Peach tree rot disease is a highly harmful branch disease, what are the conditions for its occurrenc

You're talking about rotten peach fruits! Look at the ** you photographed is the fruit, so I thought of the problem of fruit rot, and the tree will not have rot disease!

Many fruit farmers have suffered such losses, watching the peaches grow well, and the fruits are also growing well, and the fruits are also growing well, which looks like a bumper harvest. Watching the fruit on the tree grow day by day, I began to think that I would definitely be able to sell it for a good price today, and I should add some new furniture to my home. The joy in my heart is self-evident.

But when it was time to harvest, I suddenly found that the fruits were rotten one by one, and maggots were born in the peaches when I cut them. Serious will not have a good one. What's going on?

If you look closely, you will see that each fruit has one or several small holes in it. How did these little holes come about? It's a pest, and we call it a fruit fly.

The fruit fly is a very cunning animal, and it quietly lays eggs on the peaches when they are almost ripe. An adult fruit fly can lay more than 4,000 eggs and reproduce very quickly. Drosophila eggs can emulsify larvae at about 22 hours under suitable conditions.

These larvae burrow into the peach from the surface of the peach and start its life.

The larvae molt for the first time after 24 hours and continue to grow to reach the second larval development stage. After three larval stages and a four-day pupal stage, after one day at 25 years old, it will develop into an adult. Drosophila reproduces very quickly, reproducing one generation in about 10 days at a temperature of about 25, and the adult lifespan is 8 to 10 days.

So, when you see a peach rotting and maggots in it, it's a fruit fly. Because fruit flies lay a large number of eggs, one can lay more than 4,000 eggs, so if there is a group of peach trees in a forest, then all of your peach trees will be killed, and even a good one will not be there. In addition, the reproduction ability of fruit flies is strong, and the larvae can develop into adults in one day, which is also a speed, even if there is a fruit fly in the orchard, it will harm the entire orchard.

Peach tree rot disease, also known as dry blight, is a disease that occurs on peach trees caused by the infestation of drupe black rot. The main damage to the trunk and main branches causes the bark to rot, resulting in dead branches and dead trees, especially on the trunk in the southwest of the ground, which occurs more and causes great harm.

It is because the soil is watered too much, the weather is cold for a while and hot for a while, and if you don't spray pesticides on time, you will be prone to disease.

It may be because the environment is very humid, or because there is not enough light, or because the soil fertility is not enough, or because the pesticides are not sprayed in time, and the pests are not removed in time.

You can choose to cut off all the harmful branches, and then spray some pesticides, and at the same time you should also output some nutrient solution, so that you can have a good adjustment.

Peach tree rot disease is a more harmful branch disease, what do you know about it?

Peach fruit tastes sweet and sour, so what do you know about the rot disease of peach trees?

The first peach dry rot mainly occurs on the trunk and main branches of old peach trees, centered on the stomata, dark brown, and moist surface. There is yellow viscose under the cortex. The lesions are long or irregular, usually confined to the cortex, but can penetrate deep into the xylem of aging trees.

In the later stages of the disease. Sometimes there are several small black spots densely, and if the peach tree is severely infected with wood rot, the peach tree should be uprooted in time and destroyed from the orchard. Be sure to thoroughly clean the diseased branches of the peach tree, and no diseased branches can be left.

Second, peach rot is an important peach branch disease that occurs in cold regions, and it can cause premature senescence, dry branches, reduced branches, and even the death of the entire fruit tree. Once a peach tree is found to be infected with wood rot, the infected shoots must be cut off immediately, the rotten wood removed, and then disinfected with tar. After disinfection, the wound must be wrapped with some healing agent or something else to prevent the wound from being reinfected with the wood rot virus.

Thirdly, the disease usually infects smaller branches first. When the ulcer spreads around the branch, the branch dies and causes symptoms of branch wilting; Causes the gradual death of major branches and trees. On the main stem and trunk, a large glue stream is discharged, and the diseased tissue then decays, is yellowish-brown, and rapidly expands to the xylem.

On weak branches, the lesion develops longitudinally, and the leaves appear yellowing, wilting, and cracking.

Fourth, providing sufficient water for peach trees is an important factor affecting the growth of peach trees, so it is necessary to pay attention to water management when planting peach trees. There should be no too much water in the peach orchard, neither too much nor too little. We have to maintain the most suitable water content.

When the rain is heavy, we have to dig more ditches to drain the rainwater accumulated in the peach orchard and prevent the peach orchard from accumulating. When it is hot in summer, pay attention to watering more. Evaporates faster on hot days.

We must pay attention to replenishing the moisture of the peach tree in a timely manner.

Rot disease is more common in the main and long branches, and can also cause root rot in the early stages, and often cause the long branches or even the whole fruit tree to die in the middle and late stages. In the early stages of the disease, we are generally negligent and careless because it is not too obvious. The roots of the diseased tree will initially turn light brown with a slight downward dentation, and there will be pale yellow sap discharge, and eventually it will turn purple-brown and wither.

If we look at it, we will see that the lesions are tan and smell of sake lees. It is also caused by a parasite, which enters through the pruning or cutting of fruit trees, and some trees are susceptible to the disease when their resistance is weakened.

In addition, in areas with large temperature differences, after the temperature is too low at night to freeze the fruit trees, pathogenic bacteria will enter from the wound, and the occurrence and infection of this kind of disease are mostly in spring and autumn. Immediate prevention, often check the branches of the peach tree, if you find diseased spots, immediately wipe the green will make the sick skin quickly wither, let the sick skin fall off, and at the same time the green will be disinfected and sterilized. Fourth:

After pruning peach branches in winter, it is necessary to wipe the anti-corrosion film at the cutting and trimming mouth to maintain the growth and development of the wound mechanism, avoid bacterial infection, completely eliminate dead branches and leaves, and treat them in a centralized and unified manner to reduce the origin of pathogenic bacteria.

After the peach fruit is infected by bacteria, it first produces small annular lesions on the surface of the fruit, which are slightly indented, light brown in the outer field, and gray in the middle. After that, the lesion expands rapidly and the dent worsens. In a damp and cold environment, a grayish-white mold layer is formed on the lesions, which are the conidia and conidia of the pathogen.

In the middle and late stages, the lesions are dehydrated, and the fruit is soft, milky white, like dead wood. The new shoots are killed, resulting in dark brown spots and ulceration. The leaves are infested, and the lesions are nearly oval, black-brown.

Fruit tree trunk rot, also known as gum disease, most of the fruit tree trunk rot occurs on the main stem of fruit trees with relatively large crown diameter and some thicker branches. At the initial stage of the disease, the lesions are convex with the vent as the core, brownish-black, and the surface is moist. A yellowish viscous adhesive underneath the epidermal layer.

It is generally confined to the epidermis, but senescent branches can penetrate deep into the phloem.

In the middle and late stages of the disease, a large number of fusiform or near-circular black spots emerge on the surface of the lesions, which are discharged from the cracks in the roots, resulting in the decline of the fruit tree, and in severe cases, it will also cause all branches or the whole tree to wither. Most of the fruit tree trunk rot occurs on the main stem and branches of fruit trees with relatively large crown diameter. At the initial stage of the disease, the lesions are convex with the vent as the core, brownish-black, and the surface is moist.

A yellowish viscous adhesive under the epidermal layer of the lesion. Lesions are long or irregularly shaped, usually confined to the epidermis, but senescent branches can penetrate deep into the phloem. After that, the lesion slowly becomes indented, dark brown, and a relatively large gap occurs.

In the middle and late stages of the disease, a large number of fusiform or near-circular black spots (sub-seats) emerge on the surface of the lesions, and sometimes multiple black spots gather together and emerge from the cracks of tree roots, and the size is generally 1 8 mm. The large trees that have been damaged for many years have caused the plant to be extremely weak, and in severe cases, all branches or the whole tree have withered.

We should find out in time, cut down diseased branches, fertilize peach trees in a targeted manner, apply white powder to kill diseases and insects at the place where we cut down diseased branches, often detect pests, and spray pesticides; The main cause of the disease is pests.

Enhancing tree momentum is key to preventing the disease from occurring. Root cause: Peach tree rot disease, also known as dry blight, is a disease that occurs on peach trees caused by the infection of drupe black rot crustacea.

It is mainly to solve the problem of bacterial infection, most of which are caused by drupe black rot shell fungus.

The aerial part shows that the plant grows slowly, the leaves are small and narrow, the leaf color is yellow, the leaves are curled, and the flower buds are not full. The root is manifested as root dysplasia, few new roots are produced, and egg-sized cancerous tumors appear in the main root and lateral roots to varying degrees, which are spherical or oblate spherical, mainly harming the roots and root necks of peach, apricot, plum, cherry, apple and other fruit trees.

Tumors of various sizes are formed at the affected site, spherical to oblate-spherical, colostrum white or slightly reddish, and then gradually turn brown to dark brown, with a rough and uneven surface.

The occurrence of diseases is closely related to soil moisture, temperature and pH. 22 The temperature soil and 60% humidity soil are very suitable for the invasion of pathogens and the formation of cancer, the neutral and alkaline soil is conducive to the occurrence of diseases, various physical injuries are conducive to the occurrence of diseases, and the soil is clay. For a large area of peach orchards with severe yellow leaf disease, 100 200 kg of sulfur powder can be used per mu, which can reduce the soil alkalinity by 1 2 degrees.

It is forbidden to irrigate the ground with large salt well water, so that the alkali is flooded without the effect of reducing alkali.

This disease is mainly from the source, to choose high-quality seedlings, and to root cancer rather soak the roots, do not replant, once found after planting this disease, immediately pull out, hole and surrounding soil for disinfection. The high pH content in the soil is the main reason. Most of the soil in the north is alkaline, Yuncheng is located in the southernmost part of Shanxi, belongs to the Yuncheng Basin, and the salt lake under Zhongtiao Mountain stretches for more than 130 square kilometers.

The pH value of plains and depressions is around.

There are mainly frost damage, root nodules, man-made injuries, etc. Malnutrition during the growing season can also cause yellowing of leaves, so it is necessary to replenish nutrients in time.

Mainly increase nitrogen fertilizer, combined with watering and irrigation. To improve the lack of nutrient and physiological diseases of peach trees, after soil improvement and waterlogging disaster prevention and control measures, peach trees can rejuvenate and vigor, increase the life of peach trees and prolong the vigorous period of peach tree fruiting.

If the disease occurs, the growth rate of the roots of the peach tree is particularly slow, and the leaves will also appear yellow, and the leaves will also wither, with small spots, and may wither and die in a short time.

A nodule will be formed, there will also be deformities, the roots will die in a large area, and the phenomenon of rot will also occur, and it will also cause a large area of peach trees to die, and the leaves will die in a large area.

When growing, there will be a growth rate, especially slow, and the leaves will also appear yellow, curled, withered, and there is no way to flower and bear fruit.

First of all, the peach tree will wither, and it will lack water, it will not look nutritious, and at the same time, it will not be able to grow bigger and better fruits, and it will die easily.

It is found that there are some tumors in the roots of this plant, and the tumors will gradually harden, the surface will also have cracks, very dry, the leaves of the plant are yellow, and the feeling of lack of water.

The carcinogenesis of peach roots mainly occurs in the root neck, filamentous roots and lateral roots, and the tumors mostly take the root neck and roots as the axis, the ring and lateral roots, spherical or oblate spherical or amorphous, the number of L-2 is small, and the number of L-0 is more than 10. The size is also very different. These little guys are like beans.

Roots: After the roots are killed, she forms cancerous tumors that are small at first and then continue to increase. The root knots are large, hard, and lignified.

The tumour is inconsistent in shape, usually spherical or oblate, or it can heal with each other to form amorphous.

They vary in size, from as small as a bean to as large as a walnut. Symptoms: The disease occurs mainly in the neck of the root, and after being killed, the root forms cancer, which is small at the beginning and increases as the plant grows.

The shape, size, and texture of the tumor depend on the host. Typically, the nodules of Madeira hosts are large, hard, lignified, and the tumors are small. The root nodules of the herbaceous host are small and soft.

Peach root cancer is a bacterial disease that usually occurs in the taproot of the rhizome, including above and below the soil, and more often under the soil, but also in the lateral roots, but the incidence is relatively small. Its shape is spherical, oblate spherical or amorphous, and varies in size. Cancerous tumors are as small as beans and small in kind.

The next year, the peach tree bears fruit only after flowering, and the leaves on the tree are yellow, the edges of the leaves are brown, and the leaves fall off.

<> some trees have leaves that turn yellow at the end of autumn, and the leaves are yellow. But this is not easy to attract attention, some trees have necrotic spots on the edges of the leaves, and cancer in the roots of the peach tree can be infected by cancer bacteria from the roots throughout the growth of the peach tree. The location and degree of damage vary at different stages of growth, mainly in the root neck and sometimes in the lateral roots.

When the pH value is below 5, the root cancer disease (commonly known as root knot disease) of the fruit is the "cancer" of the plant. After root cancer in fruit trees, dark brown tumors grow in the roots. In severe cases, the leaves will turn yellow and wilt very early.

The tree is weak, the fruit is small and sour, and the whole plant dies. Radicleocarcinoma is a fast-spreading disease worldwide. Peach trees bear fruit early.

In general, the fruit can be seen in two years and can be produced year after year. However, peach trees have many diseases and serious dangers. On the basis of strengthening cultivation management and enhancing the potential of trees, attention should be paid to the cleaning of autumn and winter orchards and the scientific application of pesticides.

Root cancer in fruit trees can occur during an astonishing growing period, from the sowing stage of the fruit tree to the madura stage, but the most serious damage is in the sowing period of nursery gardens and fruit trees, and the most striking feature of the disease is that tumors of different sizes grow on the roots and stems of fruit trees (i.e., tumors grow on our common roots).