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Two days ago, when I was reading some questions, I saw that some farmers were asking, what should I do if the jujube tree has jujube madness? Is jujube madness a viral disease? Can this disease be cured?
Here Xiaobian told you jujube farmers that so far, there is no drug that can completely cure jujube madness, jujube madness is classified by many people as a viral disease, but the agent for viral disease is of little use to it. Because it is not a viral disease, but very similar to a viral disease, its causative pathogen is an implant, a multimorphic plasmid between the virus and bacteria. Therefore, the agent for viral diseases is basically ineffective against it. Let's talk specifically about jujube madness.
The dangers of jujube madness
Jujube madness is a devastating disease in the production of jujube trees, and it is found in almost all jujube cultivation areas at home and abroad. In China, Hebei, Henan, Shandong and other provinces have the most serious disease. Orchards with severe illness often result in the extinction of the whole garden. Once the jujube tree falls ill, it rarely bears fruit in the second year, so the diseased tree is commonly known as the "male jujube tree", and the whole plant dies after three or four years of illness.
<h1>Symptoms of onset</h1>
Jujube madness generally shows symptoms after flowering, mainly manifested by the elongation of the peduncle, the flower changes leaves and lateral buds sprout in large numbers and the branches and leaves are overgrown, resembling a bird's nest.
The flower organs of the sick part become vegetative organs, and a flower becomes a small branch. The peduncle is lengthened 4-5 times, and the sepals, petals, and stamens all become leaflets.
The leaf disease occurs, first the leaf flesh turns yellow, gradually the whole leaf yellows, and then the leaf margin is rolled up, dull and dull, hard and brittle. Some leaf tips have scorched edges and appear to be potassium-deficient. In severe cases, the diseased leaves fall off, and the leaves that grow after flowering are narrow, veined, and easily scorched. Again, a rat-eared leaflet grows on the midrib of the leaf back.
After the fruit is damaged, it has a flower-like face, the fruit surface is uneven, the convex is green, the fruit size is different, the flesh is loose, and it is inedible.
The main root of the diseased tree is adventitious and tends to germinate in large numbers to grow a clump of short crazy branches, and the cortical layer of the diseased root decays in the later stage, causing the death of the whole plant when severe.
<h1>Prevention and control measures</h1>
Agricultural measures
1.1 Cultivate non-toxic seedlings and select healthy asexual propagating materials
1.2 Strengthen cultivation management: timely fertilization, reasonable irrigation, loose soil and weeding, create environmental conditions conducive to the growth and development of jujube trees, and enhance the disease resistance of jujube trees.
1.3 Selection and cultivation of jujube madness resistant varieties: different varieties have different disease resistance to pathogens, some are manifested as making it impossible for mycoplasma to proliferate and are not easy to proliferate, and some are manifested as although there are mycoplasmas, but only mild symptoms, which do not affect the normal growth of jujube trees, and also manifest as resistance to vector insects. Therefore, breeding and cultivating disease-resistant varieties is an economically effective way to prevent and control jujube madness.
1.4 Insect control and disease prevention: The only way for healthy jujube trees to naturally occur jujube madness in the field is through vector insects - leafhoppers (Chinese pseudo-rhododendron leafhoppers and concave edge rhododendron leafhoppers, etc.), and the natural contact of soil, pollen, seeds, and diseased roots cannot spread jujube madness. When it comes to curing insects and preventing jujube madness, the key is to grasp the effective spraying period. Pyrethroids, imidacloprid, etc. can be selected, and the Shandong region generally pays attention to the prevention and control of the first generation of leafhoppers in April 5, and if more follow-up occurs, it is also necessary to prevent and control in time, and the time of occurrence of the first generation in different regions is slightly different.
chemical control
Jujube madness is a disease caused by the plant source, which is sensitive to tetracycline and tetracycline antibiotics. The effective medication timing for jujube madness plants is during the germination period of jujube trees, and the application agents are tetracycline hydrochloride or oxytetracycline, which are injected by punching holes in the rhizome, which can significantly reduce the symptoms of madness trees, and some also completely return to normal growth, and a large number of results.
The use of chemical drugs to treat jujube madness can only be used as a temporary remedy, and cannot completely rely on this method to completely eliminate the bacteroids in the body of the diseased strain, and chemical drugs can only treat the symptoms and not the root causes. If it is heavier, it is still recommended to cut it in time to avoid spreading!