Plot size and number of replications in Sudan grass

Detalhes bibliográficos
Autor(a) principal: Cargnelutti Filho, Alberto
Data de Publicação: 2020
Outros Autores: Bandeira, Cirineu Tolfo, Chaves, Gabriela Görgen, Kleinpaul, Jéssica Andiara, Pezzini, Rafael Vieira, Neu, Ismael Mario Márcio, Procedi, Andréia, Thomasi, Rosana Marzari
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/35097
Resumo: The aim of this study was to determine the optimal plot size and the number of replications to evaluate fresh weight in Sudan grass [Sorghum sudanense (Piper) Stapf.]. Twenty-six uniformity trials were carried out in two cultivars (BRS Estribo and CG Farrapo), in four sowing seasons (20 Dec, 20 Jan, 7 Feb and 24 Feb) and two methods for evaluating fresh weight (cutting and at flowering). The fresh weight was evaluated in 936 basic experimental units (BEU) (26 trials × 36 BEU per trial). One BEU comprised three rows of plants, 1 m in length (1.2 m2). The optimal plot size was determined using the maximum curvature method of the model of the coefficient of variation. For experiments in a completely randomised or randomised block design, in combinations of number of treatments and levels of experimental precision, the number of replications was determined by an iterative process. The optimal plot size to evaluate fresh weight in Sudan grass is 7.95 m2. Eight replications, to evaluate up to 50 treatments in a completely randomised or randomised block design, are sufficient to identify as significant at 0.05% probability by Tukey’s test, differences between the mean value of each treatment of 30.2% of the mean value of the experiment.
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spelling Plot size and number of replications in Sudan grassTamanho de parcela e número de repetições em capim-sudãoAgricultural experimentationExperimental planningExperimental precisionSorghum sudanense (Piper) Stapf.Experimentação agrícolaPlanejamento experimentalPrecisão experimentalSorghum sudanense (Piper) Stapf.The aim of this study was to determine the optimal plot size and the number of replications to evaluate fresh weight in Sudan grass [Sorghum sudanense (Piper) Stapf.]. Twenty-six uniformity trials were carried out in two cultivars (BRS Estribo and CG Farrapo), in four sowing seasons (20 Dec, 20 Jan, 7 Feb and 24 Feb) and two methods for evaluating fresh weight (cutting and at flowering). The fresh weight was evaluated in 936 basic experimental units (BEU) (26 trials × 36 BEU per trial). One BEU comprised three rows of plants, 1 m in length (1.2 m2). The optimal plot size was determined using the maximum curvature method of the model of the coefficient of variation. For experiments in a completely randomised or randomised block design, in combinations of number of treatments and levels of experimental precision, the number of replications was determined by an iterative process. The optimal plot size to evaluate fresh weight in Sudan grass is 7.95 m2. Eight replications, to evaluate up to 50 treatments in a completely randomised or randomised block design, are sufficient to identify as significant at 0.05% probability by Tukey’s test, differences between the mean value of each treatment of 30.2% of the mean value of the experiment.Os objetivos deste trabalho foram determinar o tamanho ótimo de parcela e o número de repetições, para avaliar a massa de matéria fresca de capim-sudão [Sorghum sudanense (Piper) Stapf.]. Foram realizados 26 ensaios de uniformidade com duas cultivares (BRS Estribo e CG Farrapo), em quatro épocas de semeadura (20 de dezembro; 20 de janeiro; 7 de fevereiro; e 24 de fevereiro) e sob duas formas de avaliação da massa de matéria fresca (em cortes e somente no florescimento). A massa de matéria fresca foi avaliada em 936 unidades experimentais básicas (UEB) (26 ensaios × 36 UEB por ensaio). A UEB foi formada por três fileiras de plantas com 1 m de comprimento (1,2 m2). O tamanho ótimo de parcela foi determinado por meio do método da curvatura máxima do modelo do coeficiente de variação. O número de repetições, para experimentos nos delineamentos inteiramente casualizado e blocos casualizados, em combinações de número de tratamentos e níveis de precisão experimental, foi determinado por processo iterativo. O tamanho ótimo de parcela para avaliar a massa de matéria fresca de capim-sudão é 7,95 m2. Oito repetições, para avaliar até 50 tratamentos, nos delineamentos inteiramente casualizado e blocos casualizados, são suficientes para identificar, como significativas a 0,05 de probabilidade, pelo teste de Tukey, diferenças entre médias de tratamentos de 30,2% da média do experimento.UEL2020-04-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3509710.5433/1679-0359.2020v41n3p783Semina: Ciências Agrárias; Vol. 41 No. 3 (2020); 783-796Semina: Ciências Agrárias; v. 41 n. 3 (2020); 783-7961679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/35097/27070Copyright (c) 2020 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessCargnelutti Filho, AlbertoBandeira, Cirineu TolfoChaves, Gabriela GörgenKleinpaul, Jéssica AndiaraPezzini, Rafael VieiraNeu, Ismael Mario MárcioProcedi, AndréiaThomasi, Rosana Marzari2022-10-10T11:59:00Zoai:ojs.pkp.sfu.ca:article/35097Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-10T11:59Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Plot size and number of replications in Sudan grass
Tamanho de parcela e número de repetições em capim-sudão
title Plot size and number of replications in Sudan grass
spellingShingle Plot size and number of replications in Sudan grass
Cargnelutti Filho, Alberto
Agricultural experimentation
Experimental planning
Experimental precision
Sorghum sudanense (Piper) Stapf.
Experimentação agrícola
Planejamento experimental
Precisão experimental
Sorghum sudanense (Piper) Stapf.
title_short Plot size and number of replications in Sudan grass
title_full Plot size and number of replications in Sudan grass
title_fullStr Plot size and number of replications in Sudan grass
title_full_unstemmed Plot size and number of replications in Sudan grass
title_sort Plot size and number of replications in Sudan grass
author Cargnelutti Filho, Alberto
author_facet Cargnelutti Filho, Alberto
Bandeira, Cirineu Tolfo
Chaves, Gabriela Görgen
Kleinpaul, Jéssica Andiara
Pezzini, Rafael Vieira
Neu, Ismael Mario Márcio
Procedi, Andréia
Thomasi, Rosana Marzari
author_role author
author2 Bandeira, Cirineu Tolfo
Chaves, Gabriela Görgen
Kleinpaul, Jéssica Andiara
Pezzini, Rafael Vieira
Neu, Ismael Mario Márcio
Procedi, Andréia
Thomasi, Rosana Marzari
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Cargnelutti Filho, Alberto
Bandeira, Cirineu Tolfo
Chaves, Gabriela Görgen
Kleinpaul, Jéssica Andiara
Pezzini, Rafael Vieira
Neu, Ismael Mario Márcio
Procedi, Andréia
Thomasi, Rosana Marzari
dc.subject.por.fl_str_mv Agricultural experimentation
Experimental planning
Experimental precision
Sorghum sudanense (Piper) Stapf.
Experimentação agrícola
Planejamento experimental
Precisão experimental
Sorghum sudanense (Piper) Stapf.
topic Agricultural experimentation
Experimental planning
Experimental precision
Sorghum sudanense (Piper) Stapf.
Experimentação agrícola
Planejamento experimental
Precisão experimental
Sorghum sudanense (Piper) Stapf.
description The aim of this study was to determine the optimal plot size and the number of replications to evaluate fresh weight in Sudan grass [Sorghum sudanense (Piper) Stapf.]. Twenty-six uniformity trials were carried out in two cultivars (BRS Estribo and CG Farrapo), in four sowing seasons (20 Dec, 20 Jan, 7 Feb and 24 Feb) and two methods for evaluating fresh weight (cutting and at flowering). The fresh weight was evaluated in 936 basic experimental units (BEU) (26 trials × 36 BEU per trial). One BEU comprised three rows of plants, 1 m in length (1.2 m2). The optimal plot size was determined using the maximum curvature method of the model of the coefficient of variation. For experiments in a completely randomised or randomised block design, in combinations of number of treatments and levels of experimental precision, the number of replications was determined by an iterative process. The optimal plot size to evaluate fresh weight in Sudan grass is 7.95 m2. Eight replications, to evaluate up to 50 treatments in a completely randomised or randomised block design, are sufficient to identify as significant at 0.05% probability by Tukey’s test, differences between the mean value of each treatment of 30.2% of the mean value of the experiment.
publishDate 2020
dc.date.none.fl_str_mv 2020-04-07
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/35097
10.5433/1679-0359.2020v41n3p783
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/35097
identifier_str_mv 10.5433/1679-0359.2020v41n3p783
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/35097/27070
dc.rights.driver.fl_str_mv Copyright (c) 2020 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 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. 41 No. 3 (2020); 783-796
Semina: Ciências Agrárias; v. 41 n. 3 (2020); 783-796
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
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