alternaria leaf spot of cole crops
Figure 1. Alternaria leaf spot lesion on a broccoli transplant. 
Figure 2. Alternaria leaf spot lesions of several different sizes can be observed. 
Figure 3. The roughly round area of diseased broccoli transplants observed here represents a focus of disease. Alternaria leaf spot probably started on a transplant in the center of this area and spread to surrounding seedlings. 
Figure 4. Alternaria leaf spot lesions on a mature broccoli leaf. 
Figure 5. Alternaria leaf spot on kale.