Abstract:

The aimed to research a botanical mixture fungicides and it’s inhibitory effect against Cladosporium fulvum Cke. The extract obtained from Tagetes root and Magnolia officinalis were used to prepare 15% pesticide emulsifiable concentrate. The stability of emulsifiable concentrate was analyzed, and the virulence test was conducted on Cladosporium fulvum Cke. The inhibitory rate against Magnolia officinalis1 for 15% emulsifiable concentrate at 2~40 mg/ml was 8.2%~80.3%, and it’s Median Effective Concentration EC50 was 12.02 mg/ml. This research provided scientific basis for developing new type bio-pesticide through utilizing Tagetes root and Magnolia officinalis.