Prune and Destroy: Prune and remove infected branches, twigs, leaves, and fruits from the lemon tree. It's important to dispose of the infected plant material properly by burning or burying it away from the orchard. This helps reduce the source of inoculum and prevent further spread of the disease.
Sanitation: Clean and disinfect pruning tools and equipment after each use to prevent the transmission of the bacteria. Also, remove fallen leaves and other plant debris from the tree's vicinity to reduce the chances of reinfection.
Copper-Based Sprays: Copper-based bactericides can be applied as a preventive measure to protect healthy lemon trees from citrus canker. Follow the instructions on the product label for application rates, timing, and safety precautions. It's important to note that copper sprays are most effective when applied before infection occurs.
Resistant Varieties: Consider planting lemon varieties that have some level of resistance to citrus canker. Resistant varieties may be less susceptible to the disease and can help reduce its impact.
Cultural Practices: Implement good orchard management practices, such as providing adequate spacing between trees to improve air circulation, avoiding overhead irrigation to minimize leaf wetness, and ensuring proper nutrition for the lemon trees to maintain their overall health and vigor.