What causes fruit tree leaves to wilt? Will it still survive?

The above symptoms may be a fungal disease: brown spot or spotted defoliation.

Brown spot disease: This disease mainly affects leaves, but can also infect fruits and petioles. Generally, the leaves and fruits of the lower part of the canopy and the inner chamber are the first to be affected.

At the beginning of the disease, the leaves appear black-brown vesicles or needle-like dark brown lesions, the edges are not neat, the boundary between disease and health is not clear, and the diseased leaves turn yellow and fall off in the later stage, but the lesions still remain green around them, and there are black-brown needle-like lines and fly fecal-like black spots on the surface of the lesions. It takes about 13 55 days from the invasion to the defoliation, and the field begins in May and June, enters the peak period in July and August, and stops expanding in October.

Spotted defoliation: It is caused by the infection of semi-known fungi in fungi. Among them, spotted defoliation is a virulent strain of apple wheel spot.

It can occur without a wound and is extremely pathogenic. The pathogen of apple spotted defoliation disease overwinters on diseased leaves and branches with mycelium, produces conidia in the spring of the following year, spreads with wind and rain, infects spring shoot leaves, and diseased leaves begin to appear around the flowering period, and spring shoots are the peak of damage in early and mid-July. A large number of spores are produced on the diseased leaves, and the rate of diseased leaves in the seriously ill garden is more than 50%, and the average number of diseased spots in each leaf is more than 5.

At the same time, the spores of the pathogen can be re-infected repeatedly, and the peak of autumn shoots in early and mid-September is the peak of damage. The onset of the disease basically stopped in mid to late October. Climatic conditions are closely related to the prevalence of diseases.

Generally, after the apple leaves in spring, the rain is early and abundant, and the air humidity is above 70%, and the onset is early and severe. The orchard is densely planted, the canopy is closed, the air humidity is high, there are many weeds, and poor ventilation is conducive to the disease. In addition, the epidemic of the disease is closely related to the age of the leaves, and the pathogen mainly infects the young leaves, and the old leaves that are more than 30 days old are generally no longer infected.

Different apple varieties have different disease resistance, and generally Red Star, New Red Star, Red Crown, Mutsu, Fuji, Red Fuji, Indian, Marshal, and Green Banana varieties are susceptible to disease, Golden Crown, Guoguang are moderately susceptible, and Hongyu, Zhuguang, and Asahi are more disease resistant.

The occurrence and prevalence of this type of disease are related to rainwater, tree status, cultivation management and varieties. Therefore, field management should be strengthened, so that the fruit trees can maintain a strong tree momentum, and the appropriate fruit load, if the fruit tree is weak and the load is too large, it is easy to cause early defoliation; prevention and control of canopy closure (pay attention to summer pruning); Strengthen fertilizer and water management, etc.

If it is one of these two, it can be controlled with fungicides such as Bordeaux liquid, mancozeb, chlorothalonil, etc.

The causes of yellowing and wilting are: 1. Frost damage. 2. Drought. 3. Waterlogging. 4. Lack of fertilizer (lack of iron, lack of nitrogen). The fourth foliar spray: potassium dihydrogen phosphate + ferrous sulfate, spray again every half month.

First of all, you can water a small amount of water and fertilizer, to see if he can slow down, if it is slow down, it is a lack of water, if it is not good, then generally speaking, there is a problem with the root system, dig it out and replant.

It is still possible to survive, to water properly, but also to check whether it is a problem of fertilizer, but also to check whether it is a problem of light, because the branches do not get nutrients, they will wither, do not overwater, and let the nutrients in the soil be lost.

It can be saved, when the leaves of the fruit tree wither, we can fertilize the fruit tree properly, so that it can replenish the missing nutrients, and slowly it will live.

If it withers, it can be saved, and if it lacks water, it should be watered more, and if it lacks nutrients, it must be replenished.

It can also be saved, you need to choose some high-quality soil, and then replace it, and you need to spray some organic fertilizer to solve this problem.

This year's newly transplanted fruit tree saplings grow leaves and then dry up due to:: Root damage is too heavy during transplanting, the tree is not pruned or pruned too lightly after transplanting, the root-to-shoot ratio is out of balance, and the water and nutrients are insufficient.

Remedy:Hurry up and carry out heavy pruning, leaving about 1 3 branches, if necessary, appropriate shade for about half a month, watering every 7-10 days.

The reason for the yellowing of the leaves of fruit trees and the withering of leaves lies in the following aspects: 1. Lack of nutrients Fruit trees need sufficient nutrients in the growth process, when breeding fruit trees, if the plant lacks iron, it will cause the leaves of the plant to dry up and turn yellow, and it is necessary to water the diluted ferrous sulfate at the roots of the fruit tree, and spray potassium dihydrogen phosphate on the branches and leaves of the plant to keep it green. 2. Diseased fruit trees will wither yellow branches and leaves in the case of infection with pests and diseases, when breeding fruit trees, it is necessary to use sterilized and sharp scissors to cut off all the leaves of the plant that are yellow and wilted, so as not to lose excess nutrients, and then spray carbendazim on the fracture of the fruit tree for disinfection and sterilization. 3. Too little watering, drought caused by breeding fruit trees, if too little watering, it will cause the plants to dry and yellow due to lack of water, need to water once a week when the soil is dry and no rain, keep the soil moist, but in the rainy season for the fruit trees need to drain the water in the soil.

4. The leaves of fruit trees will be yellow and dry when the light time is insufficient, and when cultivating fruit trees, it is necessary to provide them with leeward and fertile soil, and the branches and leaves of fruit trees that grow too densely should be cut to improve the light transmittance and ventilation between plants, and maintain the healthy growth of fruit trees. Dear, you can combine the actual situation, see which aspect of the above, and then take targeted measures.

In the process of planting fruit trees, some fruit growers will find that the leaves of the fruit trees will wilt and lose green and yellow, and there are many reasons for this phenomenon.

1. Lack of nutrients. Lack of nutrients is the first factor that many fruit farmers think of, in the actual planting process, the lack of nutrients will indeed cause the fruit trees to lose green and yellow, such as nitrogen deficiency, the leaves turn yellow and fall off; When magnesium is deficient, the middle leaf veins lose green and turn yellow; When zinc is deficient, there will be green loss and spots; When boron is deficient, the leaves curl up, turn yellow and lose green, and have yellow spots, but other elements can also cause green loss. This situation can be alleviated by timely fertilizer supplementation, and it is better to combine top dressing and foliar fertilization.

2. Soil problems.

When there is a problem with the soil itself, it will also cause the fruit tree to turn yellow and lose green, such as when the pH value in the soil is too high or too low, it may cause this phenomenon, under normal circumstances, when the pH value is greater than or less, it will affect the normal growth of the fruit tree, resulting in nutritional imbalance of the fruit tree. In this case, it is necessary to "repair" the soil, which is a long-term process, such as applying farm fertilizer, reducing the amount of agricultural inputs, and applying different fertilizers according to the specific pH level of the field.

3. Temperature. When the fruit tree is in a high temperature state for a long time, the respiration of the fruit tree will be greater than that of photosynthesis, and the root system will do anaerobic respiration, resulting in a decrease in the absorption capacity of the root system, affecting the synthesis of chlorophyll, and then the leaves will show yellowing and green loss. On the contrary, when the fruit tree is in a low temperature state for a long time, it will also affect the growth of the fruit tree, such as in early spring, the ground temperature rises slowly, and the leaf part has begun to grow, but the underground part is not enough to ensure the growth of the aboveground part, which is easy to cause insufficient nutrition and water, and finally the leaves appear yellow and green.

4. Moisture. If there is too much water in the orchard, there is water in the field, after the waterlogging, the roots are hypoxic, and they are forced to carry out anaerobic respiration, which will form toxic substances and affect the normal metabolism, and at the same time, some trace elements in the fruit tree will also be lost, resulting in the yellowing and loss of green leaves, pay attention to the drainage measures in the orchard to avoid long-term water accumulation.

5. Pests and diseases.

In the process of fruit tree growth, the invasion of pests and diseases will also cause the leaves to turn yellow and lose green, some pathogens and pathogens will invade the leaves, destroy chlorophyll, in addition to fruit trees, the loss of green caused by viruses is also more common, and the harm of red spiders and aphids will also cause the leaves to lose green and yellow, pay attention to timely spraying of pesticides for prevention.

There are many causes of leaf wilting, such as vitamin deficiencies or soil problems, temperature, sun exposure and moisture problems. Generally, it can survive, and the withered leaves are cut off, and under these conditions, it can still thrive.

It may be a lack of nutrients, or a soil problem, or it may be a problem of too much temperature and too little moisture, or it may be because of the relationship between pests and diseases.

It could be a pest infestation or it could be malnutrition. To survive, you only need to cut off the wilted and diseased branches to increase the fertility of the land.

This phenomenon is called bud back, and there are two possible reasons for the occurrence of bud back budding.

1. One reason is that the root and neck have suffered severe frost damage. We know that the water and inorganic nutrients (nitrogen, phosphorus, potassium, etc.) absorbed by the roots are transported upward through ducts in the xylem, while the organic nutrients (glucose, etc.) produced by the tree are transported to the roots through sieve tubes in the phloem.

Therefore, even if the root neck suffers frost damage, the water and inorganic nutrients absorbed by the roots can still be transported upwards when the tree sprouts in the spring, so as long as the shoots are not frosted, germination is not affected.

However, due to the phloem of the trunk is frozen, the nutrients produced by the leaves can not be transported to the roots, and the nutrients stored in the tree body in the autumn of last year have been exhausted, and the roots can not get new nutrients, which will cause respiratory failure, stop the absorption and transportation of water and nutrients, and the new shoots in the ground will not get water and nutrients, and the leaves and young shoots will dry up and die under the irradiation of the sun.

2. Another reason is: when transplanting fruit trees in spring, the injured roots are heavier (less capillary heels), the pruning is too light (or not pruned), and the amount of branches left is too much, resulting in the imbalance of the root-to-shoot ratio and the lack of water and nutrients. During this period, due to the dry air and strong wind, the transpiration of the leaves needs to consume a lot of water, because the high absorption power of the root system has not been restored, the water is insufficient, and the leaves and young shoots will gradually dry up and die under the irradiation of the sun.

If it is the first cause of the budding phenomenon, at this stage, the tree can no longer be saved, so it can only be abandoned. If it is the second reason for the bud relapse, there is still room for redemption. That is, to carry out heavy pruning as soon as possible, cut off 4 5 branches, and the remaining branches should also be shortened at the strong buds, maintain a suitable root-shoot ratio, and ensure the balance of water and nutrients**; And water every 7-10 days or so to ensure suitable soil moisture.

In addition, water is sprayed on the tree twice a day to reduce the temperature of the tree and reduce the water consumption by transpiration. The slow mold cavity can also be appropriately applied with water-soluble fertilizer for fertile leaves.

Sorry to hear about your fruit tree wilting. Fruit tree wilting can be caused by a variety of causes, including diseases, insect pests, and environmental stress from the environment. Here are some common ways to deal with them and suggestions that we hope will help you:

1.Observe and locate the problem: Look closely at the tree to determine if the whole tree or some branches are affected. Check for spots, insect infestations, or other visible symptoms. This will help us better understand the root cause of the problem.

2.Check the roots: Check the roots of the tree for pest attacks or root rot. If a problem is found, it may be necessary to take appropriate action, such as pruning the affected root or treating it with appropriate medications.

3.Proper environmental conditions: Ensure that trees receive adequate sunlight, the right amount of water and nutrients**. Depending on the specific tree species, adjust the frequency and amount of irrigation to avoid over- or under-irrigation.

4.Pest and disease control: Fruit trees are often susceptible to diseases and insect pests.

If signs of pests and diseases are found, they can be treated with suitable pesticides or organic control methods. Be sure to use pesticides according to the recommendations on the product leaflet and ensure safe handling.

5.Straighten out the branches: If you find an affected branch, prune it in time to ensure that the branch is in good shape and structure to promote the growth of the plant.

6.If the above methods don't work: If you still can't solve the problem after a while of hard work, I recommend contacting a local horticultural expert, agricultural agency, or fruit tree planting specialist for more personalized and professional help.

Finally, keep in mind that the health of fruit trees is a comprehensive issue that requires comprehensive analysis and treatment. Hopefully, these tips will be helpful to you and that your fruit trees will be back to health soon!

It may be because the weather is dry and there is not too much water to moisten, so that the fruit trees lack water and nutrients, you can buy fruit tree nutrient solution online, which should be effective.

Hello dear! Fruit tree seedlings can survive when they germinate and wither, and the wilting of fruit tree seedlings after germination is caused by a variety of reasons, including environmental ruin, pests and diseases, malnutrition, etc. Here's a closer look:

1.Environmental conditions: After germination, fruit tree seedlings are exposed to extreme temperatures, drought or excessively humid conditions, causing them to wilt.

If the growth environment of fruit seedlings is not suitable, their root system will not be able to absorb enough water and nutrients to maintain healthy growth. 2.Pests and diseases:

After the seedlings germinate, they are attacked by germs and insects, causing them to wilt. Common pests and diseases, such as fungal infections, bacterial infections, aphids, mites, etc., can damage the tissue structure of fruit tree seedlings, affecting their growth and nutrient absorption. 3.

Malnutrition: After the fruit tree seedlings germinate, if the soil lacks the necessary nutrients, such as nitrogen, phosphorus, potassium, etc., or there are excessive nutrients, it will cause the fruit tree seedlings to wilt after germination. Malnutrition can affect the normal growth and nutrient uptake of fruit tree seedlings, which can lead to wilting.

For the situation that fruit tree seedlings wilt after germination, measures should be taken in time to save them. First, check the growing environment of the fruit tree seedlings to ensure that they are under the right temperature, humidity and sun exposure conditions. Secondly, pay attention to the prevention and control of pests and diseases, remove infected leaves or wilted parts in time, and use appropriate plant protection drugs for control.

In addition, according to the growth of fruit tree seedlings, adjust the nutrient content of the soil per mu and provide appropriate fertilizer.