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Anthracnose
This disease requires cool, wet conditions for infection and symptom development. Anthracnose is always associated with rainy springs Susceptible Plants- Beans, cucumber, melon, peppers, and tomato. Anthracnose prone trees include Dogwood Symptoms of anthracnose diseases include small irregular yellow or brown spots that appear on leaves and darken with age. On vegetables anthracnose diseases produce small, dark, sunken spots in the skin. As the disease progresses the spots spread. Pinkish Fruit eventually rots. On trees the infection can begin before leaves appear killing the tips of the young branches. Anthracnose diseases can also produce brown spots on young leaves causing defoliation forcing to produce a new set of leaves in the summer severely weakening the tree.
Gather up and destroy invested leaves. Environmental factors also play important roles in managing anthracnose. Pay close attention to past and current conditions such as rain and irrigation to determine if anthracnose development is favored. Dry spring weather could mean that disease management is not necessary. A wet spring or an irrigation system that wets the foliage could result in disease outbreak that may warrant control. Fungicidal Sprays- A fungicidal spray such as Bordeaux Mixture may provide some control. Copper 4E Fungicide
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