bacterial fruit blotch of watermelon

Bacterial fruit blotch is easily identified by the large greasy appearing lesions on the fruit, often on the top side of the fruit. It is helpful, however, to become familiar with the necrotic lesions on leaves. While these lesions are not important economically, identification of lesions on transplants or early plantings may help one to manage the disease. Leaf lesions also provide a reservoir of inoculum for lesions on the fruit. Almost always associated with seed production. 

Figure 1. An irregular dark lesion can be observed on the top of this watermelon fruit caused by bacterial fruit blotch of watermelon. Figure 1. An irregular dark lesion can be observed on the top of this watermelon fruit caused by bacterial fruit blotch of watermelon.
Figure 2. Watermelon is cracked probably due to secondary infection of a lesion of bacterial fruit blotch. Note leakage of fluids has dripped down side of fruit. Figure 2. Watermelon is cracked probably due to secondary infection of a lesion of bacterial fruit blotch. Note leakage of fluids has dripped down side of fruit.
Figure 3. A large, spreading lesion due to bacterial fruit blotch is seen on the top of this watermelon. Note cracking of lesion. Figure 3. A large, spreading lesion due to bacterial fruit blotch is seen on the top of this watermelon. Note cracking of lesion.
Figure 4. Leaf lesions of bacterial fruit blotch of watermelon may be irregular. Figure 4. Leaf lesions of bacterial fruit blotch of watermelon may be irregular.
Figure 5. Leaf lesions of bacterial fruit blotch of watermelon can be irregular. Figure 5. Leaf lesions of bacterial fruit blotch of watermelon can be irregular.
Figure 6. Lesion of bacterial fruit blotch of watermelon seedling. Figure 6. Lesion of bacterial fruit blotch of watermelon seedling.