Alternaria leaf spot

Figure 1. Alternaria leaf spot lesion on a broccoli transplant.

Figure 2. Alternaria leaf spot 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.