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What preventive measures are there for jujube witches' broom?

Jujube witches' broom disease is also called mad witches' broom disease. After the disease, some branches will constantly divide into tiny branches and leaves, which are densely clustered, which is quite different from the growth state of normal branches and leaves. Therefore, it is also called mad broom disease. The tiny technical leaves of densely clustered branches develop abnormally, the branches and leaves are deformed, the leaves turn yellow, and the trees will gradually die.

jujube witches' broom is a viral disease. At present, there is no specific drug to prevent jujube witches' broom. General anti-virus drugs can only alleviate the symptoms, but can't cure the disease radically. Therefore, we should not only rely on chemical drugs to prevent jujube witches' broom, but also lay a solid foundation for agricultural prevention, taking agricultural prevention as the main factor, supplemented by chemical prevention and comprehensive treatment, so as to effectively prevent or reduce jujube witches' broom and reduce the losses caused by the disease. Control measures of jujube witches' broom:

1. Select disease-resistant rootstock and scion:

When cultivating rootstock seedlings, we should use wild Ziziphus jujuba seeds with strong disease resistance to cultivate rootstock, and when grafting scion, we should also choose disease-resistant and high-quality annual jujube heads or 2-3-year-old fruit-bearing base branches as scions, which are easy to survive, anti-aging and have strong plant stress resistance.

2. Destroy the virus vectors in time:

Jujube trees are often easily eaten by insects such as Diptera, which have a wide range of activities and will carry a variety of viruses and germs, which will not only harm jujube leaves, but also spread the virus to the branches and leaves of the contacted jujube trees, causing jujube madness. Therefore, in May and June, 1,5 times of dichlorvos or beta-cypermethrin can be sprayed.

3. Strengthen fertilizer and water management:

Jujube trees have short growth period, flowering and fruiting, and the branches and leaves grow more intensively. If there is insufficient nutrition, drought and water shortage, it will easily weaken the tree's vigor, reduce the disease resistance, and at the same time aggravate the virus disease. Therefore, proper topdressing and watering at the right time can not only ensure the strong trees to increase their yield, but also improve their disease resistance and reduce the virus disease.

4. Cut off the diseased branches in time:

If it is found earlier, the densely clustered branches that have just been plucked can be cut off in time, taken away from the garden and buried far away, so as to prevent the spread of infection. If the disease is serious, the whole tree can be dug up, and the root cause can be prevented and eradicated.

5. Chemical control:

Jujube witches' broom is a viral disease. Chemical control can only alleviate the symptoms, but can't cure the disease radically. At the beginning of the disease, 2% virus A5 times solution, or virus K3 times solution, or 1.5% phytosanitary 8 times solution can be sprayed once every 7-1 days for 2-3 times.