black rot of cole crops

Black rot-The importance of black rot on a cole crops depends in part on when the disease becomes prevalent. If the disease doesn’t become prevalent until late in the season, yield loss will probably be light. However, if black rot affects the crop at an early stage, yield loss may be considerable. Black rot may also be important in the transplant greenhouse. Typical symptoms include V-shaped lesions on the leaf margin. 

Figure 1. Black rot has caused the lesions on this cabbage plant. Figure 1. Black rot has caused the lesions on this cabbage plant.
Figure 2. Close up of black rot on cabbage leaf. Figure 2. Close up of black rot on cabbage leaf.
Figure 3. Typical V-shaped lesion of black rot on cabbage leaf. Figure 3. Typical V-shaped lesion of black rot on cabbage leaf.
Figure 4. Initial lesion of black rot on cabbage. Figure 4. Initial lesion of black rot on cabbage.
Figure 5. Initial lesions of black rot on nearly mature cabbage. Figure 5. Initial lesions of black rot on nearly mature cabbage.
Figure 6. A row of cabbage severely affected by black rot. Figure 6. A row of cabbage severely affected by black rot.
Figure 7. Black rot on broccoli transplant. Figure 7. Black rot on broccoli transplant.
Figure 8. Black rot on nearly mature broccoli. Figure 8. Black rot on nearly mature broccoli.