Tamanho de parcela para experimentação com girassol
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFERSA |
Texto Completo: | https://repositorio.ufersa.edu.br/handle/tede/79 |
Resumo: | This study aims to determine the appropriate size of field plots for field experimentation with sunflower. An experiment was conducted in randomized complete blocks design with 14 cultivars of sunflower and 10 replications. The field plots consisted of four rows of six-meter long rows, spaced 0.7 m and 0.3 m between plants, with a total area of 16.8 m2. The useful area of the plot (7.56 m2), consisting of the two central rows, was divided into 12 basic units, each one consisting of three plants in the row (0.63 m2). The production of sunflower grains obtained in basic units was grouped in order to form portions of seven kinds of five different predefined sizes. The appropriate size of the experimental plot was estimated by the following methods: a) Intraclass correlation coefficient b) Maximum modified curvature c) Segmented linear model with plateau and d) Hatheway (1961). Were also estimated the soil heterogeneity coefficient (b) and the detectable difference among treatments (d). There was a reduction in the coefficient of variation with increasing the size of the plot. The soil of the experiment showed high heterogeneity ( = 1.0585). They were estimated by the methods of the intraclass correlation coefficient, maximum modified curvature and segmented linear model with plateau, respectively, the optimal plot sizes corresponding to 2.52, 3.74 and 2.48 m2. The maximum modified curvature method presented estimate of the optimum plot size more appropriate, together with the detectable difference between means of cultivars to accurately assess the yield of sunflower grain. The plot of 3.74 m2 of useful area was considered appropriate to assess the yield of sunflower grains and it was smaller than the size generally used in researches with sunflower. Though the Hatheway method (1961), they were estimated several very aplicable plot sizes. Considering all the cultivars for the same difference to be detected among means of cultivars, the use of a portion of smaller size with the largest number of replicates required less experimental area than the larger plots with a fewer number of replications |
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Silva, Paulo Sérgio Lima ehttp://lattes.cnpq.br/9117523177339947Assis, Janilson Pinheiro dehttp://lattes.cnpq.br/6489257938942420Silva, Paulo Igor Barbosa ehttp://lattes.cnpq.br/5147909512594128Silva, Jaeveson dahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4795289P1Silva, Júlio César do Valehttp://lattes.cnpq.br/7549117961923408http://lattes.cnpq.br/0515150725587434Sousa, Roberto Pequeno de2016-08-12T19:15:26Z2014-11-182013-11-29SOUSA, Roberto Pequeno de. Size of the ground plot for experimentation with sunflower. 2013. 183 f. Dissertação (Mestrado em Agricultura Tropical) - Universidade Federal Rural do Semi-Árido, Mossoró, 2013.https://repositorio.ufersa.edu.br/handle/tede/79This study aims to determine the appropriate size of field plots for field experimentation with sunflower. An experiment was conducted in randomized complete blocks design with 14 cultivars of sunflower and 10 replications. The field plots consisted of four rows of six-meter long rows, spaced 0.7 m and 0.3 m between plants, with a total area of 16.8 m2. The useful area of the plot (7.56 m2), consisting of the two central rows, was divided into 12 basic units, each one consisting of three plants in the row (0.63 m2). The production of sunflower grains obtained in basic units was grouped in order to form portions of seven kinds of five different predefined sizes. The appropriate size of the experimental plot was estimated by the following methods: a) Intraclass correlation coefficient b) Maximum modified curvature c) Segmented linear model with plateau and d) Hatheway (1961). Were also estimated the soil heterogeneity coefficient (b) and the detectable difference among treatments (d). There was a reduction in the coefficient of variation with increasing the size of the plot. The soil of the experiment showed high heterogeneity ( = 1.0585). They were estimated by the methods of the intraclass correlation coefficient, maximum modified curvature and segmented linear model with plateau, respectively, the optimal plot sizes corresponding to 2.52, 3.74 and 2.48 m2. The maximum modified curvature method presented estimate of the optimum plot size more appropriate, together with the detectable difference between means of cultivars to accurately assess the yield of sunflower grain. The plot of 3.74 m2 of useful area was considered appropriate to assess the yield of sunflower grains and it was smaller than the size generally used in researches with sunflower. Though the Hatheway method (1961), they were estimated several very aplicable plot sizes. Considering all the cultivars for the same difference to be detected among means of cultivars, the use of a portion of smaller size with the largest number of replicates required less experimental area than the larger plots with a fewer number of replicationsO objetivo desse trabalho foi determinar o tamanho adequado de parcela para experimentação de campo com girassol. Foi realizado um experimento no delineamento em blocos completos casualizados com 14 cultivares de girassol e 10 repetições. As parcelas foram constituídas de quatro fileiras de seis metros de comprimento, espaçadas de 0,7 m e entre plantas de 0,3 m, com área total de 16,8 m2. A área útil da parcela (7,56 m2), composta das duas fileiras centrais, foi dividida em 12 unidades básicas, cada uma constituída de três plantas na fileira (0,63 m2). A produção de grãos do girassol obtida nas unidades básicas foi agrupada de modo a formar sete tipos de parcelas de cinco tamanhos diferentes pré-estabelecidos. O tamanho adequado da parcela experimental foi estimado por meio dos seguintes métodos: a) Coeficiente de correlação intraclasse; b) Máxima curvatura modificado; c) Modelo linear segmentado com platô e d) Hatheway (1961). Estimaram-se também o coeficiente de heterogeneidade do solo (b) e a diferença detectável entre tratamentos (d). Ocorreu redução do coeficiente de variação com o aumento do tamanho da parcela. O solo do experimento apresentou alta heterogeneidade ( = 1,0585). Foram estimados pelos métodos do coeficiente de correlação intraclasse, máxima curvatura modificado e modelo linear segmentado com platô, respectivamente, os tamanhos ótimos de parcela correspondentes a 2,52, 3,74 e 2,48 m2. O método da máxima curvatura modificado apresentou estimativa do tamanho ótimo da parcela mais adequado, aliado à diferença detectável entre médias de cultivares para avaliar com precisão o rendimento de grãos do girassol. Parcela 3,74 m2 de área útil foi considerada adequada para avaliação do rendimento de grãos do girassol e foi menor que o tamanho geralmente usado nas pesquisas com o girassol. Pelo método de Hatheway (1961) estimaram-se diversos tamanhos de parcelas, muitos aplicáveis. Considerando todas as cultivares, para uma mesma diferença a ser detectada entre médias de cultivares, a utilização de parcela de menor tamanho com maior número de repetições requereu menos área experimental do que parcelas maiores com menor número de repetiçõesapplication/pdfhttp://repositorio.ufersa.edu.br/retrieve/382/RobertoPS_TESE.pdf.jpgporUniversidade Federal Rural do Semi-ÁridoPrograma de Pós-Graduação em FitotecniaUFERSABRCentro de Ciências Agrárias - CCACC-BY-SAinfo:eu-repo/semantics/openAccessHelianthus annuusExperimental designIntraclass correlationMaximum curvaturePlateau modelHatheway methodHelianthus annuusPlanejamento experimentalCorrelação intraclasseMáxima curvaturaModelo platôMétodo de HathewayCNPQ::CIENCIAS AGRARIAS::AGRONOMIATamanho de parcela para experimentação com girassolSize of the ground plot for experimentation with sunflowerinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisreponame:Biblioteca Digital de Teses e Dissertações da UFERSAinstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSATEXTRobertoPS_TESE.pdf.txtRobertoPS_TESE.pdf.txtExtracted texttext/plain306044https://repositorio.ufersa.edu.br//bitstream/tede/79/3/RobertoPS_TESE.pdf.txt4fbceb6b80ae297abda20650c422b4b2MD53ORIGINALRobertoPS_TESE.pdfapplication/pdf1647938https://repositorio.ufersa.edu.br//bitstream/tede/79/1/RobertoPS_TESE.pdfdc34992c335e50d26416144e8fb502c1MD51THUMBNAILRobertoPS_TESE.pdf.jpgRobertoPS_TESE.pdf.jpgGenerated Thumbnailimage/jpeg2434https://repositorio.ufersa.edu.br//bitstream/tede/79/2/RobertoPS_TESE.pdf.jpg5be31ca6ae0430bea6dc9c69d77520edMD52tede/792022-07-11 17:50:12.95oai:repositorio.ufersa.edu.br:tede/79Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufersa.edu.br/PUBhttp://bdtd.ufersa.edu.br/oai/requestdirecaosisbi@ufersa.edu.br|| direcaosisbi@ufersa.edu.bropendoar:2022-07-11T20:50:12Biblioteca Digital de Teses e Dissertações da UFERSA - Universidade Federal Rural do Semi-Árido (UFERSA)false |
dc.title.por.fl_str_mv |
Tamanho de parcela para experimentação com girassol |
dc.title.alternative.eng.fl_str_mv |
Size of the ground plot for experimentation with sunflower |
title |
Tamanho de parcela para experimentação com girassol |
spellingShingle |
Tamanho de parcela para experimentação com girassol Sousa, Roberto Pequeno de Helianthus annuus Experimental design Intraclass correlation Maximum curvature Plateau model Hatheway method Helianthus annuus Planejamento experimental Correlação intraclasse Máxima curvatura Modelo platô Método de Hatheway CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
title_short |
Tamanho de parcela para experimentação com girassol |
title_full |
Tamanho de parcela para experimentação com girassol |
title_fullStr |
Tamanho de parcela para experimentação com girassol |
title_full_unstemmed |
Tamanho de parcela para experimentação com girassol |
title_sort |
Tamanho de parcela para experimentação com girassol |
author |
Sousa, Roberto Pequeno de |
author_facet |
Sousa, Roberto Pequeno de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Silva, Paulo Sérgio Lima e |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9117523177339947 |
dc.contributor.referee1.fl_str_mv |
Assis, Janilson Pinheiro de |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/6489257938942420 |
dc.contributor.referee2.fl_str_mv |
Silva, Paulo Igor Barbosa e |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/5147909512594128 |
dc.contributor.referee3.fl_str_mv |
Silva, Jaeveson da |
dc.contributor.referee3Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4795289P1 |
dc.contributor.referee4.fl_str_mv |
Silva, Júlio César do Vale |
dc.contributor.referee4Lattes.fl_str_mv |
http://lattes.cnpq.br/7549117961923408 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0515150725587434 |
dc.contributor.author.fl_str_mv |
Sousa, Roberto Pequeno de |
contributor_str_mv |
Silva, Paulo Sérgio Lima e Assis, Janilson Pinheiro de Silva, Paulo Igor Barbosa e Silva, Jaeveson da Silva, Júlio César do Vale |
dc.subject.eng.fl_str_mv |
Helianthus annuus Experimental design Intraclass correlation Maximum curvature Plateau model Hatheway method |
topic |
Helianthus annuus Experimental design Intraclass correlation Maximum curvature Plateau model Hatheway method Helianthus annuus Planejamento experimental Correlação intraclasse Máxima curvatura Modelo platô Método de Hatheway CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
dc.subject.por.fl_str_mv |
Helianthus annuus Planejamento experimental Correlação intraclasse Máxima curvatura Modelo platô Método de Hatheway |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
description |
This study aims to determine the appropriate size of field plots for field experimentation with sunflower. An experiment was conducted in randomized complete blocks design with 14 cultivars of sunflower and 10 replications. The field plots consisted of four rows of six-meter long rows, spaced 0.7 m and 0.3 m between plants, with a total area of 16.8 m2. The useful area of the plot (7.56 m2), consisting of the two central rows, was divided into 12 basic units, each one consisting of three plants in the row (0.63 m2). The production of sunflower grains obtained in basic units was grouped in order to form portions of seven kinds of five different predefined sizes. The appropriate size of the experimental plot was estimated by the following methods: a) Intraclass correlation coefficient b) Maximum modified curvature c) Segmented linear model with plateau and d) Hatheway (1961). Were also estimated the soil heterogeneity coefficient (b) and the detectable difference among treatments (d). There was a reduction in the coefficient of variation with increasing the size of the plot. The soil of the experiment showed high heterogeneity ( = 1.0585). They were estimated by the methods of the intraclass correlation coefficient, maximum modified curvature and segmented linear model with plateau, respectively, the optimal plot sizes corresponding to 2.52, 3.74 and 2.48 m2. The maximum modified curvature method presented estimate of the optimum plot size more appropriate, together with the detectable difference between means of cultivars to accurately assess the yield of sunflower grain. The plot of 3.74 m2 of useful area was considered appropriate to assess the yield of sunflower grains and it was smaller than the size generally used in researches with sunflower. Though the Hatheway method (1961), they were estimated several very aplicable plot sizes. Considering all the cultivars for the same difference to be detected among means of cultivars, the use of a portion of smaller size with the largest number of replicates required less experimental area than the larger plots with a fewer number of replications |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013-11-29 |
dc.date.available.fl_str_mv |
2014-11-18 |
dc.date.accessioned.fl_str_mv |
2016-08-12T19:15:26Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SOUSA, Roberto Pequeno de. Size of the ground plot for experimentation with sunflower. 2013. 183 f. Dissertação (Mestrado em Agricultura Tropical) - Universidade Federal Rural do Semi-Árido, Mossoró, 2013. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufersa.edu.br/handle/tede/79 |
identifier_str_mv |
SOUSA, Roberto Pequeno de. Size of the ground plot for experimentation with sunflower. 2013. 183 f. Dissertação (Mestrado em Agricultura Tropical) - Universidade Federal Rural do Semi-Árido, Mossoró, 2013. |
url |
https://repositorio.ufersa.edu.br/handle/tede/79 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
CC-BY-SA info:eu-repo/semantics/openAccess |
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CC-BY-SA |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Fitotecnia |
dc.publisher.initials.fl_str_mv |
UFERSA |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Centro de Ciências Agrárias - CCA |
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Universidade Federal Rural do Semi-Árido |
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UFERSA |
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