Answer: The occurrence of white rot in apple fruit is mainly at the late stage of fruit growth. The disease focuses on prevention. At the end of the fall, all fruit and diseased branches and leaves in the orchard were collected and burned or buried deeply. Late autumn or early spring spray of 3 to 5 Baume degrees of lime sulfur, or spray the whole tree 70% thiophanate-methyl WP 800 to 1000 times 1 or 2 times, spray every 8 to 10 days. During the period of transmission and infestation of brown rot disease spores, every 8% to 10 days of the whole tree was sprayed with 5% anaerobic toxin 300 times or 50% carbendazim 800 to 1000 times. 20-30 days before fruit harvest, the fruit surface was sprayed with 0.3% to 0.5% potassium permanganate solution. Before storage, use 10% garlic extract or 0.3% potassium permanganate solution to soak fruit for 10 to 15 minutes, air dry, and store.
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