Citrus Black Spot (CBS) is a fungal disease that affects citrus fruits, including oranges. It is important to detect the symptoms of CBS early to prevent its spread and minimize crop damage. Here are the symptoms of Citrus Black Spot to look out for in oranges:
- Black or brown spots on the fruit: The most visible symptom of CBS is the appearance of raised, corky, or sunken black or brown spots on the surface of the orange. These spots may start small and develop into larger lesions over time.
- Lesions with a concentric ring pattern: The black or brown spots often have a distinctive concentric ring pattern. This pattern may be more visible as the lesions mature. The rings can vary in color, from dark brown to black.
- Lesions on the fruit peel: The lesions caused by CBS are primarily found on the fruit peel. They may appear as small dots or larger, irregularly shaped patches. These lesions can be superficial or penetrate deeper into the fruit.
- Lesions on leaves and twigs: In addition to affecting the fruit, CBS can also cause lesions on leaves and twigs of citrus trees. These lesions may exhibit similar characteristics to those on the fruit, such as dark coloration and a ring pattern.
- Premature fruit drop: Infected oranges may experience premature fruit drop. The presence of CBS can weaken the fruit and cause it to fall prematurely from the tree before reaching maturity.
It is important to note that symptoms alone may not be sufficient to confirm the presence of Citrus Black Spot. If you suspect CBS in your oranges, it is recommended to consult with a local agricultural extension service or a plant pathology expert for proper diagnosis and guidance on management strategies.
