A preliminary report on occurrence of the spot blight on Codonopsis lanceolata
Symptoms and morphology of the spot blight disease on Codonopsis lanceolata in Liaoning was reported for the first time. The pathogen causing the disease was isolated from the diseased leaves. According to the Koch postulates, the spot blight disease on C. lanceolata was caused by Septoria codonopsidis Ziling. Based on the fea-tures, control methods were also proposed in this article.