disease_position_scattered
scattered
Maxus japonicus and M. miquelii are very common wild plants growing on wet ground through the country. Only mosaic disease associated with Cucumber mosaic virus has been recorded (Chung et al., 1975) in Korea. The plants are usually infected with a powdery mildew (Oidium sp., not published, Shin), a rust (not examined, Shin), and Septoria sp. This Septoria disease is characterized by having circular large lesions with scattered dots (conidiomata), which are easily seen with naked eye. Since the leaf lesions are generally large without distinct margin and amalgamated to cause leaf blight in the later stage of disease development, the Korean name of this disease is suggested as 'ip-mareum-byong', which means literally 'leaf-blight-disease'.
Septoria mazi
Septoria mazi