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

Detalhes bibliográficos
Autor(a) principal: PEREIRA, C. B.
Data de Publicação: 2018
Outros Autores: TESSMANN, D. J., SANTANA, R. G., CONTRERAS-SOTO, R. I., SOUZA, R. T. de, NAVES, R. de L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088898
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. Key words: Control. Epidemiology. Plasmopara viticola. Vitis vinifera.
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spelling Temporal dynamics and management of downy mildew on the table grape "BRS Vitória" in northern Paraná.ControlDiseaseGrape (BRS Vitória)BRS VitóriaSeedlessControleVideiraGrapeMíldioDoença de plantaFungoVitis ViniferaEpidemiologyDowny mildewPlasmopara viticolaFungicidesDowny 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. Key words: Control. Epidemiology. Plasmopara viticola. Vitis vinifera.Carolina Bertuzzi Pereira, Discente, Curso de Doutorado, Programa de Pós-Graduação em Agronomia, Proteção Vegetal, Universidade Estadual de Maringá, UEM, Maringá, PR, Brasil. E-mail: carol_bertuzzi@hotmail.com; Dauri José Tessmann, Prof. Dr., Departamento de Ciências Agrárias, UEM, Maringá, PR, Brasil. E-mail: djtessmann@gmail.com; Rosangela Getirana Santana, Profa Dra , Departamento de Estatística, UEM, Maringá, PR, Brasil. E-mail: rgsantana@uem.br; Rodrigo Iván Contreras-Soto, Prof. Dr. e Pesquisador, Instituto de Ciências Agronômicas, Universidad de O’Higgins, UOH, Rancagua, Chile e Centro de Estudios Avanzados en Fruticultura, CEAF, Rengo, Chile. E-mail: contrerasudec@gmail.com; REGINALDO TEODORO DE SOUZA, CNPUV; ROSEMEIRE DE LELLIS NAVES, CNPUV.PEREIRA, C. B.TESSMANN, D. J.SANTANA, R. G.CONTRERAS-SOTO, R. I.SOUZA, R. T. deNAVES, R. de L.2018-03-10T00:36:35Z2018-03-10T00:36:35Z2018-03-0920182019-04-29T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSemina: Ciências Agrárias, Londrina, v. 39, n. 1, p. 19-28, jan./fev. 2018.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088898enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2018-03-10T00:36:42Zoai:www.alice.cnptia.embrapa.br:doc/1088898Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542018-03-10T00:36:42falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542018-03-10T00:36:42Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Temporal dynamics and management of downy mildew on the table grape "BRS Vitória" in northern 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, C. B.
Control
Disease
Grape (BRS Vitória)
BRS Vitória
Seedless
Controle
Videira
Grape
Míldio
Doença de planta
Fungo
Vitis Vinifera
Epidemiology
Downy mildew
Plasmopara viticola
Fungicides
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, C. B.
author_facet PEREIRA, C. B.
TESSMANN, D. J.
SANTANA, R. G.
CONTRERAS-SOTO, R. I.
SOUZA, R. T. de
NAVES, R. de L.
author_role author
author2 TESSMANN, D. J.
SANTANA, R. G.
CONTRERAS-SOTO, R. I.
SOUZA, R. T. de
NAVES, R. de L.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Carolina Bertuzzi Pereira, Discente, Curso de Doutorado, Programa de Pós-Graduação em Agronomia, Proteção Vegetal, Universidade Estadual de Maringá, UEM, Maringá, PR, Brasil. E-mail: carol_bertuzzi@hotmail.com; Dauri José Tessmann, Prof. Dr., Departamento de Ciências Agrárias, UEM, Maringá, PR, Brasil. E-mail: djtessmann@gmail.com; Rosangela Getirana Santana, Profa Dra , Departamento de Estatística, UEM, Maringá, PR, Brasil. E-mail: rgsantana@uem.br; Rodrigo Iván Contreras-Soto, Prof. Dr. e Pesquisador, Instituto de Ciências Agronômicas, Universidad de O’Higgins, UOH, Rancagua, Chile e Centro de Estudios Avanzados en Fruticultura, CEAF, Rengo, Chile. E-mail: contrerasudec@gmail.com; REGINALDO TEODORO DE SOUZA, CNPUV; ROSEMEIRE DE LELLIS NAVES, CNPUV.
dc.contributor.author.fl_str_mv PEREIRA, C. B.
TESSMANN, D. J.
SANTANA, R. G.
CONTRERAS-SOTO, R. I.
SOUZA, R. T. de
NAVES, R. de L.
dc.subject.por.fl_str_mv Control
Disease
Grape (BRS Vitória)
BRS Vitória
Seedless
Controle
Videira
Grape
Míldio
Doença de planta
Fungo
Vitis Vinifera
Epidemiology
Downy mildew
Plasmopara viticola
Fungicides
topic Control
Disease
Grape (BRS Vitória)
BRS Vitória
Seedless
Controle
Videira
Grape
Míldio
Doença de planta
Fungo
Vitis Vinifera
Epidemiology
Downy mildew
Plasmopara viticola
Fungicides
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. Key words: Control. Epidemiology. Plasmopara viticola. Vitis vinifera.
publishDate 2018
dc.date.none.fl_str_mv 2018-03-10T00:36:35Z
2018-03-10T00:36:35Z
2018-03-09
2018
2019-04-29T11:11:11Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Semina: Ciências Agrárias, Londrina, v. 39, n. 1, p. 19-28, jan./fev. 2018.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088898
identifier_str_mv Semina: Ciências Agrárias, Londrina, v. 39, n. 1, p. 19-28, jan./fev. 2018.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088898
dc.language.iso.fl_str_mv eng
language eng
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instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
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reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
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