Citrus leaves appear yellow in the summer and will lose their leaves, what should I do?

In the process of growing citrus, there are always a lot of different problems that arise. Among them, the yellowing of leaves is one of the more common, so how to deal with such a situation is also a matter of great concern to fruit farmers. There are many reasons that cause the leaves to turn yellow.

Now let's take a look at what causes the leaves to turn yellow and how to deal with them.

If there is a long-term lack of water, it is easy to wilt the whole plant, starting with the leaves, which seriously leads to the death of the citrus tree. If the yellow leaves are caused by a lack of water, first pour plenty of water into the ground, and then water the branches and leaves every day, at least twice in the morning and evening, to keep the leaves moist. Gradually increase the amount of watering in the later stage.

To avoid water shortage, the soil should be kept moist at all times, but drained well to avoid water accumulation.

2.Undernutrition.

In the process of citrus cultivation, adequate nutrition is essential in order to have good growth and yield. Especially during the growth period, the need for nutrients is slightly greater. If there is a long-term lack of nutrients, it will naturally affect the growth, and the leaves will slowly fade.

In this case, do not supplement too much nutrition at one time, and increase the frequency of fertilization appropriately. At the same time, supplementing some trace elements and using more compound fertilizers can make nutrition more comprehensive. By increasing the frequency of fertilization several times, the leaves will slowly recover.

3.The intensity of the sunlight is too great.

The climate is very hot in summer, and high temperatures can also affect citrus. In general, citrus is best grown in an environment of 20 to 30 degrees, and it has a great impact on citrus when it exceeds 35 degrees. Although citrus prefers plenty of light, too much sunlight can easily turn the leaves yellow.

Therefore, in summer, it is necessary to shade the citrus trees according to the actual situation, or reduce the temperature of the surrounding environment, which can also effectively prevent the leaves from turning yellow. In hot weather, it is important not only to pay attention to this, but also to ensure adequate moisture. If it is too dry and exposed to sunlight, it may cause the leaves to turn yellow.

4.Pest.

Pests and diseases are also the main cause of yellowing of leaves. Generally, spring and autumn are the seasons with high incidence of pests and diseases. Spider mite disease is the direct cause of yellow leaves.

If the yellow leaves are caused by pests and diseases, all the yellow leaves should be cut off and then some insecticides should be used for pest control. If the citrus pest is severe, it is recommended to dig it up directly to avoid the spread of pests and diseases.

A number of measures should be taken. The first is to strengthen soil management, improve drainage and irrigation measures, carefully cut down orange orchards before the rainy season, and remove stagnant water in time to avoid excessive water accumulation after rain. The season leads to a lack of roots, and oxygen causes yellow leaves, leaves, and fruits to fall.

Proper fertilization should be based on the growth state of the citrus tree. In addition to the commonly used nitrogen, phosphorus and potassium fertilizers, it is also necessary to balance the use of fertilizers and add trace elements. Organic fertilizers can also be used.

I think citrus should be fertilized so that they can grow healthily.

It is necessary to fertilize citrus in time, and when applying fertilizer, use more acidic fertilizers such as organic fertilizer and green manure, which is very beneficial to improving the soil environment. It is necessary to use some microbial agents for citrus, which can improve the organic matter in the soil and make the roots grow stronger.

During the drought, the leaves of the fruit trees should be inspected every day, and the old leaves should be replenished with water and top dressing in time when there are micro rolls, and the drainage ditch needs to be dug deep for waterlogging, and the fertilizer is easy to take away when the rain is heavy, and the top dressing needs to be carried out in time after drainage.

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 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. It mainly refers to the phenomenon of defoliation caused by some abnormal environmental conditions, such as the sudden attack of strong winds, coupled with the lack of good shelterbelts around the orchard, which can easily lead to the large-scale shedding of citrus leaves; The temperature plummets, frost damage occurs, and the leaves will also fall off abnormally; The orchard is surrounded by insufficient light for a long time, and some leaves are in no light or low light environment for a long time, because the nutrients of these leaves cannot be supplied, yellowing phenomenon occurs, which will also lead to the occurrence of abnormal defoliation.

It mainly refers to the phenomenon of leaf fall caused by some abnormal banquet environmental conditions, such as the sudden attack of strong winds, coupled with the lack of good shelterbelts around the orchard, which can easily lead to the large area of citrus leaves falling off; The temperature plummets, frost damage occurs, and the leaves will also fall off abnormally; The long-term lack of light around the orchard, and some leaves have been in no light or low light environment for a long time, due to the inability to supply the nutrients of these banquet leaves, yellowing phenomenon will also lead to the occurrence of abnormal defoliation.

From this point of view, it is a lack of potassium fertilizer.

Excessive application of high potassium fertilizer.

Yes, it's better to add a little farmyard manure.

I don't mean potassium deficiency, potash fertilizer has been applied.

Well, I don't think it's a big problem.

You may have heard of apple wheel spot disease, strawberry wheel spot disease, and tea tree wheel spot disease, but how much do you know about citrus wheel spot disease? As a new low-temperature fungal disease on citrus, wheel spot disease was first reported in Chenggu, Shaanxi Province in 2006, and was initially treated as anthracnose, brown spot, resin disease or periodic frost damage, but Duyan Ziliang did not receive good results, and the first outbreak brought devastating damage to the local Wenzhou mandarin orange and kumquat.

Citrus wheel spot disease occurs to a certain extent after it is extremely difficult and cannot be done, and it is recommended to prevent it, and specific measures such as: strengthening cultivation management and cultivating strong trees; Pay attention to orchard cleaning and reduce the number of disease sources; Scientific pruning, reasonable thinning; In mid to late November, the canopy was sprayed with protective fungicides such as mancozeb 1 or 2 times to reduce infection; In the early stage of diseased trees, you can try to use pyraclostrobin + pyridoxamide, pyrimycomine and other agents**, and it is recommended to be sprayed together with phosphorus and potassium source reservoirs to help improve disease resistance.

Summary. Reduce watering: Orange trees are afraid of waterlogging, and too much watering can easily lead to leaf loss.

Watering should be reduced and ventilation should be strengthened. Reasonable top dressing: lack of fertilizer or the application of thick fertilizer will lead to leaf fall, lack of fertilizer as soon as possible to make up fertilizer, fertilizer damage as soon as possible to rinse with water.

Spraying treatment: If it is a leaf fall caused by pests and diseases, spray the corresponding drug treatment as soon as possible. Reasonable temperature control:

If the temperature is low, frostbite, the temperature should be controlled as soon as possible.

Reduce watering: Orange trees are afraid of waterlogging, and too much watering can easily lead to leaf loss. Watering should be reduced and ventilation should be strengthened.

Reasonable pursuit of big fertilizer: lack of fertilizer or the application of thick fertilizer will lead to the fall of the front leaves, Jingqing lack of fertilizer as soon as possible to supplement fertilizer, fertilizer damage as soon as possible to rinse with water. Spraying treatment:

If it is a leaf loss caused by pests and diseases, it is necessary to spray the corresponding drugs as soon as possible. Reasonable temperature control: If the temperature is low and frostbite, the temperature should be controlled as soon as possible.

What kind of pest and disease?

Citrus trees are mainly due to huanglongbing, anthracnose, lipid spot yellow spot, nematode disease and other reasons.

The insects that cause citrus defoliation are mainly red spiders, rust ticks, and scale insects.

What's going on?

Leaf dropping. Dear, do you have any questions?

It should be caused by some bugs, or a lack of water.

Yellowing is a general name for the phenomenon of leaf loss and yellowing in the process of citrus growth and development, and its production means the gradual decline of plant type. After the beginning of autumn, the phenomenon of citrus autumn yellow will follow, because the photosynthesis efficiency of yellowing trees will decrease sharply, which will lead to weak autumn shoots and difficult to expand citrus fruits, and will also harm the production of flowers and fresh fruitsIf it can't be corrected immediately, it will be very complicated. This time, let's talk about the common factors that cause citrus autumn yellow and the corresponding improvement countermeasures, in order to give some help to orange friends.

Nutritional deficiency is the root cause of the nutrient consumption of citrus spring shoots to veraison most of the links come from the nutrient accumulation of last year's tree stems, after entering the autumn shoot puffing link, the previous inventory commodities have long disappeared, and this period of tapping, puffing fruit, long roots will produce greater nutrient consumption, so it is not filled as soon as possible, <>

From the past work experience, it seems that the proportion of nutrient imbalance in various citrus is actually higher. For example, after the fruit is gradually expanded, "V" yellow dots appear on the leaves around the fruit, that is, the magnesium deficiency is more serious; After the autumn shoots spread their leaves, the yellowing of the new shoots is caused by calcium deficiency; If the new shoots gradually turn yellow from the leaf and expand to the leaf edge, the probability of calcium deficiency is high. Although many farmers chased the autumn shoot puffing fruit fertilizer, but because only the balanced fertilizer or high potassium fertilizer was supplemented, ignoring the filling of medium and trace element fertilizers, this measure aggravated the lack of calcium, magnesium and other elements, so in the fertilization, the effective application of nutrients is very important, at the same time, it should also be integrated with leaf topdressing, zinc source bank, etc., to improve fertility.

Once damaged, the versatility will be blocked, and the lack of nutrients will lead to secondary damage to the root system, and finally fall into a vicious circle, this kind of tree is more difficult to get than pure nutrient deficiency, and the field is more accompanied by the yellowing of petioles or the coexistence of a variety of nutrient deficiency syndromes. There are many factors that lead to citrus root damage, rain and waterlogging roots, drought and dry roots, fertilizer and burning roots, unreasonable ring cutting of hungry roots, pests and roots are all possible, in the correction, we must first identify the cause, reduce the coercion, and then repair the roots and raise the roots, from the source to solve the difficulties.

Yellowing is a general name for the phenomenon of leaf loss and yellowing in the process of citrus growth and development, and its production means the gradual decline of plant type. Yellowing is a kind of integration of green plants into the natural environment. When seeds or other persistent human organs germinate under a dull soil layer, the limited amount of organic chemical trophic chemicals can be used most effectively for the extension of the hypocotyl or stemBao Xiaomiao unearthed cultural relics to see the light.

The common way to block light is to produce and manufacture yellowed seedlings as food, such as leeks, garlic and bean sprouts, etc., which are tender and refreshing because of the lack of fiber.

This is actually the yellowing phenomenon of citrus, and the root cause is caused by insufficient nutrition.

In the process of citrus growth, a large amount of nutrients are sucked away from the tree, and all the nutrients are basically supplied to the citrus, and the tree will gradually show signs of weakness, so the leaves will gradually turn yellow.

The phenomenon of green and yellow leaves is usually due to insufficient nutrient intake or insect infestation, and these two causes can be investigated.

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.