How to treat jujube mosaic disease? How to treat jujube tree lobular disease

Hello, strengthen orchard management, increase organic fertilizer, reasonable irrigation, scientific pruning, adjust ventilation and light transmittance, enhance tree potential, improve disease resistance, strengthen the prevention and control of leafhoppers, aphids and other transmission vectors, and prevent the spread of viruses. Choose disease-resistant varieties and strictly inspect them when grafting to avoid taking scion from diseased plants. Concentrate on burning diseased seedlings to avoid spreading.

Jujube mosaic disease is a serious disease second only to jujube madness in northern jujube trees, and it has a tendency to worsen year by year. According to the research of Ma Runnian, a teacher at Shanxi Agricultural University, jujube mosaic disease is a disease caused by mycoplasmid infection. Because mycoplastids are sensitive to tetracycline, the following methods can be used to prevent and control them.

In mid and late April, when the jujube buds begin to germinate, at the base of the main trunk of each diseased tree is 10 15 cm from the ground, two holes with a deep diameter of 2 3 are drilled to the core of the main trunk with a wooden drill, and the two holes are perpendicular to each other. Plug a hole and leave a hole to drip the liquid medicine. 250,000 units of tetracycline hydrochloride are diluted into 1000 4000 milliliters, and 250,000 units are injected into each plant (using the hanging bottle injection infusion method), so that the liquid can slowly penetrate into the trunk.

Jujube tree base fertilizer can be used circle fertilizer, human manure, compost, etc., about 150-250 kg per plant, for the weak tree needs to be added 45% nitrogen, phosphorus and potassium compound fertilizer about 1 kg, top dressing in germination, can be applied to each plant kilogram of urea and with a certain amount of phosphorus fertilizer and boron fertilizer, in the young fruit, can be used for each plant with 45% compound fertilizer about 1 kg, after fruit picking can be sprayed with sea meal fertilizer potassium dihydrogen phosphate, which helps the growth of jujube trees.

Jujube mosaic disease is also known as jujube mosaic virus disease, what are the hazards of jujube mosaic disease? What is the cause of jujube mosaic disease? How to prevent and control jujube mosaic disease?

The following farming gang will be introduced in detail for the reference of netizens. 1. Symptoms and hazards of jujube mosaic disease After jujube trees are harmed by mosaic disease, the leaves of jujube trees become smaller, and the leaf surface appears yellow and green with fine fragments, which first appear at the tip of the leaves, and then expand to the whole leaves. The surface of the diseased leaves of the affected jujube tree is uneven, wrinkled, distorted, translucent, yellow and green flowers and leaves, and the photosynthetic ability is affected, and generally does not cause defoliation.

2. Transmission routes and causes of mosaic disease in jujube trees Mosaic disease is mainly caused by dry weather, leafhoppers and aphids, and the spread of mosaic disease is mainly through leafhoppers and aphids. Grafting can also spread mosaic disease. 3. Prevention and control methods of jujube mosaic disease 1. Strengthen orchard management, increase organic fertilizer and potassium fertilizer to jujube trees, avoid partial application of nitrogen fertilizer, and irrigate or drain jujube orchards in a timely manner.

2. Prune the jujube trees scientifically to improve the ventilation and light transmittance in the garden, which can reduce the breeding of pests. 3. When purchasing jujube seedlings, avoid using diseased plants. 4. Impose the prevention and control of orchard pests to prevent the spread of diseases.

From the germination period of jujube trees in late April, spraying pests to control pests, leafhoppers can be used 50 phosphine emulsion 1000-1500 times, or 80 dichlorvos emulsifiable concentrate 8 ()0-1000 times, or 50 thiophos emulsifiable concentrate 1000-2000 times, etc., with 10 imidacloprid wettable powder 2000-3000 times or 50 aphid anti-aphid wettable powder 1500-2500 times liquid. Generally, the interval between spraying is 10 to 15 days. If you have a better way to prevent and control it, please leave a message below to tell us, and thank you for your support.

There are two possible reasons:

One is zinc deficiency, which can be solved by artificial supplementation of zinc sulfate, and by supplementing elemental zinc by foliar fertilizer.

The other is jujube madness.

1 Symptoms.

The main manifestations are the following types of symptoms: Flowers change to leaves. Leafy and foliage-grown. Roots sprout crazy tillers. All of the above show shortening of the branch internodes. The leaves become smaller and yellow. In winter, the mad branches still retain the dead and crazy leaves and do not fall off.

2 Pathogens and pathogenesis.

The disease is caused by mycoplasma (MLO). Mycoplasmas can be transmitted by grafting and insects (Leafhopper with concave margin, Leafhopper with orange band, and Leafhopper with red flash). Jujube madness is severe in jujube orchards where the soil is arid and barren, the management is extensive, and the trees are weak.

At the same time, the occurrence of the disease is also related to the variety of jujube trees, the altitude and slope of the jujube orchard.

3 Prevention and control measures.

1) Cultivate disease-free seedlings.

2) Choose disease-resistant varieties and rootstocks.

3) Strengthen cultivation management, improve tree disease resistance, maintain orchard hygiene, and prevent and control poisonous insects in a timely manner.

4) Perform a reasonable ring peeling to stop the operation of mycoplasma in the plant (but at most once a year).

5) Inject tetracyclines into diseased trees, which has a prevention and control effect, but can not be injected again.

You will find that the leaves of the jujube tree have become a lot smaller, and there will be some yellow-green spots, there will also be bulging symptoms on the surface, the leaves will be some distortions, and there will be some oily feeling, which will affect the photosynthesis of the jujube tree.

Jujube mosaic disease is a disease of jujube trees in northern China, which has gradually worsened in recent years, and is caused by a mycoplasmid infection.

This is a common condition on the jujube tree, the leaves will all fall off, and the fruit will sprout a second time, and there will be spots on it.

It can be solved by supplementing with elemental zinc by foliar spraying.

Solution: Underground fertilization of zinc sulfate, 3-4 catties per tree, it is best to apply it together with organic fertilizer in autumn;

The zinc sulfate solution sprayed in the growing season (quick effect), sprayed once every 20 days, sprayed 2-3 times in a row, and zinc sulfate can be applied underground at the same time (the effect of underground fertilizer application is slow).

Control measures: cultivate disease-free seedlings; selection of disease-resistant varieties and rootstocks; Strengthen cultivation management, improve tree disease resistance, maintain orchard hygiene, and timely control of poison-carrying insects; Perform a reasonable ring peeling to prevent the movement of mycoplasmas in the plant (but at most once a year); Injection of tetracyclines into diseased trees has a prevention and control effect, but it cannot be injected again.

How to treat jujube tree lobular disease and what medicine to use.

Hello, the best methods for jujube leaf disease are: 1. Spray with fungicide: you can use 50% carbendazim (400 times the solution) or 50% copper ions (800 times the solution) to spray Zenqin, spray once every 7-10 days, and wet the leaves of the jujube tree with water before spraying to ensure the spray effect.

2. Spray with antibacterial agent: you can use 50% chlorothalonil acetate (500 times liquid) car base or 50% ammonium nitrate (1000 times liquid) for spraying, spray once every 7-10 days, and moisten the leaves of jujube trees with water before spraying to ensure the spray effect. 3. Spray with plant growth regulator:

You can use 50% niacin (1000 times liquid) or 50% acetohumic acid (1000 times liquid) for spraying, spray once every 7-10 days, and wet the leaves of jujube trees with water before spraying to ensure the spray effect.

You can look for this.

The leaves will appear yellow-green mottled and sometimes black spots, which will cause the leaves and stems to wither and the fruits to fall off, which will seriously affect the yield of the plant.

The leaves become smaller, the leaves become deformed, the mesophyll begins to yellow, the texture of the whole leaf is uneven, and it is easier to grow on the young leaves.

After the leaf is infected, it will begin to become smaller, with obvious twisting and deformity, and at the same time, there will be some spots on the leaf, causing the leaf to turn yellow-green, especially on some delicate leaves. Even grafting can be infected with mosaic disease, and the greater the number of pests, the more severe the disease.

You can apply some alkaline fertilizer, so that you can achieve a good control effect, and it can also kill pests and diseases, the effect is very good.

After seeing this situation, we must strengthen the management of the orchard, and it is necessary to fertilize in time, we must adopt scientific pruning methods, and at the same time ensure light transmission and ventilation, and then we must also choose some high-quality seedlings, and there is to kill insects in time.

Be sure to choose the right variety of jujube trees for planting, do not apply too much fertilizer, and spray pesticides in time to prevent problems and water them reasonably.

It should be fertilized reasonably, and it should be watered frequently, and weeding should be done frequently, and it should be paid attention to pests and diseases, etc., so that it is fine, it is very good.

Pesticides should be sprayed during the growth of jujube trees to reduce the harm of mosaic disease.