Risco climático para ocorrência de doenças fúngicas da videira no Sul e Sudeste do Brasil

Shimano, Iris Satie Hayashi; Sentelhas, Paulo César

doi:10.1590/s1806-66902013000300015

Cited by 5 publications

(5 citation statements)

References 7 publications

(4 reference statements)

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“…This demonstrates that streamlining the control of fungal diseases is necessary to reduce the risks of contamination of the environment, of the producers and the final consumer. These results corroborate with those obtained by Shimano and Sentelhas (2013) when determining the climatic risk of occurrence of fungal diseases in different producing regions of the South and Southeast of Brazil, using the same model of spraying prediction based on the occurrence of rainfall. The authors demonstrated that the occurrence risk of these diseases varies according to the climate and that the monitoring of the meteorological conditions can help to the rational recommendation of sprayings for the control of fungal diseases in the Vitis labrusca grapevine.…”

Section: Resultssupporting

confidence: 88%

“…Regarding data analyses of the annual and average values of CR, this variable was classified into four classes according to the following intervals, proposed by Shimano and Sentelhas, (2013): Low < 20% (L); Moderate, between 21 and 40% (Mo); High, between 41 and 60% (H); and Very High > 60% (VH). All calculations, statistical analysis, and graph confection were elaborated using Excel electronic spreadsheet and open source program R (R Core Team, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Climatic Risk Favorability of Grapevine Fungal Disease Occurrence for Santa Teresa, Espírito Santo State, Brazil

Rodrigues¹,

Oliveira²,

Alves³

et al. 2019

JAS

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The State of Espírito Santo, Brazil, has micro-regions with different climatic and soil conditions, which promote grapevine cultivation vine in several municipalities. However, the grape production process is strongly threatened by foliar fungal diseases, and its control increases the cost of production significantly. In turn, the use of models of prediction of disease occurrence allows the identification of regions with climatic risk potential for grapevine. Hence, the objective of this work was to analyze the agro-climatic favorability of climatic risk for occurrence of fungal diseases of downy mildew (Plasmopara viticola) and Botrytis cinerea on the grapevine for the municipality of Santa Teresa, in the state of Espírito Santo. Predictive models of favorability of downy mildew and B. cinerea were used. The number of sprayings was determined by the calendar system and by the rainfall system, according to the length of the cycle. Therefore, a series of meteorological data from 2007 to 2016 was used. The results showed that the frequency of days with low risk of mildew was 2%, medium risk 5%, high risk 93%. For B. cinerea, these values were 32%, 68%, and 0%, with low, medium and high risk, respectively. The number of required sprayings, according to the weather conditions, was lower than the number of sprayings recommended by the calendar system. The relationship between the risk of occurrence of the evaluated diseases showed a higher agro-meteorological favorability of occurrence of mildew in relation to B. cinerea.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Analysis of Climatic Risk Favorability of Grapevine Fungal Disease Occurrence for Santa Teresa, Espírito Santo State, Brazil

Rodrigues¹,

Oliveira²,

Alves³

et al. 2019

JAS

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“…The northern region of Paraná stands out for its table grape production, and it is responsible for approximately 20% of the total grapevine growing area in Brazil SHIMANO;SENTELHAS, 2013). This region is characterized by two crops per year, referred to as winter-spring and summer-fall crop seasons .…”

Section: Introductionmentioning

confidence: 99%

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

Pereira

Tessmann

Santana

et al. 2018

SCA

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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 summerfall 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. ResumoO 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) e...

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“…Fungal diseases are the primary cause of qualitative and quantitative losses in grape production (Shimano & Sentelhas, 2013). The probability of disease occurrence increases when the growing conditions, favorable climate, and susceptibility of the grape cultivar correspond to the conditions for the spread and development of pathogens with inoculum potential in the vine (Garrido, 2017).…”

Section: Introductionmentioning

confidence: 99%

Manejo da podridão da uva madura em videira ‘Niagara Rosada’

Leles

Genta²,

Marques³

et al. 2022

Semina: Ciênc. Agrár.

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A podridão da uva madura causada por Colletotrichum spp. é uma ameaça ao cultivo de uvas sob condições de alta precipitação e temperaturas elevadas. Devido à carência de informações disponíveis sobre medidas de controle desta doença em uva rústica de mesa ‘Niágara Rosada’, este trabalho teve como objetivo responder às seguintes questões: a) em quais estádios fenológicos a aplicação de fungicidas tem maior eficiência no seu controle? b) quais fungicidas e produtos biológicos apresentam maior eficiência no seu controle? c) os componentes lado e alvo de pulverização da videira influenciam no seu controle? e d) a erradicação do inóculo por remoção de restos culturais, aplicação de ureia no solo ou aplicação de calda sulfocálcica influenciam no seu controle? Para responder essas questões, foram realizados quatro experimentos em blocos casualizados, em parreirais comerciais localizados em Rosário do Ivaí, PR, Brasil, durante as safras de 2016 a 2020. No primeiro experimento avaliou-se a aplicação de fungicidas nas fases fenológicas: a) pleno florescimento; b) fim do florescimento; c) bagas no estágio de grão de ervilha; d) início do fechamento do cacho (meia baga); e) início do amadurecimento do cacho; f) metade do amadurecimento do cacho; e g) início e metade do amadurecimento do cacho. No segundo experimento avaliou-se a aplicação de diferentes fungicidas e produtos biológicos. No terceiro experimento, realizado em arranjo fatorial 2×2, avaliaram-se os seguintes fatores e níveis: a) alvos de aplicação (direcionada aos cachos, e direcionada aos ramos e aos cachos); e b) modos de aplicação (em um lado da videira somente e nos dois lados da videira). No quarto experimento, realizado em arranjo fatorial 2×2×2, avaliaram-se os seguintes fatores e níveis: a) fonte de inóculo – cachos mumificados da safra anterior (removidos ou não); b) aplicação de ureia no solo para degradação dos restos culturais (aplicada ou não); e c) aplicação de calda sulfocálcica após a poda de inverno (aplicada ou não). No fim do ciclo produtivo, foi avaliada a incidência de podridão da uva madura em todos os experimentos. Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Fisher (LSD) a 5% de significância. A pulverização de fungicidas nos estádios fenológicos fim do florescimento, grão ervilha e amadurecimento, direcionada aos cachos em um lado da videira, reduziu a incidência de podridão da uva madura nos cachos de ‘Niágara Rosada’, podendo ser utilizados os seguintes fungicidas: metiram em mistura com piraclostrobina, associado ou não ao fosfito de potássio ou ao biofungicida a base de Bacillus amyloliquefaciens cepa d-747, trifloxistrobina em mistura com tebuconazol, tebuconazol, tetraconazole, captana, folpete. A remoção de cachos mumificados da safra anterior reduziu a incidência da doença.

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Risco climático para ocorrência de doenças fúngicas da videira no Sul e Sudeste do Brasil

Cited by 5 publications

References 7 publications

Analysis of Climatic Risk Favorability of Grapevine Fungal Disease Occurrence for Santa Teresa, Espírito Santo State, Brazil

Analysis of Climatic Risk Favorability of Grapevine Fungal Disease Occurrence for Santa Teresa, Espírito Santo State, Brazil

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

Manejo da podridão da uva madura em videira ‘Niagara Rosada’

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