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Symptoms of this fungal disease vary with the crop. Beans develop round, black, sunken spots on the pods and stems; on leaf undersides, veins turn black. When the fungus infects cucumbers and melons, the leaves develop yellow spots that dry up and flake away; spots on watermelon leaves are black. Infected fruits develop sunken areas with dark borders. On tomato plants, ripe fruit develops sunken spots with dark centers.
Anthracnose can also develop in other vegetable crops and in strawberries. Wind and wet weather fosters the spread of infection. Anthracnose overwinters in plant residues in the soil. It is an especially troublesome disease in hot, humid regions.
Last updated: 7/12/19
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