Sunflower yield in three different stages of artificial defoliation

Detalhes bibliográficos
Autor(a) principal: Butignol, Cesar Assis
Data de Publicação: 2014
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/15324
Resumo: In a field test conducted at Florianópolis (SC), in 1981, the effect of defoliation in sunflower plants was determined. The experiment was conducted as a 3 x 4 factorial, in completely randomized blocks, being the culture stages 3.1, 4.1 and 5.1 and the defoliation levels 0; 33,3; 66,6 and 100% the factors studied. The statistical analysis of the results showed that the number of seeds were affected by the stages 3.1 and 4.1 of defoliation, staying the same number of seeds when the defoliation was done at stage 5.1; the kernel weight decreased as the defoliation level increased, in all the three stages. Estimated yield/plant at 3.1 stage was smaller than control after 60% defoliation and any level in 4.1 and 5.1. The greatest reduction was associated with the greatest defoliation level, being the stage 4.1 the most sensible to the lost of leaf area.
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spelling Sunflower yield in three different stages of artificial defoliationRendimento de girassol em três diferentes estádios de desfolhamento artificialdamages at different stages; yield componentsdanos em diferentes estádios; componentes do rendimentoIn a field test conducted at Florianópolis (SC), in 1981, the effect of defoliation in sunflower plants was determined. The experiment was conducted as a 3 x 4 factorial, in completely randomized blocks, being the culture stages 3.1, 4.1 and 5.1 and the defoliation levels 0; 33,3; 66,6 and 100% the factors studied. The statistical analysis of the results showed that the number of seeds were affected by the stages 3.1 and 4.1 of defoliation, staying the same number of seeds when the defoliation was done at stage 5.1; the kernel weight decreased as the defoliation level increased, in all the three stages. Estimated yield/plant at 3.1 stage was smaller than control after 60% defoliation and any level in 4.1 and 5.1. The greatest reduction was associated with the greatest defoliation level, being the stage 4.1 the most sensible to the lost of leaf area.Em ensaio de campo realizado em Florianópolis, SC, em 1981, determinou-se o efeito do desfolhamento em plantas de girassol. O experimento foi conduzido como fatorial 3 x 4, no qual os fatores foram os estádios 3,1; 4,1; e 5,1 da cultura, e os níveis de desfolhamento , 0; 33,3; 66,6 e 100%. A análise estatística dos resultados mostrou que o número de aquênios foi afetado pelo desfolhamento nos estádios 3,1 e 4,1, permanecendo inalterado quando este era feito no estádio 5,1. O peso do aquênio sofreu diminuições à medida que se aumentou o nível de desfolhamento, em qualquer dos três estádios. O rendimento por planta estimado no estádio 3,1 foi menor que o da testemunha a partir de 60% de desfolhamento e com qualquer nível no 4,1 e 5,1. As maiores reduções estiveram associadas aos maiores níveis de desfolhamento. O estádio 4,1 foi o que se mostrou mais sensível à perda da área foliar.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraButignol, Cesar Assis2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15324Pesquisa Agropecuaria Brasileira; v.18, n.6, jun. 1983; 631-634Pesquisa Agropecuária Brasileira; v.18, n.6, jun. 1983; 631-6341678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15324/9172info:eu-repo/semantics/openAccess2014-04-16T18:59:25Zoai:ojs.seer.sct.embrapa.br:article/15324Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T18:59:25Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Sunflower yield in three different stages of artificial defoliation
Rendimento de girassol em três diferentes estádios de desfolhamento artificial
title Sunflower yield in three different stages of artificial defoliation
spellingShingle Sunflower yield in three different stages of artificial defoliation
Butignol, Cesar Assis
damages at different stages; yield components
danos em diferentes estádios; componentes do rendimento
title_short Sunflower yield in three different stages of artificial defoliation
title_full Sunflower yield in three different stages of artificial defoliation
title_fullStr Sunflower yield in three different stages of artificial defoliation
title_full_unstemmed Sunflower yield in three different stages of artificial defoliation
title_sort Sunflower yield in three different stages of artificial defoliation
author Butignol, Cesar Assis
author_facet Butignol, Cesar Assis
author_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Butignol, Cesar Assis
dc.subject.por.fl_str_mv damages at different stages; yield components
danos em diferentes estádios; componentes do rendimento
topic damages at different stages; yield components
danos em diferentes estádios; componentes do rendimento
description In a field test conducted at Florianópolis (SC), in 1981, the effect of defoliation in sunflower plants was determined. The experiment was conducted as a 3 x 4 factorial, in completely randomized blocks, being the culture stages 3.1, 4.1 and 5.1 and the defoliation levels 0; 33,3; 66,6 and 100% the factors studied. The statistical analysis of the results showed that the number of seeds were affected by the stages 3.1 and 4.1 of defoliation, staying the same number of seeds when the defoliation was done at stage 5.1; the kernel weight decreased as the defoliation level increased, in all the three stages. Estimated yield/plant at 3.1 stage was smaller than control after 60% defoliation and any level in 4.1 and 5.1. The greatest reduction was associated with the greatest defoliation level, being the stage 4.1 the most sensible to the lost of leaf area.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-16
dc.type.none.fl_str_mv
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://seer.sct.embrapa.br/index.php/pab/article/view/15324
url https://seer.sct.embrapa.br/index.php/pab/article/view/15324
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/15324/9172
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.18, n.6, jun. 1983; 631-634
Pesquisa Agropecuária Brasileira; v.18, n.6, jun. 1983; 631-634
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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