Abstract:

Sclerotinia fuck sp. is a new disease on Zephyranthes candida. It has brought increasingly serious harm in three gorges reservoir recently. The cycle of infection and state of harm were investigated basically. The pathogeny and part of host range were determined by indoor isolated culture and inoculation tests. Indoor toxicity tests were made by four reagents. The results indicated that the effect of 55% pyrimidine mildew amine and carbendazim mixing agent on sclerotinia sclerotiorum in Zephyranthes candida was best. The effect better than 55% dimethachlon, 25% thiram-procymidone wettable powders and 8.50% iprodione Procymidone wettable powders oberviously. The result of this research provided the important basis for the effective prevention and controls the diseases.