Sabiia Seb
        Busca avançada

Botão Atualizar

Botão Atualizar

Registro completo
Provedor de dados:  Ciencia e Investigación Agraria
País:  Chile
Título:  Evaluation of the use of wound-protectant fungicides and biological control agents against stem canker (Neofusicoccum parvum) of blueberry
Autores:  Latorre,Bernardo A
Data:  2013-12-01
Ano:  2013
Palavras-chave:  Botryosphaeria canker
Biological control
Boric acid
Ascorbic acid
Vaccinium corymbosum
Resumo:  B.A. Latorre, R. Torres, T. Silva, and K. Elfar. 2013. Evaluation of the use of wound-protectant fungicides and biological control agents against stem canker (Neofusicoccum parvum) of blueberry. Cien. Inv. Agr. 40(3): 537-545. Economically, blueberry (Vaccinium corymbosum) has become a very important fruit crop in Chile, and stem canker (Neofusicoccum parvum) has frequently been observed as a major disease. The symptoms are characterized by partial or total death of the foliage associated with extensive reddish-brown canker lesions at the base of the stems. Pruning wounds appear to be the main infection route. In this study, fungicide pastes and biological control agents were evaluated for their effectiveness as pruning wound-protectants against N. parvum. The mycelium of N. parvum was highly sensitive to benomyl, tebuconazole, and iprodione in vitro, with median effective concentrations (EC50) of 0.15-0.25, 0.26-0.33, and 0.52-0.68 μg-mL-1, respectively. The pastes formulated with 0.1% benomyl, 0.5% tebuconazole, and 0.06% iprodione also provided considerable protection of pruning wounds against N. parvum on the stems of Duke blueberries under field conditions. However, pyraclostrobin, with relatively high EC50 values (>2 ng-mL-1) in vitro, was largely ineffective in vivo at a 0.1% concentration, and 75% citrus extract (Citrus SL), Bacillus subtilis QST713 (Serenade Max), and Trichoderma spp. (Trichonativa) were also ineffective. Additionally, pastes formulated with 5% boric acid, although effective, were phytotoxic.
Tipo:  Journal article
Idioma:  Inglês
Editor:  Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
Formato:  text/html
Fonte:  Ciencia e investigación agraria v.40 n.3 2013

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC:

Valid HTML 4.01 Transitional