Why do jujube tree leaves turn yellow?

Because the jujube tree is waterlogged, it is easy to cause the young tree to rot roots and yellowing leaves.

Tips: Do a good job of drainage and flood prevention.

In the first month of flowering and the young fruit stage, the soil layer is kept dry, which is conducive to flower bud differentiation and fruit set. During flowering and finger-sized fruit, the soil needs to be moistened to increase fruit size and juice content. At this time, if the soil is dry and sunny.

, the young fruit appears to temporarily lose water during the day and shrink. If the drought continues, the fruit will lose too much water and will be difficult to recover, which will eventually lead to a large number of fruit drops. Drought in the later stages of fruit development can cause the fruit to ripen early, become small and fleshy, and lose its commodity value.

Therefore, South China.

In the dry and cold season of autumn and winter, it is the period when the fruit of jujube hairy leaves develops and expands, and the branches continue to grow, so sufficient water is needed. If there is a drought at this time, it should be irrigated frequently, once every 7 15 days. In orchards without irrigation, inter-plant strip mulching should be applied before drought occurs to reduce soil moisture evaporation and increase soil temperature.

The irrigation method of dry and wet, that is, waiting until the soil is dry before irrigating, or not removing excess water in time after irrigation, can easily cause a large number of fruit drops and cracks, resulting in a decline in fruit quality. Different varieties reacted differently to soil dryness and wetness, among which Thai dates were the most sensitive, followed by Yulong varieties. Therefore, except for keeping the soil dry for 1 month before flowering and the young fruit stage, and not suitable for irrigation, the orchard should keep the soil moist during the rest of the period, and pay attention to drainage, waterlogging and waterlogging in rainy days.

Golden jujube prefers slightly acidic and fertile soil, and likes to bask in the sun more so that it will not turn yellow. In addition, if you are potting, don't water it too much, and you should see dry and wet.

What causes the yellowing of the leaves of the jujube tree and how should it be managed? Get advice from experts.

The leaves of the gray jujube are curly and yellowish.

Hello, please early leaves yellow, you can refer to the following reasons.

Malnutrition. or a lack of nutrients will lead to green jujubes.

The occurrence of yellow leaves, calcium deficiency will affect the development of the root system, the development of capillary roots will be hindered, and the tree will weaken and affect the expansion of fruits.

Calcium deficiency can also affect the crispness and shelf-storage capacity of the pulp, affecting quality and yield.

Magnesium deficiency leads to yellowing between the veins of old leaves of jujube, which seriously affects photosynthesis.

Zinc deficiency causes the newly pumped twigs to be thin and short, the leaves to become smaller, and the leaf color to turn yellow.

Boron deficiency affects pollination and fertilization, resulting in a significant decrease in flowering and fruit set, and the balance of calcium, magnesium and trace elements is supplemented.

It can play a role in promoting roots and strengthening trees.

When using fertilizer, it is recommended to apply fast-acting fertilizer, which can quickly replenish the nutrients needed for plant growth, such as water-soluble fertilizer and foliar fertilizer for Vosch leaves, with high nutrient utilization efficiency, fast absorption and good effect.

Jujube tree is one of the important fruit trees in China, and it is favored by people because of its delicious taste and rich nutrition. However, sometimes we find that the leaves of the jujube tree turn yellow, which may mean that it is going through some troubles.

There are many reasons why the leaves of the jujube tree turn yellow, the most common cause is lack of water. If the tree is deprived of water, the leaves will become dry and the edges will become brittle, causing the leaves to turn yellow in color. As the lack of water becomes more severe, the leaves will start to turn brown and eventually fall off.

The jujube tree needs enough water to grow and develop, so if your hair is high and the leaves of the jujube tree turn yellow, take care to water it in the right amount.

Other causes of yellowing of jujube leaves include the soil environment and pests and diseases. If the soil is too acidic or alkaline, it may interfere with the normal growth of the tree and make the leaves of the jujube tree turn yellow. In addition, pests and diseases can also affect the health of jujube trees, resulting in yellowing of leaves, affecting yields.

If the leaves of the jujube tree turn yellow more severely, please check for pests and diseases and take control measures in time.

In addition to these reasons, climatic conditions and conservation may also affect the color of the leaves of the jujube tree. Like other tree species, jujube trees need to be exposed to enough sunlight and fresh air, otherwise it may cause the leaves to turn yellow. In addition, over-fertilization and lack of nutrients can also lead to yellowing of leaves.

To sum up, if the leaves of the jujube tree turn yellow, you need to carefully check its environment, moisture, soil, maintenance, and pests and diseases, find out the problem and solve it in time to ensure the healthy growth of the jujube tree.

The leaves of the jujube tree become yellow mainly due to the following reasons, insufficient oxygen content in the soil, too much water and stagnant water, and excessive salinization of the soil, all of which will cause the leaves of the jujube tree to gradually turn yellow, and the lack of oxygen in the soil will make it difficult for the roots of the jujube tree to breathe, or the jujube tree planted in the more sticky or compacted soil will also cause insufficient oxygen, resulting in yellowing of the leaves.

The main reasons for the yellowing of the leaves of the jujube tree are the following reasons, insufficient oxygen content in the soil, excessive water and stagnant water, and excessive salinization of the soil, all of which will cause the leaves of the jujube tree to gradually turn yellow with silver and lead.

The reason why the leaves of the jujube are yellow.

1. Soil

Insufficient oxygen in the soil will make it difficult for the roots of the jujube tree to breathe, or the jujube tree planted in a more sticky or compacted soil will also cause the oxygen to be out of order, resulting in yellowing of the leaves.

2. Moisture

Jujube trees have higher requirements for water in the early stage of growth, and if there is too much water, it will cause difficulty in root breathing, resulting in yellowing of leaves, and too little water will also cause insufficient nutrition, and insufficient nutrition will also yellow leaves.

3. Salt content

If the salt content in the soil is too high, or if the jujube trees are planted in heavy saline-alkali land, the leaves will turn yellow, because the ferric iron in the soil is converted into ferric iron, and the ferric iron cannot be absorbed and utilized by the root system of the fruit tree, resulting in iron deficiency and yellowing of the leaves.

Luteophyte remedy.

The yellowing of the leaves of the jujube tree can be watered with some ferrous sulfate solution in an appropriate amount to supplement its nutrition, and it can also be properly supplemented with some nitrogen fertilizer, and it should be given sufficient light and water, which can not only improve the yellow leaf phenomenon of the jujube tree but also improve the disease resistance of the jujube tree.

The cause of yellow leaf disease of jujube tree is iron deficiency, temperature influence, irrational tillage, and root damage. Especially in saline-alkali soil, it is difficult for the iron in the soil to be absorbed by the root system, resulting in iron deficiency physiological diseases.

Prevention and control methods: 1Rational fertilization, because the partial application of phosphorus fertilizer or too much calcium in the soil can affect the absorption of iron, manganese, magnesium and other elements, advocate the application of organic fertilizer, formula fertilization, not wheel Bi can focus on the use of a certain chemical fertilizer.

2.When applying basal fertilizer in autumn, each tree is mixed with organic fertilizer with about kilograms of ferrous sulfate, which is conducive to the absorption of the root system.

3.In the onset season, spray ferrous sulfate several times, and also spray organic iron fertilizers such as yellow leaf spirit and yellow leaf green.

4.The jujube tree was transplanted with a mineral water bottle containing ferrous sulfate liquid. Each plant selects 3 4 roots with a thickness of centimeters and inserts them into the bottle. Buried under the tree, the effect is obvious.

5.20 kg of ferrous sulfate with 2. The 12-year-old yellow leaf disease jujube tree was soaked in the ring ditch and broken roots.

After 3 weeks, there was a slight regreening. 10 kg of ferrous sulfate was used to soak the broken roots of 6-year-old yellowed jujube trees. In 10 days, it will be significantly green.

If the soil is loosened before watering and a part of the surface roots are damaged, the absorption of iron and other mineral elements can be greatly improved. Younger trees are more resilient than older trees.

There are many reasons for the yellowing of the leaves of the jujube tree, the jujube tree lacks iron, and the leaves will turn yellow after suffering from yellowing. During the growth period of jujube trees, there is a lack of fertilizer, the growth of branches and leaves is poor, and the new leaves will gradually turn yellow and slag decay. During the maintenance period, if the jujube tree suffers from jujube rust and anthracnose, or is attacked by aphids, the leaves of the jujube tree will turn yellow, dry out and wilt, the oxygen content in the soil will be insufficient, there will be too much water and stagnant water, and the soil will be too salinized, which will cause the leaves of the jujube tree to gradually turn yellow. Liang repented.

Hello, the yellowing of the leaves of the jujube tree is usually due to a lack of nutrients, which causes the plant to suffer from yellowing. In view of this situation, it is necessary to replenish nutrients in time. The foliar surface can be sprayed with some amino acids and trace element fertilizers, and in addition to this, the roots can also be irrigated with fertilizer.

In the autumn of each year, it is necessary to supplement the farm manure and microbial fertilizer to provide some iron for the plants, so that the yellowing situation will gradually improve.

Causes of jujube yellow leaf disease:

1. Iron deficiency in the tree.

Because the various salts in the soil layer evaporate with the water through the ground between the capillaries. The greater the water evaporation, the more various salts accumulate in the topsoil, and the drier the soil salinization, the more aggravated the soil salinization. In the alkaline soil layer, the free ferric ions are easily oxidized to ferric ions and are fixed.

If it cannot be absorbed and utilized by the jujube root system, it is prone to iron deficiency yellow leaf disease.

The reasons for low iron levels are:

The pH in the soil is high. Effect of soil pH on iron solubility. At higher pH conditions, each additional pH unit is added.

The activity of iron in solution is reduced by 1000 times. In calcareous soils with a high pH, the soluble iron content is very low. This is the main reason why plants growing on limestone soils are susceptible to iron deficiency.

Low temperatures and drought conditions have also greatly reduced the amount of available iron in the soil.

The phosphate content in the soil is too high, and the excess phosphorus reacts with iron to form iron phosphate, which is insoluble in water. Iron ions are immobilized, reducing available iron. Jujube trees are difficult to absorb or are hindered in the body of the tree after absorption. This causes iron deficiency.

The content of heavy metal ions in the soil is too high. Copper, iron, and zinc all have antagonistic effects on iron. Among them, the antagonistic effect of copper on iron is hidden.

Nutrient imbalance causes iron imbalance. In recent years, in order to improve the quality of fruits. Jujube farmers began to pay attention to the application of phosphorus and potassium fertilizers.

But only fertilize empirically or blindly. As a result, the potassium content is greatly increased, and the ratio of available potassium to available iron is too large. Causes iron imbalance in fruit trees.

Studies have shown that abnormally high levels of copper, potassium, nitrogen, and manganese in soil can lead to a relative deficiency of iron.

2. The influence of temperature.

When the temperature is too high, the plant respiration shed finger is greater than the photosynthesis. Prolonged high temperatures can cause starvation in plants, reducing the solubility of oxygen in soil moisture. Causes anaerobic respiration in plant roots.

Toxic substances are even generated, and the absorption capacity of the root system is reduced. High temperatures inhibit the synthesis of nitrogenous compounds. Promote the degradation of proteins, which ultimately affects the synthesis of chlorophyll.

When the temperature is too low, water metabolism is out of balance. Water absorption capacity, transpiration rate, root absorption capacity, and photosynthetic rate will all decrease. Resulting in protein synthesis less than degradation.

Chloroplast decomposition accelerates. As a result, the chlorophyll content decreases.

3. Unreasonable farming.

Due to the monolithic partial application of nitrogen fertilizer. A variety of trace elements in the soil, such as zinc, copper, magnesium, manganese, etc., are out of balance, and the elements interact with each other. Causes the occurrence of yellow leaf disease; When the seedlings are planted too deeply, it is easy to cause poor soil permeability.

It causes the physiological and metabolic function of jujube trees to be disordered, and yellow leaf disease occurs.

4. Root diseases.

The soil has a large amount of salinity and heavy clay. Gravel soil is not conducive to the normal growth of jujube trees. It causes the occurrence of root rot and root-knot nematode disease.

It interferes with and destroys the function of the root system to absorb and utilize the mineral nutrients carried by each chain in the soil. This leads to physiological deficiency and yellow leaf disease.