What to do if the leaves of domestic citrus are yellow and deciduous in winter?

Measures to prevent citrus winter defoliation.

Enhance tree nutrition.

For the mediocre trees that have borne fruits, apply winter fertilizer in time after harvesting.

For weak trees, a small amount of water-soluble fertilizer can be applied one week before harvesting, and then winter fertilizer can be applied before the dormancy period.

For the trees that remain fresh, the fruit trees should be drenched with organic liquid fertilizer in mid-December to supplement the nutrients consumed by the fruit hanging on the tree for a long time, so as to facilitate the recovery of the tree.

Pay attention to the cold and keep warm.

The temperature is low in winter, and citrus is susceptible to cold and frost damage, especially the trees that smoke winter shoots are more susceptible to frost. Freezing can cause the tree to lose its leaves, freeze to death on the branches, and even die on the tree.

Specifically, it can be protected from cold by soil cultivation, film mulching and other measures.

Control pests and diseases.

Spider mites, anthracnose, lipid spot macular disease, etc. are important reasons for a large number of citrus leaves in winter and spring, and attention should be paid to prevention and control.

For defoliation caused by nematode disease, pay attention to the application of pesticides after application to help restore root vitality.

Standardize agricultural operations.

Rational use of fertilizer to avoid pesticide damage and fertilizer damage.

Drought not only affects the vitality and absorption of the root system, but also easily induces red spiders.

If defoliation is caused after circumcision, foliar topdressing should be carried out on the circumcised branches in time and the wound should be bandaged with green film or electrical tape to facilitate its healing.

Causes of abnormal leaf drop in citrus winter

1. Nutritional deficiencies.

When citrus lacks trace elements such as nitrogen, phosphorus, potassium and calcium and boron in winter, it will cause yellowing and falling off of leaves, which is one of the main reasons for citrus leaf fall.

2. Water imbalance.

When the soil is too dry, the root growth of the plant is inhibited, and when the evaporation of the plant is greater than the absorption of the root system, then the leaves will wilt and curl, and in severe cases, the petiole will fall off. In addition, when the water is accumulated, the permeability of the soil is poor, which inhibits the respiration of the root system, and the roots will rot after a long time, which will also cause yellowing and defoliation of the above-ground branches and leaves, and the dead plants in severe cases.

3. Poor lighting.

The growth and development of leaves is inseparable from photosynthesis, if the plant is closed and the light is insufficient, then the inner chamber leaves will increase and become thinner. The leaf color is dull or even yellowing. In winter, the light is already weak and does not improve for a long time, which will cause a large number of leaves to fall in the inner branches.

4. Keep the hazard.

During the citrus growth period, red spiders, scale insects, anthracnose, and yellow spot disease will cause the greatest harm, and a large number of leaves will be lost in spring and winter if not controlled in time.

5. Other reasons.

In addition, pesticide damage, fertilizer damage, strong winds, frost damage and circumcision may cause abnormal leaf loss of citrus.

Prevention and control measures

1. Strengthen the tree.

In terms of production, it is necessary to combine deep ploughing and application of phosphorus and potassium fertilizer and organic fertilizer to make the root system deeply rooted, and at the same time spray Bika amino acid foliar fertilizer, reasonable pruning, timely drainage and irrigation, so as to cultivate a strong tree potential and improve the antibodies of the tree. For plants that have pesticide damage, foliar fertilizer and brassinin can be sprayed on the crown branches and leaves to alleviate it, and for the defoliation caused by improper circumcision, foliar fertilizer should be sprayed in time or electric tape should be used to bond the annular incision, and at the same time, within one month after circumferential cutting, avoid spraying pesticides such as stone sulfur mixture that are easy to cause defoliation.

2. Do a good job in pest control.

Before wintering, it is necessary to do a comprehensive clearing of the garden, reduce the base of pests and diseases, and add 2,4-d to the garden, which is conducive to frost prevention and leaf preservation. What medicine works well for abnormal deciduous citrus in winter? For a large number of fallen leaves caused by anthracnose and macular disease, once found, it is necessary to prevent and control them in time, reduce the damage, and spray microbial fertilizers in time during the growing season to protect the leaves.

3. Pay attention to anti-freezing.

In addition to doing a good job of planting in the right place, applying sufficient base fertilizer, whitening the trunk and other measures, it is also necessary to pay attention to the need to spray citrus winter defoliation only before freezing after fruit picking; Second, emergency freezing measures should be taken, and microbial fertilizer and potassium dihydrogen phosphate solution need to be sprayed in time before frost to slow down the thawing of the tree and restore the function of leaves.

4. Supplement nutrients.

In production, we should pay attention to the deficiency of nutrients, and prevent and treat it in time once it is found, so as to prescribe the right medicine and apply what fertilizer is lacking.

Hello, the yellowing of the leaves of the orange tree can: 1. Replenish water: When the weather is hot and hot, water the orange tree in the morning and evening with the reeds to keep the soil moist.

2. Adjust fertilizer: change nitrogen fertilizer, boron fertilizer and fertilizer rich in iron, manganese and zinc for orange trees. 3. Spraying agents and concealing agents:

Spray imidacloprid or dimethoate oxide on the yellow leaf area to eliminate pests. 4. Loosening the soil: Loosen the soil with a hoe and mix it with river sand.

The leaves of citrus are only yellow, if it is caused by the lack of a certain nutrient element, you can fertilize reasonably, and supplement a certain nutrient according to the situation. If it is caused by excessive fertilization, it should be avoided to apply thick fertilizer or raw fertilizer, and excessive fertilization or excessive fertilization should be watered in time to promote dilution. If it is caused by infection with pests and diseases, it is necessary to take measures in time**.

If the temperature in the environment is low, you need to take warm measures, cover with straw or water antifreeze water.

There are three possibilities for the yellowing of citrus leaves.

First, the disease should be sprayed symptomatically.

Second, fertilizer and water are insufficient, and fertilizer water should be supplemented.

The third is frost damage, and when the temperature rises to more than 10 degrees, spray brassin.

The main method of citrus cultivation

1. Choose to plant a sapling.

In general, citrus seedlings in the transponder are more likely to survive than those with bare roots. If you want to buy citrus seedlings with bare roots, you should choose healthy citrus seedlings with more developed roots and less mechanical damage, so that the cultivated seedlings are easier to survive.

2. Apply base fertilizer.

Before planting citrus seedlings, high-quality bio-organic fertilizer should be added to the planting pit. Because this fertilizer can improve soil quality, increase the organic matter of the soil, and also reduce the spread of diseases.

3. Preparation before planting and ascending wisdom.

Before planting, the citrus tree is dipped in roots with some medicine. In addition, it is necessary to cut off new shoots that are not ripe. Doing so can restore the damage to the roots and improve the survival rate of the sapling.

4. Planting of citrus trees.

After all the preparations are done, it is time to start planting. The citrus seedlings are first placed in the pit, the roots of the citrus seedlings are stretched, and then the soil is filled. After filling the soil, it is enough to pour some water.

5. Post-planting management.

In general, citrus should be planted in the spring and fall. About 80,120 trees are planted on one acre, and the specific number depends on the actual situation. After planting, the roots should be restored as soon as possible, and the growth of new shoots and shoots should be promoted, and most importantly, the canopy should be expanded as soon as possible.

6. Management of water and fertilizer.

The role of fertilizer is to provide nutrients to fruit trees and also improve the soil quality. In the process of fertilization, the amount of organic fertilizer should be increased, and then the inorganic fertilizer and formula fertilizer should be reasonably matched. The fertilization method is mainly based on soil fertilization, and then fertilized together with foliar fertilization, strip furrow fertilization and other methods.

For young trees, nitrogen fertilizer is the main fertilizer, and phosphate fertilizer and potassium fertilizer are auxiliary fertilizers. After the citrus trees have blossomed and borne fruit, they are applied together with germination fertilizer, fruit preservation fertilizer, strong fruit fertilizer and harvesting fertilizer.

The best way to remedy yellowing of citrus leaves is to cut off the leaves.

The yellowing of the leaves of the orange tree is usually caused by the hot weather, a large loss of water and drought of the plant, and it is necessary to water the roots and the soil around the roots. In the morning and evening, water treatment is carried out to ensure that the soil is moist, but it does not leave stagnant water.

The adjustment of fertilizer is also a more important work, generally lack of nitrogen fertilizer or boron fertilizer, as well as iron, manganese, zinc, etc., will make the leaves of orange trees abnormal yellowing. It is necessary to add these elements to the fertilizer of the plant, so that the thin fertilizer is applied frequently, and a small amount is supplemented many times.

The rest

Sometimes the yellowing of the leaves of the plant is due to the infection of pests, such as red spiders, which will cause the leaves of the orange tree to turn yellow, so it is necessary to cut off the branches and leaves of the affected insects in time and spray them with diluted insecticides. Completely kill the pests and eggs hidden on the plant to curb the spread of the phenomenon of yellow leaves.

Orange trees are suitable for growing and developing in acidic soils, and the soil needs to have a loose and porous structure and good drainage and ventilation. If the soil is compacted and salinized for a long time, the plant will have yellow leaves, and it needs to be turned in time to make it soft, or it can be replaced directly with soil suitable for its growth.

Citrus tree leaf yellowing remedy 1, cut off the yellow leaves of the citrus tree leaves yellowing how to remedy the yellowing of the leaves of the citrus tree, it may be because of its metabolism and the natural yellow leaf phenomenon, this is a completely normal physiological phenomenon, no need to do anything extra superfluous, only need to use scissors to cut off those stupid and annihilated in the old leaves and yellow leaves together, and soon rebirth of new leaves. 2. Replace the soil Citrus tree is a plant that likes to live in a more loose porous and overall acidic soil, once the soil appears more serious compaction, rigidity or salinization, it will make the citrus tree lose its leaves, so it is necessary to replace the soil in time, and replace it with loose and fertile and acidic new soil for the growth and development of citrus trees. 3. Spraying pesticidesWhen the orange trees of the citrus shed tribe are infected with root rot or infected with red spiders, aphids and other pests and diseases, and the yellow leaves and leaves fall or even the whole plant withers, it is necessary to take them out of the potting soil in time, cut off the tissue part of the infected insects and spray the disinfectant and insecticidal agents, so as to curb and stop the spread of pests and diseases.

4. There are many reasons for proper shading of the yellow leaves of citrus trees, one of which is caused by the burning of the leaves of the plant due to excessive light, and it is necessary to carry out shading operations in time, especially in midsummer, when the sun is too high, it is necessary to take part of the sunlight in time to ensure that the growth and development of citrus trees are not affected by strong light.

The yellowing of small leaves of citrus and the tendency to fall off are caused by different reasons. First, the lack of water and nutrients in citrus plants, or the attack of plants by viruses, pests, or poor resistance, can cause the leaves to turn yellow, wilt, and fall off. Second, the pale color of citrus leaves is caused by malnutrition, the lack of nutrients in the leaves, check the water and fertilizer situation of the plant, and use appropriate chemical fertilizers to supplement the nutrients of the plant, so as to improve the growth of the plant and the state of the leaves.

In addition, the location of the plants should be just right, not direct sunlight, to maintain the proper temperature and humidity of the plants, to ensure that the soil is kept moist enough, so that there are better growing conditions, and the yellowing and falling of the leaves of the imitation panicle will be reduced a lot.

Summary. Orange leaves are caused by many reasons, such as root problems such as nutrient deficiencies, pests and diseases, improper circumcision, excessive use of hormones, etc.

Watering causes root rot and yellowing of leaves. One is that the soil has too much water, which causes root rot, and the other is nutrient imbalance, which causes the root system to absorb nutrients impaired. It can be caused by soil problems, poor water and fertilizer management, or pests and diseases.

There is too much water in the soil, and the roots are deprived of oxygen. It will also turn yellow and dry up due to pesticide damage or pests and diseases.

What's going on with the yellowing and withering leaves of the citrus tree.

Are you there. Orange leaves are caused by many reasons, such as root problems such as shouting fronts: nutrient deficiencies, pests and diseases, improper circumcision, excessive use of hormones, etc.

Watering potatoes are often caused by root rot and yellowing of leaves. One is that the soil has too much water, which causes root rot, and the other is nutrient imbalance, which causes the root system to absorb nutrients impaired. It can be caused by soil problems, poor water and fertilizer management, or pests and diseases.

There is too much water in the soil, and the roots are deprived of oxygen. It will also turn yellow and dry up under the influence of pesticide damage or several pests and diseases.

1.Citrus Tree Leaf Yellowing Remedy Citrus Tree Leaf Yellowing may be due to its metabolism and the natural yellow leaf phenomenon, which is a completely normal physiological phenomenon, no additional operations are required, just use scissors to cut off those too old leaves and yellow leaves together, and the skin will soon be reborn into new leaves. 2. Replace the soil Citrus tree is a plant that likes to live in a more loose porous and overall acidic soil, once the soil appears more serious compaction, rigidity or salinization, it will make the citrus tree lose its leaves, so it is necessary to replace the soil in time, and replace it with loose and fertile and acidic new soil for the growth and development of citrus trees.

3. Spraying pesticidesWhen citrus trees are infected with root rot or infected with red spiders, aphids and other diseases or insect pests, and yellow leaves and leaves fall or even the whole plant withers, Rannian Prefecture needs to take it out of the potting soil in time, cut off the tissue part of the infected insects and spray disinfecting and insecticidal agents, so as to curb and stop the spread of pests and diseases.