Identification of sooty mould pathogen in butterfly orchid and selection of fungicides for its control.

The pathogen of the sooty mould in butterfly orchid was identified as Cladosporium herbarum,and 10 fungicides were selected to inhibit the disease.The results showed that 30% Difenoconazole,45% Ether benzene.Methylthio and 12.5% Myclobutanil had better inhibitive effects to this disease,and the disease index was 8.05,9.14 and 10.21,respectively.Their control effects were above 85%,which were significantly different from that of the other fungicides.