After the peaches are picked, why do the leaves of the peach tree fall out in large quantities?

Peach trees are very common in China, although the technology is relatively mature, but many growers still encounter various problems in the planting process. For example, the problem of defoliation is more common, and the causes of defoliation of peach trees are more complex.

The problem of a large number of peach trees falling leaves can be seen as a whole, and it may be due to improper fertilization, or it may be due to light. However, in terms of actual planting experience, it should be more intuitive that the large amount of leaf litter caused by bacterial perforation disease of peach trees should be more intuitive. The disease occurs in all peach-producing areas, especially in poorly drained orchards or rainy years, and if the control is not timely, it can cause a large number of fallen leaves and seriously affect the tree's potential.

The main symptoms of bacterial perforation disease in peach trees.

1. Leaf damage: There are water-stained spots on the back of the leaves, which gradually expand into purple-brown to black-brown lesions, surrounded by water-stained yellow-green halos, and then dry up and fall off to form perforations.

2. Branches are harmed: brown to purple-brown round depression lesions appear on the tips of branches. The 1 2-year-old shoots of severely planted plants die in winter until bud break.

3. Fruit damage: small black spots appear on the fruit surface, gradually showing dark purple ** sunken lesions, and the surrounding edge is water-stained. When the humidity is high, there is a yellowish-white sticky, and cracks occur when dry.

Preventive measures and prevention methods.

1. Preventive measures.

1. Pay attention to ditching and drainage, increase organic fertilizer, avoid partial nitrogen fertilizer, and prune reasonably to make the peach orchard ventilated and light-transmitting, so as to enhance the tree potential and improve the disease resistance of the tree.

2. Clear the garden in winter and spring to reduce the source of overwintering diseases. Before spraying the garden cleaning agent, be sure to cut off the diseased leaves, fruits and branches, and burn them or bury them deeply.

3. For peach orchards with high air humidity, grass ash can be sprinkled on the ground of the orchard, which can not only reduce the air humidity in the orchard, but also supplement the plants with potassium fertilizer.

Second, prevention and control methods.

1. ** plan: when the disease is slight, spray with biological pesticides diluted according to 400 times, and use the drug once every 10-15 days; When the condition is severe, dilute 300 times the solution and spray once every 7-10 days.

2. Spray protection: spray 5 Mido stone sulfur mixture or 45% crystal stone sulfur mixture 30 times and 30% green debao glue suspension 400-500 times before germination. After germination, spray 3000 times of 72% agricultural chain demand soluble powder or spray 600-800 times of 20% molkarazole wettable powder, and 200 times of 4% chunleimycin wettable powder.

Spray 1 time in half a month, a total of 2-3 times.

In general, bacterial perforation disease of peach trees is more common in the planting and production process of peach trees, which often causes a large amount of defoliation, which affects the tree strength and yield. Therefore, growers must do a good job of prevention, and when the disease occurs, it must also be prevented in time.

Yellowing and falling of peach leaves, nitrogen deficiency, leaf diseases, root diseases, etc., will cause the leaves of peach trees to yellow and fall, but the yellowing and dryness, the biggest is caused by iron deficiency.

I'm talking about peach leaves being plucked, and peach blossoms falling?

If photosynthesis is insufficient, it must have an impact, why are the leaves lost?

Of course there is an effect, the leaves are photosynthesized.

Summary. Hello, peaches are easy to rot when picked, mainly because:

Hello, peaches are easy to rot when picked, mainly because:

1. The reason for peaches is that peaches are not like grapefruit, watermelon, cantaloupe and other fruits, their skin is thinner, and the peach flesh is soft and juicy, which is easily damaged by bumps and trauma, and is very easy to be invaded by bacteria, resulting in rotting and deterioration of peach flesh. 2. The reason for preservation is that the temperature is high in summer, and the peaches need to be stored in the refrigerator and freezer, if they are placed outdoors, exposed to the sun or in a hot environment, the peaches will rot quickly, especially the peaches with a soft texture, and they will be rotten after a day of high temperature. 3. Planting reasons: Some peaches are sold during the planting period, such as damage, such as insect bites, rotten marks, sickness, etc., and they can not be stored for long after picking, such as peaches with rotten points, even if they are placed in the refrigerator, they are also prone to bacterial invasion, and they will rot in about 2 days, while intact peaches can be stored in the refrigerator for about 1 week.

Solution: 1. Low temperature storage The low temperature environment can prolong the shelf life of peaches, generally fresh peaches are suitable for being placed in the refrigerator room at a temperature of about 5 degrees, and the peeled peaches can be put into a fresh-keeping bag for a month of refrigeration. 2. Use peaches as soon as possible is generally used to eat and sell wisdom, if the flesh of the peaches you buy is softer, then you should eat them as soon as possible, such peaches are more likely to rot, and the peaches that have been rotten can be thrown away as fertilizer to avoid the remaining peaches infected with bacteria and rot.

Leaf loss of peach trees may be the cause of infection, resulting in leaf damage and leaf fall, which should be sprayed in time, mainly for prevention. It may also be the cause of insect infestation, such as red spider spider and whitefly, determine the type of insect pest, and spray insecticides accordingly. It may also be the reason why the water is rainy and waterlogged, and the roots cannot breathe, so it needs to be drained in time.

Or it may be the cause of a lack of nutrients, which should be fertilized according to growth.

The reason for the loss of leaves in the peach tree, how to deal with it.

1. Infection with diseases.

If the peach tree is infected with bacterial perforation, it can invade the leaves and cause defoliation. It should be pruned reasonably to eliminate the source of infection and improve ventilation and light transmission conditions. For the disease of peach trees, mainly prevention, spray 5 degrees of stone sulfur mixture before germination, spray 5 degrees of stone sulfur mixture after germination, 600-800 times of chlorothalonil solution, 65% mancozeb 500 times solution, spray once every half month.

Peach. 2. Infection with insect pests.

In addition to diseases, if peach trees are infested by spider mites and whiteflies, they will also absorb the sap from the leaves, causing the leaves to turn yellow and fall off. You can first check whether there is an insect pest, remove the leaves that are infected with insect infestation, if you are infected with red spiders, you can spray dicofol, nisolone, mite net and other agents, if infected with whitefly, you can spray 1000 times the moth fly fast kill, 800 times cypermethrin, 1000 times the quick kill, both sides should be sprayed.

Peach. Third, the water is rainy and waterlogged.

Too much watering, or heavy rainfall, can cause water to accumulate in the soil, causing root respiration to be affected and leaf dropping. Watering should be controlled and drains should be dug in time to facilitate the drainage of stagnant water.

Peach. Fourth, lack of nutrition.

Peach trees need enough nutrients for normal growth, flowering, and fruiting, and if the fertilization is insufficient and a certain nutrient is missing, the leaves will yellow and fall off. Fertilization should be done reasonably, and a certain nutrient element should be applied in a targeted manner.

Recently, many people have been paying attention to their peach trees starting to lose a lot of leaves. This is a puzzling question, as peach trees usually do not lose their leaves during this season. So, what exactly is the reason for this problem?

Possible causes.

First of all, the cause of a large amount of defoliation may be caused by parasites or viruses. If you notice that the branches of your peach tree are turning yellow, or you see some black spots, then it is likely that the germ is infecting your peach tree.

Another possibility is that the roots of the peach tree have been damaged or overwatered, causing the tree to start losing its leaves. Root injuries may cause the tree to not absorb enough water and nutrients, which may affect its growth and health.

How to fix it. If your peach tree is losing a lot of leaves, then you need to take some steps to fix it. First, you can search for some chemicals to kill germs or parasites. However, these medicines can have negative effects on the environment and health, so use them with caution.

Another way is to prune off the yellowed parts and take some steps to increase the nutrients and moisture of the tree. For example, put some organic fertilizer around the roots of the peach tree and water it daily. This will help the tree to improve nutrient and water absorption.

Precautionary measures. Of course, prevention is the best approach. If you want to keep your peach tree healthy, then you need to fertilize regularly and keep the soil around the roots moist.

If you notice that the tree is damaged, then you need to take measures as soon as possible to prevent the invasion of germs and parasites.

Conclusion. In conclusion, when your peach tree suddenly loses a lot of leaves, you need to take action as soon as possible. By figuring out the possible causes, and taking some steps to fix the problem. If you're not sure how to do it, consult a professional for help.

Causes of yellowing of peach leaves

1. Repair the slippery blue cut excessively.

A large number of green leaves and branches are cut off, resulting in the sudden loss of a large number of nutrient-producing leaves, and the respiration, photosynthesis, and transpiration are seriously weakened. At the same time, the ability of the root system to absorb nutrients also decreased sharply, and the nutrients were seriously insufficient, which in turn caused the phenomenon of yellowing of leaves.

2. Lack of oxygen in the root system.

The root respiration of peach trees is relatively active, and the soil moisture saturation, serious compaction, and poor air permeability during the growth period will cause insufficient oxygen, and the root system will be hindered due to respiration, resulting in yellowing of leaves.

3. Peach trees lack iron.

The green color of the leaves is mainly the color of chlorophyll, and the synthesis of chlorophyll must have the participation of iron, if the iron element is deficient, the chlorophyll synthesis is blocked, and the yellow lifting of the leaves makes it roll.

4. Wrong fertilization.

Excessive application of nitrogen or phosphate fertilizers can also affect the absorption of iron by the peach tree, resulting in yellowing of the leaves. There are also peach orchards that are not ripe for application of organic fertilizer or uneven fertilization, which damages and burns the roots, causing the leaves of peach trees to turn yellow.

5. Pests and diseases.

Some peach trees suffer from root cancer, root rot, gum disease, root-knot nematodes and other root diseases and pests, which weaken the tree, affect the growth of the root system, and destroy the root system's ability to absorb nutrients, resulting in insufficient nutrients and yellowing of leaves.

The solution to the yellowing of the leaves of the peach tree

1. Reasonable repair.

The first trimming amount of mid-early ripening peach after fruit picking should be light, as long as the peripheral and upper parts of the individual Wang branches that affect the light, the inner light can be improved, and the amount of pruning can not exceed 10% of the total branch amount of the whole tree. Prosperous trees with insufficient chemical control can be pruned with leaves 30 days before defoliation.

2. Scientific water and fertilizer.

Irrigation should not be flooded with water throughout the garden, irrigation between the rows and between the plants should be alternated, the first irrigation between the rows is not irrigated, the next irrigation between the rows is not irrigated. At the same time, it should be noted that after irrigation or heavy rainfall, the soil is loosened to enhance soil permeability. In terms of fertilization, it can increase the application of decomposed farmhouse fertilizer, such as circle fertilizer, manure, manure, green manure, etc., to increase the content of soil organic matter and improve the physical and chemical properties of the soil.

Most farmyard fertilizers are slightly acidic, which can improve alkaline soils and reduce soil iron fixation.

3. Iron deficiency and iron supplementation.

Dig 8 to 10 trenches (20 to 30 cm deep) around the diseased peach trees, and then apply them with 2% ferrous sulfate solution in concentrated holes, 6 to 7 kg per tree, which can well prevent and control iron deficiency yellow leaf disease.

4. Rational use of drugs.

Check whether the seedlings are diseased and damaged, soak the roots with 1% copper sulfate solution or 2% lime water for 1 minute, and then plant, if the root cancer plants are found, remove the root nodules with a quick knife, and disinfect with 1% copper sulfate 100 times.