Inhibitory Effects of Six Fungicides against Neocordana musae

摘要

[Objective]The paper was to screen effective fungicides to control Cordana leaf spot caused by Neocordana musae.[Method]The toxicities of six fungicides against mycelial growth of N.musae were measured by the method of mycelium growth inhibition.[Result]The average EC50 values of six fungicides against mycelial growth ranged from 0.1029 to 504.065μg/mL.Among them,22.5%picoxystrobin SC and 12.5%epoxiconazole SC showed strong inhibitory activity on mycelial growth,with the average EC50 values of 0.1029 and 0.6851μg/mL,respectively;followed by 50%thiophanate-methyl SC,with an average EC50 value of 1.993.80%Azoxystrobin WG showed a relatively low sensitivity against N.musae,with an average EC50 value of 504.046.[Conclusion]The six fungicides tested have great value in preventing and controlling Cordana leaf spot.22.5%Picoxystrobin SC,12.5%epoxiconazole SC and 50%thiophanate-methyl SC have better inhibitory activities on mycelial growth of N.musae,and can be further used in field trials.