%0 Journal Article
%T Sele  o de Fungicidas para Controle de O¨ªdio em Eucalipto Selection of Fungicides for Control of Eucalypt Powdery Mildew
%A Rafaela Mazur Bizi
%A Albino Garcia Grigoletti J¨²nior
%A Celso Garcia Auer
%J Pesquisa Florestal Brasileira
%D 2011
%I Embrapa Florestas
%R 10.4336/2012.pfb.51.165
%X O objetivo deste estudo foi encontrar fungicidas eficientes contra o o¨ªdio do eucalipto. Foram testados os fungicidas chlorothalonil (2 g/l), fenarimol (0,5 ml/l), enxofre (3 g/l), tebuconazole (1 ml/l), propiconazol 12,5% + trifloxistrobina 12,5% (0,6 ml/l), benzothiadiazol (1g/l), piraclostrobina 13,3% + epoxiconazol 5% (1ml/l) e triadimenol (1 ml/l). Os fungicidas foram pulverizados em 30 mudas por tratamento de Eucalyptus benthamii, naturalmente infectadas. A doen a foi avaliada aos 9, 16, 23, 30 e 37 dias ap¨®s serem colocadas em um ambiente infectado, onde os sintomas foram classificados em uma escala de notas que variam de 0 (aus¨ºncia de sintomas) a 4 (sintoma muito forte). Os melhores tratamentos foram piraclostrobina + epoxiconazol, propiconazol + trifloxistrobina e triadimenol, apresentando um ¨ªndice m¨¦dio de infec  o de 0,39 e 0,63 e 1,01, respectivamente.   The objective of this study was to find effective fungicides against eucalypt powdery mildew. Fungicides tested were chlorothalonil, fenarimol, sulfur, tebuconazole, propiconazole, benzothiazole, pyraclostrobin + epoxiconazole and triadimenol. These fungicides were sprayed on Eucalyptus benthamii seedlings in a greenhouse infested with powdery mildew. Severity was evaluated at 9, 16, 23, 30 and 37 days after spraying, classifying symptoms observed with a scale 0 (symptoms absent) to 4 (strong symptoms). Best treatments were obtained with pyraclostrobin + epoxiconazole, propiconazole + trifloxystrobin and triadimenol, with an infection index average of 0.39, 0.63 and 1.01, respectively.
%K controle qu¨ªmico
%K doen a
%K Eucalyptus benthamii. 1
%U http://www.cnpf.embrapa.br/pfb/index.php/pfb/article/view/234