What is the silvery white front of the leaves of the peach tree? How can it be prevented?

What is the silvery-white front of the leaves of the peach tree? How can it be prevented?

There are many peach tree diseases and insect pests, such as perforation, anthracnose, scab, gum disease, leaf shrinkage, mosaic disease, red leaf disease, etc., common leaf pests and diseases such as aphids, red spiders, various deficiencies, bacterial perforation, etc., if not prevented and controlled in time, the leaves can not carry out normal photosynthesis, lack of nutrition, and the quality of the fruit will definitely not go up. The front of the leaves of the peach tree mentioned by the subject is silvery white, and in my cognition, I have only seen it 1 or 2 times, which is the silver leaf disease of the peach tree.

The symptoms of peach tree silver leaf disease that I have seen are like this, I don't know if it is the same as your peach tree disease. If not, please correct it.

First, the symptoms of peach tree silver leaf disease.

The silvery-white leaves are brittle and break when broken, and the closer to the base of the new shoots, the more obvious the leaf disease is. Silvery-white is mainly on the front of the leaves.

In fact, there are no pathogenic bacteria in the diseased leaves, and it is a disease manifestation that is different from ordinary diseases. The germs mainly invade from the wound, such as the grafting joint, the cut, the mechanical wound, etc., and the peach tree without the wound will not get the disease. The leaves near the wound site showed symptoms first, and there was more rain in spring, silver leaf disease occurred more often, and the incidence of drought in spring was relatively rare.

So how do you prevent it?

Second, prevention and control measures.

1. When pruning the diseased peach tree, completely remove the dead branches and dead trees, and burn them to eliminate the germs.

2. If there are poplars, willows or other fruit tree stumps, trunks, etc. around the peach orchard, pay attention to removal, because the silver leaf fungus will overwinter on these things.

3. After pruning the peach tree, the wound is smeared with thiophanate-methyl wettable powder, with a concentration of 100 times, to prevent the wound from being infected with germs. Or apply the wound with stone sulfur mixture and other wound protectors to prevent the growth of germs.

It is difficult to develop peach trees, because the silver leaf pathogen invades the inside of the branch from the wound, the leaf is only a symptom, the source of the disease is in the branch, and it is difficult for all fungicides to reach the inside of the branch.

I don't know what kind of fungicide can ** peach tree silver leaf disease now, anyway, the peach tree of that household has exhausted all kinds of means, and finally his peach tree has died in 3 years, and now it has been changed to grain land.

3. Strengthen fertilizer and water management, enhance the tree potential of peach trees, and improve disease resistance.

In short, peach tree silver leaf disease, the disease is in the trunk, the leaves are silvery-white, relying on the leaves to spray fungicides is not effective, even the surface may not be cured.

1. After the peach tree leaves have fallen leaves, the garden is cleared, and the diseased leaves and fruits are burned in a concentrated manner to reduce the second source of pathogens.

2. Spray 5 degrees of stone sulfur mixture in the early stage of peach bud expansion to eliminate overwintering pathogens.

3. In the early stage of powdery mildew, it can be sprayed to Baumé stone sulfur mixture, or 15% wettable powder powder rust 2000 to 3000 times liquid, or 1500 to 2000 times methyl tobuzin, sprayed 2 3 times, 1 time 10 15 days.

4. Strengthen the management of fruit trees, increase the application of organic fertilizer, phosphorus and potassium fertilizers, reduce the amount of nitrogen fertilizer, enhance the tree potential of fruit trees, improve disease resistance, do a good job in orchard drainage, avoid water accumulation in the orchard, and reasonably prune fruit trees to improve ventilation and light transmittance.

The whitish leaves of peach trees can be caused by a variety of diseases and environmental factors, among which the more common ones are:

1.Powdery mildew: Causes a white powdery substance to appear on the leaves, branches and inflorescences of peach trees, affecting photosynthesis and causing whitening of leaves.

2.Thin rust: It causes yellow spots and brown rust spots on the surface of peach leaves, and in severe cases, the hidden leaves will turn white, affecting plant growth.

3.Persimmon insects: Persimmon insect larvae of peach trees can suck the sap of plants that are as poor as those of plants, causing the leaves to turn white, dry up and even die.

4.High temperatures, lack of water and lack of fertilizer: If the temperature is too high, the soil is dehydrated or lacks nutrients, it can also cause the leaves of peach trees to turn white.

All of the above causes may cause the leaves of peach trees to turn white. You can carefully observe whether there are other abnormal phenomena in the leaves, such as yellowing, spots, wilting, etc., and then carry out targeted **. If you are unsure, it is recommended that you consult a professional horticulturist or plant pathologist for help with the diagnosis and**.

The yellowing and whitening of peach leaves is due to the fact that the iron element is fixed by the lead of the branches due to soil salinization, which causes the yellowing of this Zen; Excessive fertilization of nitrogen dust fertilizer leads to antagonism of other trace elements, ** imbalance, resulting in yellowing; Diseases such as root rot cause yellowing. Irrigate the roots with methamethoxaline, increase organic fertilizer, and spray ferrous sulfate or compound micro-fertilizer on the foliar surface.

Hello, I am happy to answer for you: the yellowing of the leaves of the peach tree and the whitish leaves may be caused by pests and diseases, malnutrition or environmental factors. It is recommended to conduct a pest and disease inspection first to confirm whether there is a pest or disease attack in the late life, and if so, you can use the corresponding code to guess the insecticide or fungicide**.

At the same time, it is also necessary to pay attention to supplementing peach trees with sufficient nutrients, such as fertilization, supplementation of trace elements, etc. If the problem persists, it is recommended to ask a professional gardener to conduct an on-site inspection and diagnosis, and provide the corresponding ** plan.

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In view of the problem of yellowing and whitish curly leaves of peach trees, the following measures can be taken. First of all, observe whether the yellow-rolled whitened leaves are attacked by pests and diseases, and if there is a need for pest control, pesticides can be used to spray. Secondly, to check whether there is a lack of nutrients and water in the soil, it is necessary to carry out soil conditioning in time, apply fertilizers, and maintain sufficient water sources.

In addition, you can use some bio-organic fertilizers, such as raw fertilizers, to improve the soil quality and make the peach tree nutrient-rich. Yellowing of peach leaves and whitish curls are generally caused by a variety of reasons. In addition to the pests and diseases, soil nutrients, and water scarcity mentioned above, there are several general causes.

First, the leaf dryness and damage caused by too low or too high temperature can be improved by adjusting the ambient temperature and moisturizing measures. Second, the over-fertilization and over-watering caused by excess nutrients and root fatigue can be solved by reducing fertilization and controlling the amount of watering. The third is that the light is insufficient, so you can prune the branches, move the planting position or increase the lighting equipment to improve it in a timely manner.

To sum up, in view of the problem of yellowing and whitish leaves of peach trees, it is necessary to conduct a comprehensive analysis according to the specific situation, find the general causes and take corresponding measures to adjust and improve. <>

Summary. Hello, glad to answer for you. At the end of March every year, the old warped bark and dry glue of the peach tree are scraped off, and a few cuts are made, and bactericidal drugs are applied, such as 70% methyl tobuzin, 5 ° be stone sulfur mixture, 50% antibacterial special, etc.

At the same time, the pest control is carried out, and after the peach aphid and peach tumor aphid hatch, spray 50% anti-aphid 2000 times solution and 20% pyrethrin 3000 times solution in time.

What is the deal with the white colloids on the leaves of the peach tree? What kind of medicine is used?

Hello, it is a pleasure to answer the type of high slip for you. Peach tree flow gum refers to the peach tree outflow of frozen colloids, should be timely prevention and control, at the end of March every year, the peach tree disease part of the old warped bark and dry glue scraped off, scratch a few cuts, apply fungicidal drugs, such as 70% methyl bratobuzin, 5 ° be stone sulfur mixture, 50% antibacterial special, etc. At the same time, the pest control is carried out, and after the peach aphid and peach tumor aphid hatch, the 50% anti-aphid 2000 times solution and 20% pyrethrin 3000 times solution are sprayed in time.

I'm talking about the leaves.

Hello, the white colloids in the leaves of the peach tree are caused by poor growth.

Summary. The causes of the leaves of peach trees vary from one to the other, but they can be caused by a lack of nutrients in the soil, lack of sunlight, or pests and diseases.

Hello to the family, I am happy to answer for you I am Mr. Wei, the reasons for the whitish leaves of peach trees vary, which may be due to the lack of nutrients in the soil, or the lack of sunlight or the invasion of pests and diseases. Another reason is the natural decline of the leaves of the peach tree due to aging. I hope mine can help you, I wish you a happy life, if you need to consult me.

Can you tell us more about that?

The causes of the leaves of peach trees vary from one to the other, but they can be caused by a lack of nutrients in the soil, lack of sunlight, or pests and diseases.

It may be that the above-ground part is pruned too much, and there are very few branches and leaves left in the above-ground part, so the above-ground and underground parts will lose balance. In turn, a large number of roots die, which leads to overall nutritional imbalance. This is the time when the growth is rapid, which can cause the leaves to turn yellow.

It may also be mainly due to physiological reasons such as nitrogen deficiency and iron deficiency. Early defoliation disease, the tree body is too dense, and the lack of light can also cause yellow leaves and leaf loss.

Peach Planting Management:

1.Qing Yuan. Correct and reasonable garden cleaning is very important in fruit tree production, which can reduce the number of pathogenic bacteria and overwintering insects in the coming year, and reduce the labor input of fruit farmers. After the peach tree leaves fall, the peach orchard needs to be sterilized, and the diseased branches, fallen leaves, weeds, and diseased dead fruits are removed from the garden and burned after winter pruning, and then sprayed with stone sulfur mixture. In early spring, the garden should also be cleared, and the most basic insecticide must be indispensable.

2.Watering. When planting peach trees, we should also pay attention to the use of high-quality planting techniques, watering should be according to the climatic conditions, watering more in drought, watering should be timely, and watering should be no or less watering in the rainy season. In the south, waterlogging is prone to occur in summer, so it is necessary to use ridge forming to reduce the amount of water stored in the field and avoid root rot. In arid areas, it is necessary to use film mulching to reduce water loss, and at the same time, it can also be sent to the pit to store water.

3.Fertilize. In the process of growing early-maturing varieties, it is necessary to pay attention to the use of organic fertilizer, and the number of fertilization is small, while the late-maturing peach needs to be fertilized many times and the amount of fertilizer is also large. If you feel that there is still room for improvement in the yield of peach trees, you can also increase the amount of fertilizer appropriately. In the fruit expansion period, it is necessary to pay attention to the strength and frequency of top dressing, observe in time, and deal with it immediately if it is found that there are symptoms of lack of fertilizer.

Reasonable fertilization in the whole growth cycle of peach, suitable for topdressing with green water-soluble fertilizer, fertilization needs to adopt the method of thin fertilizer diligently.

4.Pest.

During the growing season, peach tree pests and diseases are frequent, and they also need to be controlled in many ways.

Hello, the appearance of white spots on the leaves of peach trees can be caused by a variety of factors, such as insect pests, diseases, lack of moisture, etc. Common insect pests include aphids, whiteflies, etc., which produce white powdery objects on the leaves of peach trees; Common diseases include powdery mildew, anthracnose, etc., which cause white spots on the leaves of peach trees; If the peach tree is in a state of water scarcity for a long time, the leaf bleaching phenomenon will also occur. To solve this problem, you first need to confirm what caused it.

If it is a pest, it can be controlled by organic insecticides, biopesticides, etc. If it is a disease, disease management can be carried out in time**; If there is not enough water, you can pay attention to watering in time to keep the soil moist. At the same time, the management of peach trees can be strengthened, their environmental hygiene and healthy growth can be maintained, and the occurrence of pests and diseases can be prevented.