There are two main methods of prevention and control of jujube disease: agricultural control and chemical control.

Agricultural prevention and control:

1. Remove crazy branches and eradicate diseased plants with no economic value.

2. Select disease-resistant wild jujube varieties as rootstocks.

3. Cultivate disease-free seedlings. That is, in jujube orchards free of jujube madness, scions, buds or root divisions are used for propagation to cultivate disease-free seedlings.

4. Strengthen orchard management and increase the application of alkaline fertilizer and farmyard manure. ?

Chemical control:

1. In the early stage of the disease, use a hand drill to drill holes in the roots and stems of the diseased trees. During the budding period of the jujube tree in spring or in October, drill holes into each diseased tree. Instill 500 ml of tetracycline solution with a concentration of 0.1% into the tree.

2. Drill a hole on each side of the base of the trunk or the middle and lower parts of the scar-free section, reaching the core of the marrow. The vertical distance between the two holes is 10 to 20 cm. Use a high-pressure syringe to inject 10,000 units of Oxytetracycline solution. For tree trunks with a circumferential diameter of more than 30 cm, use 300 to 400 ml of medicinal solution; for tree trunks above 40 cm, use 500 to 700 ml; for tree trunk diameters above 50 cm, use 800 to 1000 ml; and for tree trunks above 60 cm, use 1200 to 1500 ml.

3. In the early stage of the disease, spray 0.2% ferric chloride solution 2 to 3 times per 667 square meters of jujube orchard, once every 5 to 7 days. Each application of 75 kilograms to 100 kilograms of liquid medicine has a good effect on preventing jujube madness.

Extended information:

The transmission route of the disease:

1. Vector insects: mainly including HISHIMONUSSELLETUSUhler, Orange-banded leafhopper Leafhoppers such as hishimonoidessurifacialesKuoh and red flash leafhopper Typhlocybasp, etc., after sucking on diseased trees, then feed on healthy trees, and the healthy trees become infected. The coexistence of virus-carrying insects and mad trees is a necessary condition for the spread of the disease. The orange-banded leafhopper overwinters as eggs on jujube trees; the concave leafhopper mainly overwinters as adults on pine and cypress trees, and its migrating hosts include mulberry, mulberry, sesame and other plants.

2. Grafting: Both bud grafting and branch grafting can be used. If either the scion or the rootstock is diseased, the grafted plant will become diseased. The length of the incubation period after grafting is related to the grafting site, time and tree age. Generally, the movement and distribution of pathogens: the pathogen invades the tree for 7 to 10 days and then travels downward to the roots. After multiplying, it travels from bottom to top to the crown, causing Crazy branches, small seedlings can go crazy in one year, but big trees will probably go crazy in the next year. Pathogens travel through phloem sieve tubes. There are pathogens in diseased branches, but almost no pathogens in healthy branches of diseased trees; during the growing season, there are pathogens in diseased branches and roots. At the end of the dormant season (March-April), there are basically no pathogens in diseased branches above the ground, but there are always pathogens in the roots.

Baidu Encyclopedia-Jujube madness