cercospora leaf mold of tomato
Cercospora leaf mold-This disease is known as a tropical or subtropical disease. In recent years, however, this disease has become more frequent in Indiana, particularly in high tunnels. Note dark or black sporulation in contrast with olive green sporulation common in leaf mold.
Figure 1. Cercospora leaf mold of tomato. Note relatively large lesions with diffuse chlorotic margins. 
Figure 2. Underside of tomato leaf with Cercospora leaf mold. Note dark sporulation of pathogen and compare with leaf mold of tomato. 
Figure 3. Cercospora leaf mold of tomato. Note that smaller lesions are chlorotic while larger lesions have become necrotic. 
Figure 4. Another look at the underside of a tomato leaf with sporulation of Cercospora leaf mold. 
Figure 5. Cercospora leaf mold of tomato in a high tunnel. 
Figure 6. Another view of the dark sporulation of Cercospora leaf mold of tomato.