Mycelial growth inhibition Effect Determination of Fungicides on Corn Northern Leaf Blight

determination results of indoor bacteriostasis and toxicity show that mycelial growth inhibition effects on corn northern leaf blight are different according to fungicides adopted;corn northern leaf blight fungus is sensitive to all fungicides but with different levels of sensitiveness accordingly.Fungicide with lower EC50 value and higher slope rate is more effective to the fungus.In this study,Mancozeb,Dexon and Iprodione were selected as the best fungicides to corn northern leaf blight fungus,some useful data on chemical control of the fungus were also provided.