Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern Paraná

Detalhes bibliográficos
Autor(a) principal: Pereira, Carolina Bertuzzi
Data de Publicação: 2018
Outros Autores: Tessmann, Dauri José, Santana, Rosangela Getirana, Contreras-Soto, Rodrigo Iván, Souza, Reginaldo Teodoro de, Naves, Rosemeire de Lellis
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/27531
Resumo: Downy mildew caused by Plasmopara viticola is a major disease of grapes in Paraná State, Brazil and other wine-producing regions. The seedless table grape ‘BRS Vitória’ stands out for its tolerance to this disease and is a viable alternative to reduce fungicide applications. The objectives of this study were to analyze the influence of weather-related factors, such as temperature and rainfall on disease progress and to evaluate the efficacy of fungicide spray programs for controlling downy mildew of grapes during the summer-fall and winter-spring crop seasons in northern Paraná, Brazil. Field trials were conducted in Marialva, Paraná, during the winter-spring crop seasons (August to December) in 2013 and 2014 and the summer-fall crop seasons (January to May) in 2014 and 2015. The experimental design used was completely randomized with repeated measurements over the phenological periods, with five treatments and 10 replicates. The following treatments were compared: (1) conventional, in which fungicides were applied according to conventional standards; (2) preventive fungicide sprays every seven days; (3) preventive fungicide sprays every 14 days; (4) fungicide sprays after observing the first downy mildew symptoms; and (5) no fungicide sprays. In the conventional fungicide program, sprays were performed two or three times per week. Treatments 2 and 3 received sprayings between the start of branch budding and fruit ripening. In treatment 4, sprays started from the first occurrence of oil spot symptoms, and then, the applications were spaced every seven days until fruit ripening. The severity of disease was evaluated weekly. The disease was severe only in the 2014 and 2015 summer-fall crop seasons, reaching a maximum severity of 17.3% and 21.3% of the leaf area, respectively. The highest disease severity in the summer-fall crop seasons was associated with higher frequencies of rainy days and higher temperatures. Disease severity in conventional treatments did not differ from severity in treatments with sprayings made every seven and 14 days during the summer-fall crops in both years. Severity index on bunches were not observed for the evaluated trials. The seedless grape ‘BRS Vitória’ is less dependent on the use of fungicides to control downy mildew in northern Paraná.
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spelling Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern ParanáDinâmica temporal e manejo do míldio na uva de mesa ‘BRS Vitória’ no norte do ParanáControlEpidemiologyPlasmopara viticolaVitis vinifera.ControleEpidemiologiaPlasmopara viticolaVitis vinifera.Downy mildew caused by Plasmopara viticola is a major disease of grapes in Paraná State, Brazil and other wine-producing regions. The seedless table grape ‘BRS Vitória’ stands out for its tolerance to this disease and is a viable alternative to reduce fungicide applications. The objectives of this study were to analyze the influence of weather-related factors, such as temperature and rainfall on disease progress and to evaluate the efficacy of fungicide spray programs for controlling downy mildew of grapes during the summer-fall and winter-spring crop seasons in northern Paraná, Brazil. Field trials were conducted in Marialva, Paraná, during the winter-spring crop seasons (August to December) in 2013 and 2014 and the summer-fall crop seasons (January to May) in 2014 and 2015. The experimental design used was completely randomized with repeated measurements over the phenological periods, with five treatments and 10 replicates. The following treatments were compared: (1) conventional, in which fungicides were applied according to conventional standards; (2) preventive fungicide sprays every seven days; (3) preventive fungicide sprays every 14 days; (4) fungicide sprays after observing the first downy mildew symptoms; and (5) no fungicide sprays. In the conventional fungicide program, sprays were performed two or three times per week. Treatments 2 and 3 received sprayings between the start of branch budding and fruit ripening. In treatment 4, sprays started from the first occurrence of oil spot symptoms, and then, the applications were spaced every seven days until fruit ripening. The severity of disease was evaluated weekly. The disease was severe only in the 2014 and 2015 summer-fall crop seasons, reaching a maximum severity of 17.3% and 21.3% of the leaf area, respectively. The highest disease severity in the summer-fall crop seasons was associated with higher frequencies of rainy days and higher temperatures. Disease severity in conventional treatments did not differ from severity in treatments with sprayings made every seven and 14 days during the summer-fall crops in both years. Severity index on bunches were not observed for the evaluated trials. The seedless grape ‘BRS Vitória’ is less dependent on the use of fungicides to control downy mildew in northern Paraná.O míldio da videira causado pelo fungo Plasmopara viticola é a principal doença da videira no Paraná e em outras regiões vitícolas do país. A cultivar de uva sem sementes BRS Vitória destaca-se pela tolerância a esta doença e constitui uma alternativa viável para a produção de uva de mesa com menor emprego de fungicidas. Os objetivos deste trabalho foram analisar a influência de fatores climáticos sobre o progresso da doença e avaliar a eficácia dos programas de pulverização de fungicidas para controlar o míldio da videira durante as safras normal e temporã no norte do Paraná, Brasil. Os ensaios de campo foram conduzidos em Marialva, Paraná, durante as safras normal (agosto a dezembro) em 2013 e 2014 e safra temporã (janeiro a maio) em 2014 e 2015. O delineamento experimental utilizado foi inteiramente casualizado com medidas repetidas ao longo dos períodos fenológicos, com cinco tratamentos e 10 repetições. Os seguintes tratamentos foram comparados: (1) convencional, em que os fungicidas foram aplicados de acordo com padrões convencionais; (2) pulverizações a cada sete dias; (3) pulverizações a cada 14 dias; (4) pulverizações de fungicidas após observar os primeiros sintomas do míldio; e (5) controle. No programa convencional, as pulverizações foram realizadas duas ou três vezes por semana. Os tratamentos 2 e 3 receberam pulverizações entre o início da brotação e a maturação do fruto. No tratamento 4, as pulverizações começaram a partir da primeira ocorrência de sintomas de manchas de óleo e, em seguida, as aplicações foram espaçadas a cada sete dias até a maturação dos frutos. A severidade da doença foi avaliada semanalmente. A doença ocorreu apenas nas safras de verão e outono de 2014 e 2015, atingindo uma severidade máxima de 17,3% e 21,3% da área foliar, respectivamente. A maior severidade da doença nas safras temporãs foi associada a frequências mais altas de dias chuvosos e temperaturas mais altas. A severidade da doença nos tratamentos convencionais não diferiu da severidade nos tratamentos com as pulverizações a cada sete e 14 dias durante as colheitas das safras temporãs de ambos os anos. Não foram observados índices de severidade em cachos para os ensaios avaliados. A uva sem sementes ‘BRS Vitória’ é menos dependente do uso de fungicidas para controlar o míldio no norte do Paraná.UEL2018-02-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionseverity; damage; 'BRS' Vitóriaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2753110.5433/1679-0359.2018v39n1p19Semina: Ciências Agrárias; Vol. 39 No. 1 (2018); 19-28Semina: Ciências Agrárias; v. 39 n. 1 (2018); 19-281679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/27531/23039Copyright (c) 2018 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessPereira, Carolina BertuzziTessmann, Dauri JoséSantana, Rosangela GetiranaContreras-Soto, Rodrigo IvánSouza, Reginaldo Teodoro deNaves, Rosemeire de Lellis2022-10-21T11:47:07Zoai:ojs.pkp.sfu.ca:article/27531Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-21T11:47:07Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern Paraná
Dinâmica temporal e manejo do míldio na uva de mesa ‘BRS Vitória’ no norte do Paraná
title Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern Paraná
spellingShingle Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern Paraná
Pereira, Carolina Bertuzzi
Control
Epidemiology
Plasmopara viticola
Vitis vinifera.
Controle
Epidemiologia
Plasmopara viticola
Vitis vinifera.
title_short Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern Paraná
title_full Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern Paraná
title_fullStr Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern Paraná
title_full_unstemmed Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern Paraná
title_sort Temporal dynamics and management of downy mildew on the table grape ‘BRS Vitória’ in northern Paraná
author Pereira, Carolina Bertuzzi
author_facet Pereira, Carolina Bertuzzi
Tessmann, Dauri José
Santana, Rosangela Getirana
Contreras-Soto, Rodrigo Iván
Souza, Reginaldo Teodoro de
Naves, Rosemeire de Lellis
author_role author
author2 Tessmann, Dauri José
Santana, Rosangela Getirana
Contreras-Soto, Rodrigo Iván
Souza, Reginaldo Teodoro de
Naves, Rosemeire de Lellis
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Pereira, Carolina Bertuzzi
Tessmann, Dauri José
Santana, Rosangela Getirana
Contreras-Soto, Rodrigo Iván
Souza, Reginaldo Teodoro de
Naves, Rosemeire de Lellis
dc.subject.por.fl_str_mv Control
Epidemiology
Plasmopara viticola
Vitis vinifera.
Controle
Epidemiologia
Plasmopara viticola
Vitis vinifera.
topic Control
Epidemiology
Plasmopara viticola
Vitis vinifera.
Controle
Epidemiologia
Plasmopara viticola
Vitis vinifera.
description Downy mildew caused by Plasmopara viticola is a major disease of grapes in Paraná State, Brazil and other wine-producing regions. The seedless table grape ‘BRS Vitória’ stands out for its tolerance to this disease and is a viable alternative to reduce fungicide applications. The objectives of this study were to analyze the influence of weather-related factors, such as temperature and rainfall on disease progress and to evaluate the efficacy of fungicide spray programs for controlling downy mildew of grapes during the summer-fall and winter-spring crop seasons in northern Paraná, Brazil. Field trials were conducted in Marialva, Paraná, during the winter-spring crop seasons (August to December) in 2013 and 2014 and the summer-fall crop seasons (January to May) in 2014 and 2015. The experimental design used was completely randomized with repeated measurements over the phenological periods, with five treatments and 10 replicates. The following treatments were compared: (1) conventional, in which fungicides were applied according to conventional standards; (2) preventive fungicide sprays every seven days; (3) preventive fungicide sprays every 14 days; (4) fungicide sprays after observing the first downy mildew symptoms; and (5) no fungicide sprays. In the conventional fungicide program, sprays were performed two or three times per week. Treatments 2 and 3 received sprayings between the start of branch budding and fruit ripening. In treatment 4, sprays started from the first occurrence of oil spot symptoms, and then, the applications were spaced every seven days until fruit ripening. The severity of disease was evaluated weekly. The disease was severe only in the 2014 and 2015 summer-fall crop seasons, reaching a maximum severity of 17.3% and 21.3% of the leaf area, respectively. The highest disease severity in the summer-fall crop seasons was associated with higher frequencies of rainy days and higher temperatures. Disease severity in conventional treatments did not differ from severity in treatments with sprayings made every seven and 14 days during the summer-fall crops in both years. Severity index on bunches were not observed for the evaluated trials. The seedless grape ‘BRS Vitória’ is less dependent on the use of fungicides to control downy mildew in northern Paraná.
publishDate 2018
dc.date.none.fl_str_mv 2018-02-16
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
severity; damage; 'BRS' Vitória
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/27531
10.5433/1679-0359.2018v39n1p19
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/27531
identifier_str_mv 10.5433/1679-0359.2018v39n1p19
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/27531/23039
dc.rights.driver.fl_str_mv Copyright (c) 2018 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2018 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. 39 No. 1 (2018); 19-28
Semina: Ciências Agrárias; v. 39 n. 1 (2018); 19-28
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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