Data/hora: 03/06/2024 12:40:47

Biblioteca(s): | Epagri-Sede.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | Internacional - A
Data corrente: | 14/02/2022
Data da última atualização: | 14/02/2022
Autoria: | FERREIRA, G. M.; MOREIRA, R. R.; JAREK, T. M.; NESI, C. N.; BIASI, L. A.; MIO, L. L. M.
Título: | Alternative control of downy mildew and grapevine leaf spot on Vitis labrusca.
Ano de publicação: | 2022
Fonte/Imprenta: | Australasian Plant Pathology, Switzerland, p. 1-8, 2022.
Idioma: | Inglês

Conteúdo:

The number of organic vineyards around the metropolitan region of Curitiba-Paraná-Brazil is increasing, and alternative
products to control downy mildew (Plasmopara viticola) and grapevine leaf spot (Pseudocercospora vitis) are crucial for
the development of organic grape production. The objective of this study was to compare the efficacy of ten alternative
products to control downy mildew on ?Concord? and grapevine leaf spot on ?Bordo?. The incidence and severity of both
diseases were assessed to compare the treatments during two consecutive seasons in an organic vineyard under favorable
weather conditions for the development of the diseases, in the metropolitan region of Curitiba, Paraná, Brazil. Biostimulant
(Eurofit Max) reduced downy mildew incidence and severity in both seasons compared to the control. Lime sulfur reduced
downy mildew severity only in the second season. Lime sulfur was the most effective treatment against grapevine leaf spot
reducing the disease incidence and severity in both seasons. The severity of grapevine leaf spot was also reduced in the
second season by Bacillus alcalophylus, biostimulant and chitosan. Lime sulfur showed phytotoxic effects at the doses and
application frequency tested, reducing internode length and diameter on ?Bordo?. Biostimulant provided increased internode
size in ?Concord?. This study demonstrated that alternative control may be effective against downy mildew and grapevine
leaf spot. These findings contribute to the establishment of more sustainable V. labrusca production while maintaining the
efficacy of disease control.

Palavras-Chave: | Plasmopara viticola · Pseudocercospora vitis · Bacillus · Chitosan · Lime sulfur · Biostimulant · Essential oils.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_50702.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (106698-1) - UPC - AP - DD -  -  -  - DIS