What causes yellow spots on lemon trees leaves? Causes of yellow spots on lemon leaves

Domestic lemon diseases can deliver a lot of trouble, and sometimes to lead to the death of the plant with a late treatment of the problem.

Need to know possible diseases room lemon to prevent his death

The reasons

Lemon diseases can be caused by a number of reasons:

1. Related immunity, which is caused by improper departure.
2. Poor-quality, inappropriate soil can become a favorable soil for the appearance of pests.
3. Infection of a room plant from the street - in case you take a vomor to the street in the summer.
4. Insects that are distributors of various infections.
5. The disease already suffered by the plant can cause new ailments.

Symptoms of disease

Some of the common diseases of home lemons are the wave and shield.

The first striking the leaves of the plant or penetrates the ground. The WLL can be transmitted through other plants near Lemon. You can bring it into a house with a bouquet of wildflowers. The shield falls on lemon leaves with a larva. An adult person is already still. It is embodied to a stalk of the plant or veils on the leaves.

Often occurs among citrus such pests as cobed tick. It is able to destroy all the green leaves and bring lemon to death. Such diseases are affected by the leaves if the tree is a young, weakened or in the occurrence of special pests of lemon, striking only it.

The fight against them is long, but quite successful, if a chemical or cooked drug is correctly selected for room lemon. They can be applied in preventive purposes.

In most cases, lemon diseases are associated with a violation in recommended care. This plant requires increased attention to itself. To avoid leaf disease, it is necessary to monitor the stable temperature, sufficient illumination and rational irrigation.

Observing the balance between these three factors, you can prevent a large number of Cosmetic defects of plants that do not belong to a serious disease, but spoil appearance.

1. Yellow and fallen leaves.
2. No fruiting.
3. Rechallenge the promise.
4. Slow branches in winter.

Bacterial diseases treat much more difficult. It is recommended to entrust the trouble to specialists who will help your plant quickly cope with the disease.

Diseases not related to care

Specialists distinguish between diseases that are inherent in citrus varieties of plants. Among them you can find those that are very hard to eliminate yourself.

Direct consultation with a specialist who can visually look at the affected lemon and advise the appropriate drug, they may have burgundy liquid, phytosporin, hydrogen peroxide (containing alcohol substances are prohibited), copper vigorous as a fungicide and other drugs.

Lemon diseases:

1. Leaves unevenly, point pigmented - sheet mosaic. Not to be confused with chlorosis, in which the edges of light spots are fuzzy.
2. Brown or yellow spots, with hardened plaques inside, quickly affecting the whole plant - bacterial cancer Citrus.
3. Two types of tribes - famous pests of lemon. From the usual green, which is difficult to confuse with another insect, is distinguished by the roasting wave with white, and the habitat is in the ground.
4. The gradual dying of the tree is the first to be amazed by the leaves, they first dry, then the whole branch, and the fruits are covered with red-brown generalized stains - "Antraza".

Prevent such lemon diseases at home as trisrtene, root rot and melt can, if we provide a tree from the very beginning a stable place and scattered, bright sunlight.

If the leaves began to turn yellow, first of all you need to remember when there was a last watering, measure the temperature in the room, remove drafts (many tropical and subtropic plants They are not transferred) and contact a specialist if there is no sufficient experience in recognizing the problem.

How to treat domestic lemons diseases

Room lemon - evergreen citrus plant, which is grown in decorative purposes and to obtain exotic fruits. With ne. proper care Or infection gets the diseases of the lemons with which you can cope with timely and proper processing.

Causes of Limon diseases

Citrus sick are not as often as ficuses or blooming decorative plants. There are several reasons why lemon loses decorativeness, mines and fuses. it wrong care, lack of micro and macroelements, overvoltage, lack of light, drafts and other environmental factors.

Source: Depositphotos.

Limon diseases: Sent fungus on the leaves

Another group of reasons is infected with pathogenic microorganisms and viruses. These are bacteria, mushrooms, insects as disease carriers. With incorrect care and disadvantage nutrients The following problems arise:

• light yellow spots on the leaves - lack of nitrogen;
• drying the edges of the leaf plate is the lack of phosphorus;
• fitting the wound - lack of boron and manganese;
• the appearance of light mesh on shoots is a lack of iron.

Such problems are solved by introducing the necessary microelements with irrigation. More serious diseases caused by microbes and viruses require the use of fungicides.

Infectious diseases

The causes and treatment of home lemon diseases depend on the nature of the pathogen. If cracks appear on the trunk of the tree, the gum falls out, leaves the leaves and the tree dries away is a homamose. Fruits in lemon become soft and unpleasant to taste and smell. The disease is treated with a solution of copper sulfate, which processed the affected barrel. Lemon transplant to another soil.

Sent fungus - the second occurrence of a citrus disease grown in closed soil conditions. Symptoms of a sage fungus:

• dark spots in the form of plaque on leaves, stems and trunk;
• the growth of citrus is slowed down, the young greens fall.

The disease is washing the escape and trunk with a warm soap solution. Conduct regular processing under the cool shower. The room is regularly ventilated.

The passage is an infectious disease that affects the trunk first, and then all the plant. Signs of pasta:

• dark convex tubercles on the leaves;
• cracks on the trunk;
• dark spots and holes on the fruits.

To combat the disease, the plant is removed from the pot and processed from the roots to the top with a solution of copper sulphate. Transplant to another soil. The affected fruits and leaves burn.

To increase the immunity of the plant and protect against diseases, in the spring process the citrus with a solution of liquid copper and remove suspicious leaves and fruits. Plant regularly feed complex fertilizerscontains in a lit room with regular ventilation.

Cutter cultivation at home - the task is not from the lungs. Unfortunately, a lemon tree, like other types of citrus, grown in pots on the windowsill, are subject to various diseases. What domestic lemon diseases are the most common? How to determine what tree got sick? What are the measures for the treatment of a plant?

Like any other plant from the Citrus family, home lemon is subject to various diseases. This can be both viral, bacterial and fungal infections and diseases as a result of the impact of pests.

Infectious

According to flower flows, the most common infectious diseasescharacteristic of indoor citrus, are considered:

Gommoz

It is manifested in the form of red-brown longitudinal shapes of spots on branches and lemon trunk. Gradually occurs to death of the bark. From cracks, a sticky substance of a golden shade is distinguished, which freezes when contacting fresh air. Treatment: It is necessary to cut all the affected areas (the branches are completely removed), the resulting wounds to treat with 3% copper sulfate solution and smeared with garden water. The causes of the occurrence of the disease can be high humidity, overabundance of nitrogen, lack of phosphorus and potassium, as well as mechanical damage.

Root rot

Lemon sharply began to reset the leaves, but no exterior signs Diseases? Get off the plant and carefully inspect its root, it can be root rot. You need to remove all damaged areas, and put on sunny window sill, temporarily limiting watering.

Fungal

Most of all room lemon suffers from fungal infections, among which they allocate:

• a sage fungus (leaves and branches are covered with a row in the form of ashes);
• parsha (putrefactive spots on leaves, fruits and branches);
• warthism (similar to seal warts);
• antraznosis (and focusing, dieting branches, the appearance of red spots on the fruits).

Viral

Unfortunately, a home lemon affected by a viral infection cannot be cured. With proper care, you can only extend the life of the plant. The main diseases of the viral nature include:

• triculture (illness affects the leaves, then the bark, branches and covers all the tree completely);
• sheet mosaic (manifested in the form of strips or darkening strokes light color on foliage, in the future leads to deformation of leaves and stopping the church development);
• citrus Cancer (first signs - brown spots of different shapes and size on the leaves and fruits of the tree).

Pest

The danger of insects is that they not only damage the plant, but also are active carriers of different infections.

TLL ordinary

Amuses the root system indoor tree. Enters the apartment with already infected soil. It will take a tree transplant to a new and subsequent treatment with a solution of contact insecticide.

Cobed tick

Notice that the leaves began to twist and the web is formed around them? On your plant settled a web tick. Wines in rooms with insufficient moisture level. A solution of 1% will help to get rid of this pest boric acid. It will take from 1 to 5 abundant spraying.

Shield

Preventive measures and treatment

Often the reason for the occurrence of the disease becomes the absence of due. To prevent any disease, you should familiarize yourself in advance with the content of room lemon. And remember: any disease is easier to prevent than then eliminate.

The diagram of the treatment of indoor wood directly depends on the type of lemon disease. Viral, bacterial and fungal infections are manifested differently and have a different degree of danger.

An excellent microbiological preparation relating to new generation products is considered "phytosporin-M". The tool is applied in preventive purposes, and also has high performance in the fight against pathogens of various bacterial and fungal infections. Does not cause addiction, does not have unpleasant odor, non-toxic, can be used at home. Used for spraying and irrigation (breed the drug is necessary according to the instructions).

To the mainstream preventive measures Care for room lemon Believe:

1. daily inspection;
2. organization of competent care and citrus tree maintenance;
3. a new plant or a tree that recently sobbed, it takes some time to isolate from other indoor colors for a while;
4. weekly "bathe" lemon (the soil is pre-coated with a polyethylene film, after which the tree is abundant out of the shower);
5. mission to process the crown to soap foam.

Video "Diseases and pests of lemon"

From this video you will learn about what diseases and pests are dangerous for lemon and how to treat it.

Room lemon diseases can have fungal, viral and bacterial origin. They apply through insects, water drops during watering and spraying. It is important to remember: a healthy plant is at least susceptible to diseases than weakened. It is because at home just need to provide a flower due care and microclimate. The main thing in the treatment of the flower is the correct and timely diagnosis, adequate actions to eliminate the disease. So, the disease lemon room, their description with the photo, effective treatment from specialists.

Typical lemon lemon diseases and their treatment

Why do lemon yellow and twist the leaves? Why does the plant reset the leaves? Why leaves lemon are covered with black spots? The reason may be incorrect care, lack of trace elements or flower disease. If the leaves fall, it means that the lemon homemade may experience a lack of illumination, it was overflowed. Feed leaves from lemon if dry air indoors where it is located, or the horse system is broken.

Most often, the lemon falls out the leaves in the autumn-winter period, but the leaf fall may be observed at any other time of the year. Main reason: unfavourable conditions . For example, it can reset the leaves a newly purchased plant. Explanation Simple: In the Orange, where it is grown, the conditions of content differ from the microclimate in the apartment. Leisurefall is a reaction to a shift of growth microclimate. After buying, the lemon should acclimatize in the new conditions, it is undesirable to replant, it provides proper care. At this time, it is important not to overmine the flower, since without leaves, the process of evaporation of moisture is broken. Specialists recommend spraying more than to water, epin can be added to the solution.

Why does lemon drop the leaves if his place of growth did not change? Cause: Light shortage. This plant refers to the category of light-chapter, that is, needs a 12-hour light day. In the autumn-winter period, when the length of the daylight decreases, the plant needs to be highlighted with a luminescent lamp. The pot is better to have the place from the Western or East side of the house, it is possible with southern, but with the obligatory shading.

Lemon dropped the leaves if a transplant was performed with a full or partial replacement of soil. In this case, the root system is disturbed, which is necessarily reflected in the crown. It crepts. What to do? You need to help the flower to restore the root system. For this, watering is reduced, the flower is placed under greenhouse ( polyethylene film), which should not touch the leaves and flower branches. Spend spraying to maintain high level Humidity in greenhouse. Every day, the greenhouse is ventilated for 15 minutes to prevent the formation of condensate. Epin is added to a solution for spraying 1 time per week. Epin is added, and Kornin can be added to the watering solution. It does not need to cut the greenhouse. For the adaptation of the flower every day you increase the time of ventilation. The greenhouse is completely cleaned when new leaves appear on Lemon.

Lemon drops the leaves when it is affected by cancer, viral mosaic. All these diseases are virus character. In most cases in house growing Diseases treatment is not subject to, and the plant is completely discarded in order to prevent infection of the other colors.

Cancer on lemon leaves looks like brown stains of irregular shape, which inside dry and shuffle. With long-term illness, young lemon leaves develop deformed and small. Treatment is not subject to treatment, it can be prevented spring spraying Flower fungicides.

Fall leaves if the lemon home is striking sheet mosaic. On the leaves, it looks like light spots of the wrong shape, sometimes spread over the plate in the form of strokes. Mosaic is not amenable to treatment, the plant is in most cases removed.

Leaves are twisted in the lemon if irrigation mode is broken. This is a hammer or mooring of the soil. In the first case, you need to pour a flower with small portions of water, but preventing the soil in a pot. In both cases, the plant is placed under greenhouse, where it is regularly sprayed. The mooring of the soil in the pot leads to the roots. Damaged roots can no longer "drink" water, and therefore the plant suffers from moisture deficit even in the moistened soil. In this case, the watering is stopped. Lemon is removed from the pot, while the integrity of the earthen coma is impossible to break, and turn the paper. The latter will stretch out of the soil overabundance of moisture. Drying thus spend over 3 days, the plant must be pronounced. Then the flower is returned to the pot and organize greenhouse for him. Waterings do not spend, pay great attention to spraying.

Lemon leaves dry around the edges, if indoors heat and low humidity air. Optimal temperature mode For lemon +20 ... + 23 degrees, humidity - not lower than 70%. Otherwise, the plant is ill. Very often yellow leaves at the lemon room, if it is placed near it near the heating devices. The plant does not like dry air, and in winter it can suffer from lack of light. It is highlighted by a luminescent lamp.

Yellow and fall leaves if the lemon strikes the web tick. In this case, on back side Sheet plate will be present white flag, And on the branches - light, whitening web. Leaves are covered with small stains. How to treat? Need to wash the plant under the shower warm water, then processed by one of the preparations of phytodeterm, vertimer (three times with an interval of 10 days) or acarin, unoeval (4 times with an interval of 7-10 days). Better when the affected flower is isolated from the rest of the collection.

The most common and very dangerous for citrus is a pathogen mushroom, causing disease Annznosis - it is striking and branches, and leaves, and fruits. The anthraznosis causes the dedication of plant buds; The leaves are yellow and also fall; Fluids appear reddish stains; Branches die away.
Anthracnose control measures: it is necessary to cut dead shoots and carry out the treatment described above; In the future, abide by the rules for the care of citrus plants.

Citrus warts - this disease also causes pathogenic mushroom, affecting young shoots, leaves, citrus fruits. On young leaflets, fine transparent specks are manifested at the beginning. yellow colorAnd then these specks turn into warts of pinkish gray. The warts appearing on young shoots gradually grow up, forming a large thief, and can cause the death of escape. Citrus fruits appear orange spotswhich increase in size and paint in red-brown; Zazyzi fall. The development of this disease contributes to a high temperature in the room and the large humidity of the air.
Fighting warfare: trimming and burning of affected parts of the plant. The crown of citrus is sprayed with 1% mortar of burglar fluid. The first spraying is carried out in March, the second - after flowering (in June), the third spraying - in July.

Citrus gamum, or gamoting manifests itself in the form of longitudinal brown-red spots on the trunk and branches of citrus plants. The bark in these places is gradually dying, and from cracks flows into the air adhesive yellowish-golden liquid - gum.
The reasons for the occurrence of this disease can be several:
- Too deep landing (citrus seedlings can not be plugged in transplantation); the soil before planting is disinfected with 1% formalin solution);
- lack of drainage (when the disease occurs, it is necessary to stop watering for 2-3 days, and to further water citrus with a large limitation);
- an excess of nitrogen with a lack of phosphorus and potassium (not watering the plant with dung alive and reduce the dose of nitrogen);
- mechanical damage.
Measures to combat hommorm: first eliminate the cause of the disease.
Carefully cleaned the wound, it is disinfected by its 3% solution of copper sulfate (in 1 liter of water dissolved 30 g of copper sulfate and 100 g of negated or 200 g of hazed lime) and wedge the wound with a garden.
The wound processing is repeated several times until complete cure. If the plant can not be heal, it is burned.

Citrus cancer - bacterial disease. Manifests itself on fruits and leaves in the form of dark brown, bright spots. It is impossible to cure.

Phytoofluorosis - the trees grafted on an orange suffer greatly. More often in young seedlings on the trunk appears a ring of oily, brown stain. The causative agent is fungus. Outwardly, again, it looks like a gomum.
It is difficult to cure - a damaged place to clean and lubricate with copper vitrios, and better than something more abruptly. For the prevention of the plant dig up, inspect the roots.

Root rot - from the name it is clear what it is. In the pottery there are several varieties. As a rule, the gardener does not know about anything until a massive leafflower begins.
Dig a plant for inspection and if necessary, cut the affected roots acute knife. Proceed by their rooting stimulant. Replace the soil. Put in a greenhouse or at least most often wipe the leaves with a wet rag. Provide normal lighting. And in no case fill.

Trichetza is the elimination of the trunk cortex. In tristehes-resistant varieties, the virus is in the latent state.
Sustainable varieties ... That's exactly what I do not like most. Cut off the cuttings with an externally healthy plant, instill in a sighter, and after a few years the tree dot suddenly and for incomprehensible reasons begin to root. For example, this often happens to the doskuria lemon.
Therefore, it is recommended to multiply lemons with cuttings.

Xsiloporsiis (Psorozis A) - the virus up to 10 years can be in the latent state. When activated, the bark is damaged. Professionals, on plantations, check infection with the vaccination of sour lime. In room minidade, lovers do not know how to identify this disease and think that it is a homamum. It is impossible to cure.

Malseco - infectious dry drying. The disease on plantations in Georgia appears sharply in the spring, and indoor plants From autumn to spring. Causes foaming leaves. The disease begins with the ends of the branches. The affected wood, on a cut, acquires a reddish-orange color. You can immediately distinguish - stuffing from leaves remain on branches.
The novice gardeners remind - if several leaves dropped from the lower tier (or even almost around the edges of the branches) and the branches remained on the branches, it may well be caused by poor lighting in winter. Therefore, you should not panic prematurely.
How to treat the affected tree, I probably do not know. They say for lovers there is only one means - an ax.