In the early stage of the disease, we can spray 25% carbendazim WP 600-800 times, or 70% mancozeb 600 times, and spray 2-3 times every 15-20 days.
For the prevention and control of the disease, in autumn, the susceptible branches and leaves should be removed and burned intensively to reduce the source of infection; strengthening the management, increasing the application of organic fertilizer, phosphorus and potassium fertilizer, and doing well in drought prevention and waterlogging prevention work are conducive to strengthening the tree potential and improving the resistance of the plant itself. Before and after spreading leaves, especially for seedlings, it is necessary to spray pomegranate 3-5 degree sulfur mixture, or 65% zineb 500 times solution in time; for the prevention and control of bacterial perforation, zinc sulfate lime solution can be sprayed after spreading leaves.
For the prevention and control of leaf spot disease, it is also necessary to cut and burn the seriously affected leaves in autumn and winter to reduce the source of infection; when planting, control the reasonable distance, not too dense, and properly prune to maintain better ventilation and light transmission conditions; when watering, avoid wetting the leaves, preferably in the morning of sunny days; in the early stage of the disease, spray 75% 100 times every 10 days or so. Fungicides such as fungicide WP 700-800 times. In the case of more serious disease development, spray 50% carbendazim 1000 times solution for control.
For the control of aphids, we can use 1500 times of 20% methomyl emulsifiable concentrate for spraying, or 1000-1500 times of 50% Pirimicarb emulsifiable concentrate, or 1000 times of 80% dichlorvos emulsifiable concentrate for effective control.
