Citrus canker is a highly contagious bacterial disease that affects citrus trees, including oranges. Here are some symptoms of citrus canker that you should look out for in oranges:
- Lesions on leaves: Look for raised, corky, or scabby lesions on the leaves of orange trees. These lesions are usually circular or oval in shape and have a characteristic corky texture.
- Lesions on fruits: Citrus canker causes raised, corky lesions on the surface of the fruit. These lesions are usually round or oval and can be small or large in size. They may also have a raised, corky edge.
- Leaf and fruit drop: Infected orange trees may experience premature defoliation, where the leaves drop off the tree prematurely. The fruit may also drop prematurely due to the infection.
- Leaf and fruit distortion: Citrus canker can cause the affected leaves to become distorted, twisted, or deformed. Similarly, infected fruit may develop an irregular shape or deformities.
- Oozing or raised pustules: In more severe cases, you may observe oozing or raised pustules on the infected areas of leaves, fruits, or stems. These pustules may have a watery or oily appearance.
- Leaf and stem splitting: Citrus canker can cause splitting or cracking of leaves and stems, particularly at the sites of infection. This symptom is more common in mature fruit.
- Stunted growth: Infected orange trees may exhibit stunted growth, with reduced vigor and smaller overall size compared to healthy trees.
It’s important to note that the symptoms mentioned above are indicative of citrus canker, but they can also be caused by other diseases or environmental factors. If you suspect citrus canker in your orange trees, it is advisable to consult with a local agricultural extension service or plant pathology expert who can provide an accurate diagnosis and recommend appropriate management strategies.
