What causes the leaves of citrus trees to roll up after fertilization?

The main reason for the leaf curl after fertilization is due to the effect and damage of fertilizer on the root system of citrus trees, followed by improper fertilization. When fertilizing, the soil moisture is poor, and there is not enough soil mixing, or there is no watering, which causes the fertilizer to burn part of the root system, resulting in the disorder of water and fertilizer absorption function and the phenomenon of leaf rolling or yellow leaf fall.

We know that there are three ways to fertilize citrus: large fertilizer, top dressing and extra-root spraying, and the leaves become rolled after fertilization, and the big reason is that the fertilizer is improper, and the fertilizer damage occurs, which causes the leaves to roll up. Digging pits and burying large fertilizers, applying inferior compound fertilizers, organic fertilizers that are not fermented and rotted, and not evenly mixing soil during application may cause fertilizer damage; When topdressing, improper fertilization position, too close to tree roots, excessive fertilizer concentration, and application of fake and shoddy fertilizers will also cause fertilizer damage; Foliar sprays, poor quality fertilizers, and excessive spray concentrations can also cause fertilizer damage.

Fertilizer burns the roots. Because the leaves will turn green instead of yellow after normal fertilization. At this time, you should pay attention to other things, you can water a little more.

Digging pits and burying large fertilizers, improper operation, too close to the trunk, this situation is more common in autumn and winter. The standard way is to dig a pit when digging a pit, generally to dig a pit outside the canopy of citrus trees 10 cm, a little fibrous roots can be fine, too close to the root system, it is easy to cause a large number of fibrous roots to be dug up, thereby causing poor absorption of water and nutrients, which is easy to cause the leaves to become rolled.

Digging pits and burying fertilizer without timely soil cover will also cause the leaves to roll up. Especially when the weather is dry and the temperature is high, the water consumed by the growth of citrus itself is not replenished in time, which causes the physiological reaction of citrus trees.

This is due to excessive fertilization, the nutrients are too abundant, causing the leaves to roll up, and it is recommended to replace the soil or water it more to wash away the excess nutrients.

The inner surface of organic fertilizer or urea and compound fertilizer contains uruate or biuret and other components, which have a harmful effect on all plants and their roots, and must be converted into ammonia nitrogen by soil microorganisms in order to be absorbed by the roots normally.

After fertilization, pay attention to watering in time. This problem occurs when the fertility is too large to be watered in time.

A large number of high concentrations of ammonia nitrogen and nitrate nitrogen also have a very great harm to plants, only the appropriate concentration of ammonia nitrogen and nitrate nitrogen can not have a harmful effect on the root system.

It may also be because you have poured too little water, which will lead to this situation.

Citrus trees fall off their leaves in spring because of the loss of fertilizer, citrus leaves yellow, dry, will cause the phenomenon of falling off, in the process of citrus fertilization, we must pay attention not to fertilizer, timely supplement of water-soluble fertilizer, in order to make citrus trees grow better.

Apply fast-acting water fertilizer 15 days before spring shoot germination to promote the good growth of spring shoots, and the fertilizer can also be applied twice before and after shoots. Before and after the summer heat, that is, about 15 days before the budding of autumn shoots, water-soluble fertilizer was applied once to promote the growth of autumn shoots and healthy oysters. Around October, the fruit enters the peak period of enlargement, and the tree body begins to enter the physiological differentiation period of flower buds, and a high-quality fertilizer is applied to facilitate the differentiation of strong fruits and flower buds.

In addition to the above several fertilizations, in the full flowering period or flowering period to see the age, tree potential, flowering amount and leaf color, etc., appropriate application of flowering fertilizer.

For example, trees with light leaf color and many flowers can be applied with high-nitrogen water-soluble fertilizer once; The tree is vigorous, the leaf color is dark green, or the flowers are few, so as not to overgrow the summer shoots and cause fruit drop. 5 June is the stage of young fruit development, such as more fruits, light leaf color, buds are not full, can be applied a banquet water-soluble fertilizer. For citrus planted in high dry land or with older trees, summer shoots are the fruiting mother branches of the following year, and a water-soluble fertilizer should be applied to promote the growth of summer shoots.

External causes mainly refer to the phenomenon of leaf loss caused by some abnormal environmental conditions, such as sudden strong winds, coupled with the lack of good shelterbelts around the orchard, which can easily lead to the loss of large areas of citrus leaves.

Internal causes include: insufficient nutrient supply, excessive use of fertilizers, pests and diseases, etc.

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Fruit tree yellow leaf cause.

1. Excessive fertilization: fruit trees like fertilizer, but not tolerant of thick fertilizer, when breeding fruit trees, if the fertilization is too frequent or the fertilizer concentration is too high, it will lead to fertilizer damage to the plant, which will make the leaves of the fruit tree yellow and fall.

2. Too little watering: fruit trees need sufficient water in the growth process, when breeding fruit trees, if the watering is too little, then the plant is easy to grow poorly, so that the leaves of the fruit tree lack of water and dry and yellow, 3, too strong light: in the middle of summer when the fruit tree is maintained, if the light is too strong, it will cause the plant to be sunburned, so that the leaves of the fruit tree are scorched and yellow.

Treatment method for yellowing of fruit tree leaves.

1. In view of the yellowing of fruit tree leaves caused by excessive fertilization, it is necessary to stop fertilization immediately, and clean the soil with a large amount of water to reduce the fertilizer content in the soil and make the fruit trees grow healthily.

2. In view of the yellowing of the leaves of fruit trees caused by too little watering, it is necessary to water every three days to keep the soil moist, and it is also necessary to spray water regularly on the leaves of fruit trees to make their leaves more shiny.

3. In view of the yellowing of the leaves of fruit trees caused by too strong light, it is necessary to do a good job of shading measures for fruit trees, which can be covered on the plants with shade nets, and also need to use sterilized scissors to cut off the yellowing and dry leaves of fruit trees to avoid the loss of excess nutrients.

Yellow leaf control of fruit trees.

When maintaining fruit trees, you can apply nitrogen, phosphorus and potassium compound fertilizer every half a month or once a month to make it flower and bear fruit quickly, and you also need to regularly spray fungicides to fruit trees to prevent and control pests and diseases, so that fruit trees grow healthily, and you also need to spray potassium dihydrogen phosphate on the leaves of fruit trees to restore the green leaves of fruit trees.

There is a problem with fertilizer. The purchased commercial organic fertilizer raw materials are inferior, such as chemical plant waste, urban sludge, various scraps from sugar factories and paper mills, weathered coal, etc., which not only have low nutrient content, but also may have the risk of heavy metals and harmful bacteria exceeding the standard, which may cause dead trees.

Homemade organic fertilizer is not completely decomposed, and it continues to react in the soil to exothermic roots, which can cause dead trees.

Second, it hurts the root when using.

Organic fertilizer is generally under the ditch, if the ditch position is too close to the trunk, fear of digging up the thick roots, and this kind of roots are not as fast as the absorption roots, it takes a long time to recover, and the fruit tree may die due to the rapid decline of the tree.

In addition to directly digging up the thick roots, the roots are not covered in time after ditching, so that the root system is exposed for a long time, which is also not good for the tree.

Many farmers want to quickly rot the farmhouse fertilizer, so it is recommended to use the Living Soil King Fermentation King to rot, and it will be rotten in half a month.

After the fruit tree uses fertilizer, the leaves will turn yellow, roll the leaves, and lose the leaves, then you have used too much fertilizer for the fruit tree! Hurry up, flush her desperately! Where do you fertilize?

It's better to dig out that fertilizer. If you can't dig it out, it's already dissolved, and the fertilizer has to be washed with water quickly! Or soak the whole orchard in water and let the water go.

In this case, you should use too much fertilizer, and in this case, you should teach the water to rinse the fertility, so that you can do it.

There are several reasons for leaf curling in citrus trees, such as root nematode infestation, lack of elements and unsuitable growing environment. If it is caused by root nematode infestation, it is necessary to do a good job in root nematode control, and once found, timely irrigation for prevention and control; If there is a lack of elements, it is necessary to supplement the elements needed for the growth of citrus trees in time, and organic fertilizer or multiple compound fertilizer can be applied; If it is caused by an unsuitable growing environment, it is necessary to transplant the plant into an environment suitable for its growth.

Citrus tree leaf curling causes.

Root nematode infestation: If the citrus tree is attacked by root nematodes, it will cause the root system to grow small nodules, causing the root system to not absorb nutrients and water normally, which will cause the leaves to curl due to lack of nutrient water.

Lack of elements: If citrus trees are deficient in trace elements such as boron and calcium, then there is a risk that their leaves will curl.

The growing environment is not suitable: Citrus trees can cause leaf curling if they are grown in drought, low temperatures, high temperatures, and acidic soils.

Citrus tree leaf curling treatment.

Remove root nematodes: If the citrus tree is infested by root nematodes, it is necessary to do a good job in root nematode control, once the root nematode is found, it is necessary to irrigate in time to prevent and control.

Increase fertilization: If the plant is curled because of the lack of elements, it is necessary to replenish the elements needed for the growth of citrus trees in time, and you can apply organic fertilizer or multi-compound fertilizer to increase the content of trace elements in the soil.

Choose the right environment for planting: If the leaves of a citrus tree are curled due to an unsuitable growing environment, the plant needs to be transplanted and moved to a soil environment suitable for its growth.

Citrus trees prevent leaf curling.

Control pests and diseases: The temperature gradually rises in spring, insects and germs also begin to be active, we must take preventive measures, you can spray Liangguoan + garlic oil + Mujian matrine, effectively prevent red spiders, thrips, scale insects potato resistance, canker, anthracnose and other pests and diseases.

Balanced supplementation of medium and trace elements: When fertilizing citrus trees, it is necessary to apply fertilizers containing different elements in a balanced manner, and must not apply a large amount or a small amount of fertilizer of a certain element.

The yellowing of the leaves of citrus trees after fertilization may be due to over-fertilization, root burns or lack of oxygen in the roots, or it may be a lack of certain nutrients, such as iron, zinc, magnesium, etc. **Here's how:1

Stop fertilizing in time and give plenty of water to help the roots recover. 2.If there is a lack of nutrients, it needs to be replenished in time, either by using fertilizers containing essential nutrients or by adding corresponding nutrients to the soil.

3.If the disease is severe, foliar sprays can be considered to help the leaves absorb nutrients and promote the recovery of leaves. 4.

If needed, a professional horticulturist can be called in for inspection and treatment to ensure healthy growth of the tree.

Hello dear, according to your description, the yellowing of the leaves of the citrus tree after fertilization may be caused by excessive or improper use of fertilizer, at this time, the following measures can be taken: Wash the roots: Rinse the roots of the citrus tree with clean water to remove residual fertilizer and salt.

Increase the frequency of watering: Increasing the frequency of watering can help dilute the fertilizer and salt in the soil and slow down damage to citrus trees. Prune branches and leaves:

Pruning off damaged, aging leaves and branches is beneficial for the metabolism and nutrient absorption of citrus trees. Adjust the amount and method of fertilization: control the amount of fertilizer each time, choose the type and method of fertilizer by Hemin Flushing, and follow the principles of "less but many times" and "staggered fertilization" to reduce the pressure on citrus trees.

Supplement citrus trees with trace elements: citrus trees lack trace elements will also cause yellowing of leaves, and special fertilizers containing trace elements can be supplemented. If the above methods still do not solve the problem, it is recommended to ask a professional gardener to check and **.

Citrus trees, what is this disease? The leaves are scorched when they are a little about to age, and according to the information you provide, the leaves of citrus trees appear to be scorched during aging, which may be caused by the following reasons:1

Natural aging: As citrus trees grow, the leaves gradually age as they age. In this case, it is a normal natural phenomenon for the leaves to be scorched.

2.Lack of water: Citrus trees need sufficient water to maintain normal growth and metabolism during the growth period.

If the soil is dehydrated or irrigated, the leaves will scorch. 3.Pests and diseases:

Citrus trees can also be attacked by certain pests and diseases, such as citrus huanglongbing, citrus black spot, etc. These pests and diseases can cause the leaves to wilt, turn yellow, or appear spotted, eventually causing the leaves to scorch. 4.

Nutritional imperativeness: Citrus trees need enough nutrients to sustain life activities during the growth process. If the soil lacks certain nutrients, such as nitrogen, phosphorus, potassium, etc., it will cause the leaves to appear scorched.

In order to be sure, it is recommended that you carefully observe the condition of the leaves to see if there are any traces of pests and diseases; Factors such as soil moisture and nutrient availability are also taken into account. If needed, consult with a local plant pest control expert.

In early spring, citrus is prone to cold damage, especially in early spring, the branch tissue is tender and susceptible to frost damage, resulting in reduced physiological activity, weak tree strength, insufficient nutrition, and leaf rolling. The roots of some old, weak, diseased and damaged trees have weak absorption capacity, and the nutrients absorbed from the soil cannot meet the nutrients required for nutrient consumption and spring shoots, flower bud differentiation and root growth in winter, resulting in the normal growth of new leaves in the aboveground part and curling of leaves.

Because aphids are a type of pest that feeds primarily on citrus leaves, they can cause damage to citrus leaves, causing them to curl. Underground nematodes also harm citrus roots, preventing them from absorbing enough nutrients and water to support normal growth, which are responsible for curling citrus leaves. A bad citrus root system can also lead to leaf rolling; Improper fertilization can lead to root burns and injuries; Moisture in the soil leads to degumming roots; Root-knot nematodes damage roots; Small trees, especially new trees, will have curly leaves if the new roots do not grow well.

<> hanging fruit trees are not buried in winter fertilizer, the tree body is weak, and the leaves in the whole garden are serious, and some of them turn yellow; When digging the root system, the root system grows well and the soil is not dry. Orchards may fail to replenish nutrients in time to restore the strength of the trees after picking fruits, resulting in nutrient deficiencies, resulting in leaf rolling. It is recommended to use water-soluble fertilizers, which should be watered every 15 days or so, and the foliar surface should be supplemented with trace element fertilizers such as boron and zinc.

To strengthen nutrient management and restore the strength of the tree, it is necessary to replenish the leaves and roots at the same time.

Before the germination of new shoots, strong root fertilizer was applied, and the roots were soaked with humic acid and alginic acid to add nutrients to the roots and improve the structure of soil aggregates. It is necessary to nourish roots, promote roots, and strengthen roots, with a good root system, strong absorption capacity, a naturally strong tree body, good leaves, fast greening of leaves, photosynthetic production of nutrients, and reversal of tree potential. Replenish nutrients from the root system before new shoots appear.

Improve the structure of soil aggregates, provide good microecological soil environmental conditions for roots, improve root receptivity, promote rooting, and enhance tree dynamics.