1 Strengthening cultivation and management, enhancing tree vigor, and improving the ability of trees to resist disease are the fundamental measures for disease prevention. The specific methods are the same as apple tree rot disease. In order to prevent the occurrence of saplings, it is necessary to strengthen the management of the nursery to cultivate strong seedlings. Bud grafted seedlings should be anviled 15 to 20 days before germination, disinfected with 1% copper sulphate, and then coated with Bordeaux fluid. When seedlings are planted, it is advisable to use the grafting interface to level with the ground. Avoid planting depth and pour enough water to reduce the time for seedlings to grow.
2 scrape the lesions. The initial stage of dry rot damage is generally limited to the surface and should be scraped and treated in time. After scraping, the patient was disinfected with arsenic and other drugs. Method with apple tree rot disease. Can also be used to re-skin scraping, eradication of the bacteria brought by the tree.
3 chemical control. Before the germination of fruit trees combined with other pest control, spraying 40% of Formamide arsenic 100 times solution or Baume 3 to 5 degrees lime sulfur plus 0.3% pentachlorophenol sodium mixture to protect the trunk. From May to June, two consecutive sprays of 1:2:200-240 Bordeaux mixture or 50% WP wettable powder 800 times were sprayed.
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