Experimental precision in competition trials of common beans and maize

Detalhes bibliográficos
Autor(a) principal: Nesi, Cristiano Nunes
Data de Publicação: 2007
Outros Autores: Hemp, Silmar, Vieira, Luís Carlos
Tipo de documento: Artigo
Idioma: por
Título da fonte: Agropecuária Catarinense (Online)
Texto Completo: https://publicacoes.epagri.sc.gov.br/rac/article/view/875
Resumo: The objective of this study was to evaluate the experimental precision and the magnitude of leastsignificant difference (LSD) from Tukey’s test as percentage of the experiment mean for the competition trials of common beans and maize in Santa Catarina, Brazil. One hundred and thirty-eight trials with beans and 325trials with maize hybrids were catalogued. All trials were conducted in completely randomized blocks, with 4 replications and 20 to 26 cultivars for common beans, and 2 to 4 replications and 5 to 49 maize cultivars. The coefficient of variation was lower than 20% (aceptable limit by the legislation) in 84,1% and 95,4% of the experiments with common beans and maize, respectively. However, the LSDs presented great magnitudes in the majority of the trials, a worrisome fact because the majority of common beans and maize cultivars already reachedhigh level of productivity with low differences among them. Because of this, some practices are necessary to reduce the least significant difference among the average of cultivars.
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spelling Experimental precision in competition trials of common beans and maizePrecisão nos ensaios de competição de cultivares de feijão e milhocoeficiente de variaçãoprecisão experimentaldiferença mínima significativa.coefficient of variationexperimental precisionleast significant differenceThe objective of this study was to evaluate the experimental precision and the magnitude of leastsignificant difference (LSD) from Tukey’s test as percentage of the experiment mean for the competition trials of common beans and maize in Santa Catarina, Brazil. One hundred and thirty-eight trials with beans and 325trials with maize hybrids were catalogued. All trials were conducted in completely randomized blocks, with 4 replications and 20 to 26 cultivars for common beans, and 2 to 4 replications and 5 to 49 maize cultivars. The coefficient of variation was lower than 20% (aceptable limit by the legislation) in 84,1% and 95,4% of the experiments with common beans and maize, respectively. However, the LSDs presented great magnitudes in the majority of the trials, a worrisome fact because the majority of common beans and maize cultivars already reachedhigh level of productivity with low differences among them. Because of this, some practices are necessary to reduce the least significant difference among the average of cultivars. O objetivo deste trabalho foi avaliar a precisão experimental e a magnitude da diferença mínima significativa (DMS) pelo método de Tukey, como porcentagem da média, para os ensaios estaduais de competição de cultivares de feijão e de milho em Santa Catarina. Foram catalogados 138 ensaios com feijão e 325 ensaios com milho. Todos os ensaios foram conduzidos em blocos completos casualizados, com quatro repetições e 20 a 26 cultivares para feijão e com duas a quatro repetições e cinco a 49 cultivares para milho. Os coeficientes de variação foram abaixo de 20% (considerado aceitável pela legislação) em 84,1% e 95,4% dos experimentos com feijão e milho, respectivamente. Entretanto, as DMSs apresentaram grandes magnitudes na maioria dos ensaios, fato preocupante pois a maioria das cultivares de feijão e milho já atingiu alta produtividade com diferenças cada vez menores. Diante disso, há necessidade de práticas que reduzam a diferença mínima significativa entre as médias de rendimento das cultivares. Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri2007-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://publicacoes.epagri.sc.gov.br/rac/article/view/875Agropecuária Catarinense Journal; Vol. 20 No. 1 (2007); 44-48Agropecuária Catarinense; v. 20 n. 1 (2007); 44-482525-60760103-0779reponame:Agropecuária Catarinense (Online)instname:Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)instacron:EPAGRIporhttps://publicacoes.epagri.sc.gov.br/rac/article/view/875/779Copyright (c) 2007 Agropecuaria catarinensehttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessNesi, Cristiano NunesHemp, SilmarVieira, Luís Carlos 2021-04-10T00:17:04Zoai:ojs.publicacoes.epagri.sc.gov.br:article/875Revistahttps://publicacoes.epagri.sc.gov.br/RAC/indexPUBhttps://publicacoes.epagri.sc.gov.br/index.php/RAC/oaieditoriarac@epagri.sc.gov.br || lamperuch@epagri.sc.gov.br2525-60760103-0779opendoar:2021-04-10T00:17:04Agropecuária Catarinense (Online) - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)false
dc.title.none.fl_str_mv Experimental precision in competition trials of common beans and maize
Precisão nos ensaios de competição de cultivares de feijão e milho
title Experimental precision in competition trials of common beans and maize
spellingShingle Experimental precision in competition trials of common beans and maize
Nesi, Cristiano Nunes
coeficiente de variação
precisão experimental
diferença mínima significativa.
coefficient of variation
experimental precision
least significant difference
title_short Experimental precision in competition trials of common beans and maize
title_full Experimental precision in competition trials of common beans and maize
title_fullStr Experimental precision in competition trials of common beans and maize
title_full_unstemmed Experimental precision in competition trials of common beans and maize
title_sort Experimental precision in competition trials of common beans and maize
author Nesi, Cristiano Nunes
author_facet Nesi, Cristiano Nunes
Hemp, Silmar
Vieira, Luís Carlos
author_role author
author2 Hemp, Silmar
Vieira, Luís Carlos
author2_role author
author
dc.contributor.author.fl_str_mv Nesi, Cristiano Nunes
Hemp, Silmar
Vieira, Luís Carlos
dc.subject.por.fl_str_mv coeficiente de variação
precisão experimental
diferença mínima significativa.
coefficient of variation
experimental precision
least significant difference
topic coeficiente de variação
precisão experimental
diferença mínima significativa.
coefficient of variation
experimental precision
least significant difference
description The objective of this study was to evaluate the experimental precision and the magnitude of leastsignificant difference (LSD) from Tukey’s test as percentage of the experiment mean for the competition trials of common beans and maize in Santa Catarina, Brazil. One hundred and thirty-eight trials with beans and 325trials with maize hybrids were catalogued. All trials were conducted in completely randomized blocks, with 4 replications and 20 to 26 cultivars for common beans, and 2 to 4 replications and 5 to 49 maize cultivars. The coefficient of variation was lower than 20% (aceptable limit by the legislation) in 84,1% and 95,4% of the experiments with common beans and maize, respectively. However, the LSDs presented great magnitudes in the majority of the trials, a worrisome fact because the majority of common beans and maize cultivars already reachedhigh level of productivity with low differences among them. Because of this, some practices are necessary to reduce the least significant difference among the average of cultivars.
publishDate 2007
dc.date.none.fl_str_mv 2007-03-01
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://publicacoes.epagri.sc.gov.br/rac/article/view/875
url https://publicacoes.epagri.sc.gov.br/rac/article/view/875
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://publicacoes.epagri.sc.gov.br/rac/article/view/875/779
dc.rights.driver.fl_str_mv Copyright (c) 2007 Agropecuaria catarinense
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2007 Agropecuaria catarinense
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri
publisher.none.fl_str_mv Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri
dc.source.none.fl_str_mv Agropecuária Catarinense Journal; Vol. 20 No. 1 (2007); 44-48
Agropecuária Catarinense; v. 20 n. 1 (2007); 44-48
2525-6076
0103-0779
reponame:Agropecuária Catarinense (Online)
instname:Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
instacron:EPAGRI
instname_str Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
instacron_str EPAGRI
institution EPAGRI
reponame_str Agropecuária Catarinense (Online)
collection Agropecuária Catarinense (Online)
repository.name.fl_str_mv Agropecuária Catarinense (Online) - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
repository.mail.fl_str_mv editoriarac@epagri.sc.gov.br || lamperuch@epagri.sc.gov.br
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