Control measures of Jujube Mad Disease in Jujube trees

Jujube mad disease, also known as broom disease, fire dragon disease, is a destructive comparison of jujube trees, the disease is the first symptoms from the branches and leaves, spreading in the whole plant, so what are the specific symptoms of jujube madness? How to prevent and cure it? Let's take a look.

I. harmful symptoms of jujube mad disease

1. The root disease is to sprout a large number of adventitious buds, which often grow clumps of short crazy roots, and multiple crazy roots can appear on the same root. In the later stage, the cortical layer of the diseased root rotted, and the whole plant died in severe cases.

2. The disease of branches is that the main buds and secondary buds sprout to form developing branches at the same time, and the branches and leaves are clustered, the leaves are yellowed, the leaf edges are rolled up, and the leaves are hard and brittle and dull. The buds on the new branches can germinate many times to form clusters of thin, short internodes and small and yellow leaves.

3. The disease occurs in the leaves. The diseased leaves growing after flowering are long and narrow, with dark veins, light green and easy to scorch. Sometimes a small dark vein piece grows on the midvein of the back of the leaf, which is like a mouse ear.

4. the floral organ will be atavistic, such as pedicels, sepals, petals, stamens and pistils degenerated into thin branches, leaves and other nutrient tubes.

Second, the law of the disease.

The pathogen of jujube mad disease runs upward from the bottom during germination and from top to bottom after the branches stop growing, which often causes the disease of the whole plant, and the epidemic of the disease is related to variety and management. Because there are some differences in disease resistance among different varieties, some varieties have high incidence, and jujube mad disease is often prevalent in jujube orchards with dry and barren soil, poor fertilizer and water conditions, extensive management, serious diseases and insect pests and weak trees.

III. Prevention and control measures

It is necessary to clean up the crazy branches in time, root out the diseased plants with no economic value, choose the varieties with strong disease resistance as grafting rootstocks, strengthen the inter-garden management and increase the application of alkaline fertilizer and farm manure. At the initial stage of the disease, the expert drilled holes in the roots and stems of diseased trees, and during the sprouting period of jujube trees in spring or October, each diseased tree was dripped with a concentration of 0.1% tetracycline solution of 500 ml. Or drill a hole on each side of the base of the trunk or the middle and lower part of the non-scar node, reaching to the pith, the vertical distance between the two holes is 10-20 cm, and the liquid containing 10,000 units of oxytetracycline is injected with a high-pressure syringe.

The above is the introduction of jujube mad disease prevention and control measures, hope to help you, want to know more related knowledge, please pay attention to us.