Pathogen Information
Anthracnose is casue by the fungal genus of Colletotrichum however, Apiognomonia and Gnomonia are commonly associated with it due to having similar symptoms.
- Irregular brown or black spots on leaves.
- lesions or cankers forming on bark resulting in shoot blight.
- Sucken and discolored sppots form on fruits.
- Can affect leaves, stems, and fruits.
Environmental Conditions
- Temperature: 55-80°F
- Humidity: Wet leaves and fruit for extend period of time.
- Most effected species: Can effect a wide range of plants to included trees, shrubs and ever grasses.
Disease Progression
Early Stage
Discolored spots after heavy rainfall.
Mid Stage
Irregular lesions form on leaves.
Cankers forming on branches
Late Stage
Premature death from top shoot and even the plant
New shoots die back
Prevention Methods
- Avoid overhead irrigation
- Maintain proper plant spacing
- Remove and destroy infected plant debris
- Use disease-free seeds and resistant varieties
- Mow yard while grass is dry
- Keep leaves dry and improve air circulation
Treatment Options
- Azoxystrobin fungicides
- Chlorothalonil-based fungicides
- Neem oil treatments
- Copper-based fungicides
