance, and mean values were compared using Tukey’s test at 5% significance for rice cultivar effects or adjusted to polynomial regression equations for N rates. Use of calcium nitrate yielded higher values of NTP, NCDM, and AEN. The cultivar Lagunas showed higher NTP, while IAPAR-9 showed higher DMS. An increase in N rates, for both sources, resulted in the increase of NTP, DMS, and NCDM; however, AEN was decreased.O objetivo do trabalho foi avaliar o crescimento inicial, absorção e eficiência agronômica de nitrogênio em cultivares de arroz fertilizado com doses de diferentes fontes de N. Os experimentos foram conduzidos em casa de vegetação, utilizando-se vasos preenchidos com terra coletada da camada superficial de 0 a 20 cm do município de Jaguapitã, Paraná. O delineamento experimental foi o inteiramente casualizado, com quatro repetições. Os tratamentos testados resultaram de um fatorial 5 x 2, em que os fatores foram cinco doses de N (0, 25, 50, 75 e 100 kg ha-1 de N) e dois cultivares de arroz (Fedearroz Lagunas (Colombiana) e IAPAR-9 (Brasileira)). Como fontes de nitrogênio foram testadas o sulfato de amônio (experimento I) e o nitrato de cálcio (experimento II). As seguintes variáveis foram avaliadas: número de perfilhos por vaso (NPV), massa seca da parte aérea (MSPA), conteúdo de nitrogênio na massa seca (CNMS) e eficiência agronômica do nitrogênio (EAN). Os dados obtidos nos experimentos foram submetidos a análises de variância e as médias comparadas pelo teste de Tukey a 5% para o efeito de cultivares ou ajustadas a equações de regressão polinomial para o efeito de doses de N. Com relação às fontes, o uso do nitrato de cálcio proporcionou valores superiores de NPV, CNMS e EAN. A cultivar Lagunas se destaca quanto ao perfilhamento, enquanto IAPAR-9 apresenta maior produção de MSPA. O aumento nas doses de N, em ambas as fontes, eleva o NPV, a MSPA e o CNMS, porém, a EAN é reduzida.UEL2016-06-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionEmpirical ResearchPesquisa Empíricaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2288710.5433/1679-0359.2016v37n3p1267Semina: Ciências Agrárias; Vol. 37 No. 3 (2016); 1267-1276Semina: Ciências Agrárias; v. 37 n. 3 (2016); 1267-12761679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22887/18969http://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessContreras, Hector Augusto SandovalContreras, Mario SandovalBarzan, Renan RibeiroSilvestre, João PedroBrito, Osmar Rodrigues2022-12-01T15:00:51Zoai:ojs.pkp.sfu.ca:article/22887Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-12-01T15:00:51Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and Colombia
Doses de nitrogênio de fontes nítrica e amoniacal exigidas por cultivares de arroz de sequeiro originárias do Brasil e da Colômbia
title Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and Colombia
spellingShingle Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and Colombia
Contreras, Hector Augusto Sandoval
Ammonium sulfate
Calcium nitrate
Nitrogen fertilization
Oryza sativa
Upland.
Adubação nitrogenada
Oryza sativa
Nitrato de cálcio
Sulfato de amônio
Terras altas.
title_short Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and Colombia
title_full Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and Colombia
title_fullStr Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and Colombia
title_full_unstemmed Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and Colombia
title_sort Rates of nitrogen from nitric and ammoniacal sources required by upland rice genotypes originating from Brazil and Colombia
author Contreras, Hector Augusto Sandoval
author_facet Contreras, Hector Augusto Sandoval
Contreras, Mario Sandoval
Barzan, Renan Ribeiro
Silvestre, João Pedro
Brito, Osmar Rodrigues
author_role author
author2 Contreras, Mario Sandoval
Barzan, Renan Ribeiro
Silvestre, João Pedro
Brito, Osmar Rodrigues
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Contreras, Hector Augusto Sandoval
Contreras, Mario Sandoval
Barzan, Renan Ribeiro
Silvestre, João Pedro
Brito, Osmar Rodrigues
dc.subject.por.fl_str_mv Ammonium sulfate
Calcium nitrate
Nitrogen fertilization
Oryza sativa
Upland.
Adubação nitrogenada
Oryza sativa
Nitrato de cálcio
Sulfato de amônio
Terras altas.
topic Ammonium sulfate
Calcium nitrate
Nitrogen fertilization
Oryza sativa
Upland.
Adubação nitrogenada
Oryza sativa
Nitrato de cálcio
Sulfato de amônio
Terras altas.
description The aim of this study was to evaluate the initial growth, nitrogen (N) uptake, and agronomic efficiency after the use of N fertilizers in upland rice cultivation. The experiment was conducted in a greenhouse by using pots filled with surface-layer (0 to 20 cm) soil collected from the municipality of Jaguapitã, Paraná. The experimental design was completely randomized with 4 replications. A factorial scheme of 5 × 2 was used, in which the factors were 5 N rates (0, 25, 50, 75, and 100 kg ha-1 N) and 2 cultivars of rice (Fedearroz Lagunas [Colombian] and IAPAR- 9 [Brazilian]). The N sources tested were ammonium sulfate (Experiment I) and calcium nitrate (Experiment II). The following variables were evaluated: number of tillers per pot (NTP), dry mass of the shoots (DMS), N content in the dry mass (NCDM), and agronomic efficiency of N fertilizer (AEN). The data obtained in the experiments were evaluated using analysis of variance, and mean values were compared using Tukey’s test at 5% significance for rice cultivar effects or adjusted to polynomial regression equations for N rates. Use of calcium nitrate yielded higher values of NTP, NCDM, and AEN. The cultivar Lagunas showed higher NTP, while IAPAR-9 showed higher DMS. An increase in N rates, for both sources, resulted in the increase of NTP, DMS, and NCDM; however, AEN was decreased.
publishDate 2016
dc.date.none.fl_str_mv 2016-06-22
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Empirical Research
Pesquisa Empírica
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22887
10.5433/1679-0359.2016v37n3p1267
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22887
identifier_str_mv 10.5433/1679-0359.2016v37n3p1267
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22887/18969
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv 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. 37 No. 3 (2016); 1267-1276
Semina: Ciências Agrárias; v. 37 n. 3 (2016); 1267-1276
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_ 1799306074566688768

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