Why are orange tree leaves rolled? What is the cause of the fallen leaves of the orange tree

Leaf curls on orange trees can be caused by improper watering, dry air, aphids or root rot. If the plant is not watered thoroughly, sprayed regularly to maintain air humidity, and is not replaced with soil and sprayed with drugs, the plant will have leaf rolling.

At this time, most of the leaves are rolled up because of a bug called Tsubaki elephant, so you can buy some pesticides and spray them.

So it was found that the leaves were curly, and it was possible that the orange tree was sick, or that there was tooth decay or something like that.

There is no moisture, it is dry and thin, and it is curly, and it is a truth with paper.

The reason why the orange tree sheds its leaves.

First, the lack of light for the orange trees cultivated indoors, this problem is more prominent, if the place of Zen protection is dark and does not see the light, it may lead to the fall of leaves, and the situation is serious will affect the fruit in the later stage. By moving the plants to a sunny place and enjoying the light, the leaf litter can be improved. Orange trees.

2. Improper waterSome people will always want to apply water to the orange tree when raising orange trees, which is an incorrect practice, which will lead to excessive accumulation of water in the potting soil, and the roots will rot, affecting the absorption function, and the leaves will naturally fall. If you leave it alone for a long time and do not pay attention to applying water, the potting soil will become arid and water-deficient, and it will be difficult to draw water from it to grow, and the leaves will fall due to lack of water. It is necessary to apply water correctly, judge the water requirement according to the growth of the plant, and determine the frequency of water application according to seasonal changes.

Orange trees. 3. The growth of orange trees with too strong fertilizer requires certain nutrients, if the fertilizer is added to the unrotted base infiltration, or the frequency of application is too high, it will cause root burning, which is also the cause of leaf fall. Pay attention to control the addition of nutrients, if it is too concentrated, add water to dilute. Manure.

Fourth, pests and diseases are in a hot and unventilated environment for a long time, and the probability of infection with pests and diseases is greatly increased, which will also cause plant defoliation.

The following conditions may result:

1. Aphid damage, mainly manifested as young leaves. Spraying acetamiprid, imidacloprid and other controls.

2. Viral diseases, etc., both new and old leaves may be manifested. Spray toxic fluorophosphine, island and other prevention and control.

3. The root system is damaged, and both new and old leaves may manifest. Loose soil is breathable and drained, and immune inducers and other root irrigation.

Summary. Orange leaves are rolled up because of pathogen infection, including viruses, bacteria, fungi and parasites, which can invade plant cells and inhibit the growth of plant bodies, thus causing the curling and deformation of plant leaves. In addition, environmental factors can also cause deformation of orange tree leaves, such as too much nitrogen and phosphorus fertilizer, the leaves will become curly camouflage, and will also cause the leaves to roll up.

In addition, the lack of oxygen or moist air in the soil will form excess water in the leaf body, which will also cause the leaf to roll up. Therefore, in order to prevent the leaves of orange trees from rolling up, fruit farmers should be scientifically fertilized, maintain soil moisture, and do a good job of preventing serious pests and diseases.

Orange leaves are rolled up because of pathogen infection, including viruses, bacteria, fungi and parasites, which can invade plant cells and inhibit the growth of plant bodies, thus causing the curling and deformation of plant leaves. In addition, environmental factors will also cause the deformation of orange leaves, such as too much nitrogen and phosphorus fertilizer, the leaves will become curled camouflage, and will also cause the leaves to roll up. In addition, the lack of oxygen or moist air in the soil will form excess water in the leaf body, which will also cause the leaf to roll up.

Therefore, in order to prevent the leaves of orange trees from rolling up, fruit farmers should scientifically fertilize, keep the soil moist and collapsing, and do a good job of preventing severe pests and diseases.

What kind of pesticide can be used to treat the curl of leaves?

Orange leaf loops are often caused by a viral infection, so it is difficult to use pesticides**, but effective precautions can be taken to avoid the disease. Here are some of the orange leaf loop measures:1

Keep the plant healthy: Orange trees need to be properly watered and fertilized to keep the plants in good health; 2.**Infected area:

When it is found that the leaves have leaf circles, the diseased leaves should be carried as soon as possible to effectively reduce the spread of the virus; 3.Avoid moisture: ensure that the cultivation environment is as dry as possible, control humidity, and prevent the spread of viruses; 4.

Disinfection of plant shells: Frequent disinfection of plant leaves, branches, and fruit surfaces can effectively inhibit the spread of viruses; 5.Adjust the plant growth environment:

Install temperature and humidity transmission sensors in the cultivation environment, adjust the plant growth environment in a timely manner, and ensure its suitable temperature and humidity conditions; 6.Scientific fertilization: correct fertilization and selection of organic pesticide fertilizers with pest and disease resistance can effectively improve the disease resistance of orange trees; 7.

Use of effective pesticides: When it is found that there are symptoms of plant leaf curvature in the orchard, pulse application can be used, and special antiviral pesticides can be used according to the condition of the split ear.

There are many reasons why orange trees shed their leaves: if it is caused by overwatering, it needs to be drained and the amount of water needs to be controlled; If it is caused by excessive fertilization, it is necessary to change the soil and reduce fertilization; If it is caused by pests and diseases, it is necessary to use corresponding pesticides for control; If the temperature is too low, it is necessary to keep warm.

1. Overwatering.

Why: Watering too much or too little can cause the orange tree to lose its leaves, and the quality of the soil and the size of the pot can also affect the water absorption by the roots.

Solution: Choose pots that are the right size for your orange tree and have well-ventilated soil. Usually watering should not be too much to avoid the formation of stagnant water.

2. Excessive fertilization.

Causes: Excessive fertilization, or the fertilizer itself is not ripe, resulting in burns to the roots, which further causes leaf loss.

Solution: Change the soil in time to avoid the fertilizer burning the roots. At the same time, the fertilizer is easy to absorb organic fertilizer, and the single fertilization should not be too much, and it can be applied twice a week.

3. Pests and diseases.

Causes: Spider mites are the main insect pest responsible for leaf loss, but anthrax can also cause leaf loss.

Solution: Different pests and diseases need to be controlled with different pesticides. Spider mites can be killed with a diluent of mite treatment, and at the same time, the overwintering larvae can be eliminated with a dilution of stone sulfur mixture. Anthrax needs to be sprayed with methyl tobuzine wettable powder mixed with water as a diluted pesticide**.

Fourth, the temperature is too low.

Reason: Mainly the low temperature out of season can cause leaf drop.

Solution: Ground plants can be built around plastic greenhouses to keep warm, and potted plants can be moved into indoor warm places.

There are many reasons for the leaves of the orange tree.

1. Overwatering.

Second, improper fertilization.

Third, there may be pests and diseases.

Either the temperature is too low.