Diseases and pests of indoor lemons: combating them. Causes and treatment of home lemon diseases

Lemon trees, like other indoor plants, can be affected by viral and infectious diseases and pests.

Although this does not happen often, it is better to find out what lemon diseases exist, how they affect the external condition of the plant, and what are the methods of their treatment. We will find out which viruses and infectious diseases affect the indoor lemon, which pests can attack it, and what to do in such cases.

Why does lemon get sick

Lemon is easily exposed to diseases and attacks of pests and viruses in the following cases:

If he did not manage to get stronger after recovering from other diseases.
If he is provided with unimportant care: contaminated soil, poor lighting, illiterate pruning, insufficient soil fertilization, improper watering, etc.
If a virus or pathogenic bacteria brought insects or a diseased stalk during grafting.

Viruses and bacteria can get on the plant when the room is ventilated, but this happens quite rarely.

Most often, viruses, bacteria and pests infect the leaves of indoor lemon. However, if the lemon sheds fruits and leaves, the reason for this may be a lack of micronutrients:

If the light leaves have a pronounced network of green veins, the lemon needs manganese, zinc or iron. Another reason is disturbances in the pH of the soil.
If an adult leaf loses its gloss, dries at the ends and turns reddish-brown, the plant lacks phosphorus.

If pale yellow specks appear on the leaf, and it turns yellow and dull over time, this indicates a lack of nitrogen.
If grooves appear between the veins of the leaves, the lemon needs potassium dressing.
If the plant sheds ovaries, it urgently needs manganese.

Too frequent feeding is not useful for the plant. If leaves fall on a lemon, what to do in this case? Postpone feeding and evaluate the correctness of care: suddenly you are doing something wrong.

Indoor lemon viral diseases

We will learn about three viral diseases in which lemon sheds leaves: why they often lead to the death of the plant, and whether they can be cured:

Sheet mosaic

Having got sick with it, the leaves are covered with dark or light strokes in the form of a mosaic, they lose their shape. The growth of the tree slows down noticeably.

This disease cannot be cured by any means, but symptoms can be reduced by regularly fertilizing the soil and providing the plant with proper care. If you have other lemons, it is better to destroy the plant infected with the virus as soon as possible.

Citrus Cancer

When infected with this virus, brown spots appear on foliage and fruits. When the form is neglected, the leaf falls off, the lemons acquire an ugly shape and a little later the tree dies.

It is impossible to cure citrus cancer: to prevent it in the spring, we treat the plant with a liquid copper fungicide.

Tristeza

Having picked up tristeza, the lemon loses its foliage, the bark or twigs die off on it. The plant dies - it cannot be cured.

Viruses most often infect weakened lemons that are poorly cared for.

Fungal and infectious diseases of indoor lemon

Consider the main diseases of lemons, which are fungal and infectious in nature, their symptoms and methods of treatment.

Often indoor lemons are affected by the following fungi and infections:

Gomoz

When homosed, the branches and trunk of the plant are covered with elongated spots of a reddish-brown hue, under which the bark quickly dies and cracks. The cracks ooze with a sticky, golden and fast-setting substance.

Causes of homoses: excessive humidity in the room, cuts or breaks in the bark, deficiency of phosphorus and potassium, excess nitrogen fertilizers, sore soil or deep burial of the trunk.

How is homoz treated? We cut off all the spots from the bark of the trunk, process the cuts with a 3% solution and use a putty from garden var... We repeat the treatment until the spots on the bark of the trunk stop forming. If branches are covered with spots, cut them off entirely and destroy them.

Anthracnose

it fungal disease, in which the leaves fall from the lemon, and what to do with this, many do not know. First, the leaf turns yellow, then flies around, as well as the buds. The branches of the plant gradually die off, and red spots appear on the lemons.

To get rid of the fungus, destroy the dead branches and spray the lemon with Fitosporin or a 1% solution of Bordeaux liquid. We spray three times.

Scab

Another fungal disease of indoor lemons is scab, in which young leaves become covered with transparent yellowish specks, gradually turning into pink-gray growths. Spreading over the leaf, these growths destroy it along with the shoots. Fruits with scab are covered with orange spots, eventually turning red-brown. In this case, the lemon drops the fruit.

In order not to destroy the whole plant, we cut off and destroy all the affected parts of the plant, and spray the crown with one percent Bordeaux liquid.

Melseco

With melseco, the lemon shoots dry up, the foliage falls off, starting from the tips of the branches, and the cut of the branch turns red.

Poor lighting is to blame for this lemon disease: in winter, the plant did not have enough light, and it was not supplemented.

There is no cure for melseco: we observe the plant, and if it continues to hurt, we destroy it.

Root rot

If the lemon abruptly drops the leaf, dig it up and examine the roots. Having found rotten roots, we cut them off and transplant the lemon into a new disinfected soil.

We put the transplanted plant on a light windowsill, and avoid watering for a week, just wipe the leaves with damp gauze or a sponge.

In addition to infectious and viral diseases, indoor lemons are affected by harmful insects. We will find out which pests are attacked by a lemon grown at home, and how to deal with them.

Shield

Scale larvae settle on the underside of the leaves and subsequently move to outside... The plant withers, dries up, quickly picks up viruses and infections.

To get rid of the scale insect, we use a special insecticide or soap solution, for which we dilute 2 tbsp in water (1 l). any liquid soap... Moisten all areas affected by insects with soapy water. We wait one hour, rinse the plant under the shower and repeat the treatment a couple of days later.

Common aphid

Colonies of light green aphids usually settle on young shoots that are not overgrown with bark. First, they attack the bottom of the leaf, then go upstairs, simultaneously sucking the juices. The foliage collapses and dies.

If there are few aphids, we cut off the affected shoots and destroy them together with insects, after which we feed the plant with complex fertilizer. If the aphid has covered most indoor lemon, spray the tree with insecticide or garlic infusion, for which we peel 4 heads of garlic and soak them in 5 liters for 24 hours. After we filter.

Spider mite

Young twigs and leaves are often affected by this insect. The foliage curls up and a spider web appears around it. The lack of air humidity is to blame for the appearance of a spider mite.

To get rid of insects, spray the tree with a 1% solution. boric acid, carrying out the procedure four times.

Root aphid

Unlike ordinary aphids, root aphids found in infected soil affect the roots.

To destroy it, we transplant the lemon into disinfected soil by treating the roots with a contact insecticide or a weak garlic tincture.

In many sources, you can find advice on treating lemon with an alcohol solution - this is strictly prohibited. Lemon is intolerant to alcohol.

As you can see, lemon diseases are numerous and sometimes very serious: some lead to the death of the plant. To protect it from misfortunes, plant the plant only in disinfected soil, give it a regular shower and wipe the foliage and branches with wet gauze, treat the crown with soapy water once a month, and often inspect the tree for infection with diseases or insects.

The most common and very dangerous for citrus fruits is a pathogenic fungus, disease-causing anthracnose - it affects branches, leaves, and fruits. Anthracnose causes plant buds to fall off; the leaves turn yellow and also fall off; reddish spots appear on the fruits; the branches die off.
Anthracnose control measures: it is necessary to cut off dead shoots and carry out the treatment described above; in the future, follow the rules for caring for citrus plants.

Citrus wart - this disease is also caused by a pathogenic fungus that affects young shoots, leaves, citrus fruits. On young leaves, small transparent specks appear at first. yellow color, and then these spots turn into pinkish-gray warts. Warts appearing on young shoots gradually grow, forming a large growth, and can cause the death of the shoot. Orange spots appear on citrus fruits, which increase in size and turn red-brown; the ovaries fall off. The development of this disease is facilitated by heat in the room and high humidity.
Wart control measures: pruning and burning of the affected plant parts. The crown of citrus fruits is sprayed with a 1% solution of Bordeaux liquid. The first spraying is carried out in March, the second after flowering (in June), the third spraying in July.

Hommosis of citrus fruits, or gum flow, manifests itself in the form of longitudinal brown-red spots on the trunk and branches of citrus plants. The bark in these places gradually dies off, and a gummy, yellowish-golden liquid, gum, which solidifies in the air, flows out of the cracks.
There can be several reasons for the occurrence of this disease:
- planting too deep (citrus seedlings should not be buried when transplanting); the soil is disinfected with a 1% formalin solution before planting);
- lack of drainage (when a disease occurs, it is necessary to stop watering for 2-3 days, and then water citrus fruits with great restriction);
- an excess of nitrogen with a lack of phosphorus and potassium (do not water the plant with slurry and reduce the dose of nitrogen application);
- mechanical damage.
Measures to combat gommosis: first, eliminate the cause of the disease.
Carefully clean the wound, disinfect it with a 3% solution of copper sulfate (30 g of copper sulfate and 100 g of quicklime or 200 g of slaked lime are dissolved in 1 liter of water) and cover the wound with garden varnish.
The wound treatment is repeated several times until complete healing. If the plant cannot be healed, it is burned.

Citrus Cancer - A bacterial disease. It appears on fruits and leaves as dark brown, bright spots. It is impossible to cure.

Late blight - Trees grafted onto an orange are severely affected. More often, young seedlings have an oily, brown spot on the trunk of a ring. The causative agent is a fungus. Outwardly, again, it looks like Gommoz.
It is difficult to cure - clean the damaged area and lubricate it with Copper Vitriol, or better with something more abrupt. For prevention, dig up the plant, examine the roots.

Root Rot - From the name it is clear what it is. There are several varieties in the pot culture. As a rule, the gardener does not know about anything until the massive leaf fall begins.
Dig up the plant for inspection and, if necessary, cut off the affected roots with a sharp knife. Treat them with a rooting stimulant. Replace the soil. Place the tree in a greenhouse, or at least often wipe the leaves with a wet cloth. Provide adequate lighting. And in any case, do not fill.

Tristeza - Dying off of the trunk bark. In varieties resistant to tristesis, the virus is in a latent state.
With resistant varieties ... This is what I don't like the most. You cut a stalk from an outwardly healthy plant, graft it onto a seedling, and after a few years, the rootstock of the tree suddenly and for some unknown reason begins to hurt. For example, this often happens with the Dioscuria lemon.
Therefore, it is recommended to propagate lemons by cuttings.

Xylopsorosis (Psorosis A) - The virus can be latent for up to 10 years. When activated, the cortex is damaged. Professionals on the plantations test the infestation by grafting sour lime. In indoor mini gardening, amateurs do not know how to define this disease and think that it is Gommoz. It is impossible to cure.

Malseko - Infectious drying of shoots. The disease on plantations in Georgia appears abruptly in the spring, and in indoor plants from autumn to spring. Causes leaves to fall. The disease begins at the ends of the branches. Affected wood becomes reddish-orange when cut. You can immediately distinguish - the petioles from the leaves remain on the branches.
I remind novice gardeners that if a few leaves have fallen from the lower tier (or even almost at the edges of the branches) and cuttings remain on the branches, this may well be caused by poor lighting in winter. Therefore, do not panic prematurely.
I don’t know for sure how to treat the affected tree. They say for amateurs there is only one tool - an ax.

Wonderful garden and orchard, without problems and without the hassle!

Indoor lemon pests and diseases

Lemon, like all indoor plants, can periodically be affected by diseases and pests.

Common diseases of lemon.
Of the diseases affecting homemade lemon, gum disease (gommosis) and soot fungus are especially dangerous.

Gommoz. In case of gommosis disease, cracks appear on the bark, most often at the bottom of the trunk, from which a sticky liquid - gum emerges, the bark gradually dies off, from this the tree begins to wither and may die.
Most often, homozy manifests itself in plants grown from cuttings. Factors contributing to the appearance of the disease: deep planting, prolonged waterlogging of the soil, watering cold water and excess nitrogen fertilization.

Gomoz on the trunk of a lemon

Control measures: first of all, you need to eliminate the causes of homoz. The wounds that appear on the bark are thoroughly cleaned, disinfected with a 3% solution of copper sulfate and covered with a paste of copper sulfate and lime. You can also use garden pitch or clay for covering.

Sooty fungus on lemon leaves

Sooty fungus. On the leaves, and with the development of the disease, a dark bloom appears on the branches and on the trunk. This is a sooty fungus, it settles on the secretions of sucking insects, such as scale insects and scale insects. Sooty fungus interferes with the normal growth and development of plants.

Control measures: fungus from the leaves, remove with a wet cloth, and clean from the branches and trunk with brushes. In addition to such removal, the trunks and branches covered with a sooty fungus should be whitened with lime, and the room where the diseased plant is located should be thoroughly ventilated.

Pests

Lemon trunk shield

Shield
The scale insect is one of the most common lemon pests and is most often found on weakened plants. These are small insects, they can move only in the larval state. Adult pests stick to the veins of the leaf from below, and persist for quite a long time. With prolonged habitation on the plant, the scale insects reproduce well and also affect the upper side of the leaves and even young shoots. Plants, if severely damaged by a pest, are depleted and dry out.

Mealybug
Worms, insects similar to scale insects, but larger and more mobile, cause harm in the same way as scale insects.

Aphid
It settles in a colony on flowers, ovaries, shoots and on the underside of foliage. It feeds on juice, which is why the foliage, curling up, dries up. Insects, the length of which is 1.2-2.1 millimeters, are colored dark green.

Control measures:
Lemon leaves are washed from scale insects, worms and aphids with soapy water or tobacco infusion using a toothbrush. For 1 liter of water, you need to take 50-60 g of tobacco, and insist for two days. The rinsing should be repeated several times. A solution of green soap with anabasine sulfate gives good results. In a liter of water, dissolve 4-5 g of green soap and add 1.5-2 g of anabasine sulfate. This solution is washed or sprayed on the affected plants. After a day, the solution should be washed off, for this the plants are washed clean warm water... This spraying is repeated 3 times every 7 days. You can also use the following solutions:

NIUIF-100 (thiophos) - 10 g per 10 liters of water; spraying with thiophos can be combined with treatment with Bordeaux liquid or superphosphate extract;

Chlorophos - from 30 to 100 g per 10 liters of water (after checking for a burn);

Scabbard on lemon leaves

BI-58 or rogor - 10 g per 10 liters of water;

Anabazine sulfate - 30 g per 10 liters of water plus 40 g of green or laundry soap;

Karbofos - 30 g per 10 liters of water;

Ethersulfonate - 30 g per 10 liters of water;

Soap-kerosene emulsion 10 g of kerosene and 5 g of soap per 1 liter of water; the solution is thoroughly mixed;

Onion gruel (grated);

Infusion of garlic (3 medium cloves per 1 glass of water; leave for one day in a sealed container);

Spider mite infested lemon

Red, or spider mite
The pest braids the underside of the leaf, where it settles. Insects small size(up to 0.4 millimeters), so they are not always immediately detectable with the naked eye. The juice of the leaves is food for insects, so the leaves turn yellow and dry out prematurely. Ticks appear more often at low air humidity and high temperatures.
Control measures:
Dusting with sulfur is used against the red tick.
To kill ticks, the same pesticides are used as in the fight against scale insects and worms. If there are no pesticides, you can spray the plants daily with a strong jet. cold water, especially the underside of the leaves.

Indoor lemon diseases: causes and treatment

Many vegetable growers mistakenly assume that a houseplant will not be exposed to diseases and pests at home. However, a lemon that grows at home is still a plant. Therefore, the risk of a disease or a tick still exists. Don't panic ahead of time. In this article, we will tell you what lemon diseases exist and how to deal with them.

Causes of the appearance of diseases in homemade lemon

There are many reasons for the disease in a houseplant. The main ones are:

poor quality soil;
inoculum;
containers that have already been used before;
weakened immunity resulting from improper watering, air temperature, fertilization, lighting, pruning;
weakened immunity caused by a previous illness;
ingress of spores, various viruses and bacteria during the summer airing period;
viruses and bacteria that got into the apartment "thanks" to insects;
mite.

There are many other reasons as well. However, they are less common.

Harmful insects for indoor lemon

The main pest of citrus fruits is aphids. It destroys the leaves of the plant, then spreads to the branches of the tree. At the same time, the aphid chooses the youngest and most delicate leaves. What does a pest look like?

This insect is small in size, has a light green color... The pest first attacks the inside of the leaves, which is why it is so difficult to spot it at an early stage of infestation. Then the insect along the branch captures the entire plant. The first sign of aphid infestation is leaf rolling. homemade lemon... The insect can get on citrus from another houseplant, for example, fuchsia.

This culture is a favorite delicacy of aphids. You can hurt a lemon by bringing wildflowers home. The pest can hide in the soil, and different cultures suffer from it. Therefore, taking untested soil after other plants or even another lemon, you run the risk of completely ruining the indoor tree.

However, do not immediately put an end to the plant. The success of the fight depends on how quickly you identify the disease. If the pest did not have time to spread far, then it will be enough to cut off the infected branches and crush the pests.

Many gardeners use folk methods. For example, an infusion of garlic helps a lot against a pest. Use eight heads of garlic to make it. They should be pre-cleaned and grinded. Stir the finished mixture with water in a ten-liter bucket and leave for one day.

The infusion will be ready after you drain it.
If aphids appear due to poor-quality soil, then soil replacement will be required. Before that, you need to prepare the plant. Place the lemon in a contact insecticide solution or garlic infusion. However, this time the concentration of the drug should be half as much as in the fight against aphids.

Another pest of homemade lemon is the scale insect.

In this state, he cannot resist bacterial and viral diseases. However, there is also a right for this insect. As with aphids, this is great. garlic water, insecticides, and soap solution. The soap infusion is prepared as follows: dilute two tablespoons of liquid soap in a liter of water. Then treat the infected leaves with this preparation. After sixty minutes, rinse the lemon thoroughly. It is recommended to repeat the procedure after two or three days.

Spider mite

An ordinary spider mite can also kill a plant. He also likes to feast on young citrus leaves. The main sign of the pest is the characteristic cobweb on the leaves of the plant. Very often, spider mites appear on crops growing in dry air.

Spider mites are afraid of moisture. Use a 1% boric acid solution to fight the mite. Most often, one spraying is enough to kill the tick. However, if the tick does not give up, then repeat the procedure four or five times. An interesting fact is that pest control is equal to the prophylaxis procedure against viral diseases.

Viral and bacterial diseases

Sooty fungus

Some of these diseases are treated quickly and painlessly for the plant. However, there are diseases that are difficult or impossible to treat. Such a disease is a sooty fungus, which greatly weakens the plant, leads to drying out and weakening in growth. You can recognize the disease by ash bloom on the leaves. It is not difficult to cure the plant. You need to rinse it with warm water using a dish sponge. It is recommended to ventilate the area where the lemon was located before placing it back.

Another disease is scab. It affects the leaves and branches of the plant. Scab is characterized by the appearance of spots on the leaves of lemon, which gradually darken and become soft. The diseased areas of the lemon rot and fall off. The disease is carried by wind or insects. The fight against the virus must begin with preventive measures. V spring treat the culture with a 2% solution of copper sulfate. If the disease does appear, immediately destroy the affected areas of the plant. Treat the rest with Bordeaux solution.

Wart

Another fungal disease that can infect indoor lemon is wart. Judging by the name, you can determine the main symptom of the disease. The fact is that growths form on the leaves of the culture. However, they are not at all as harmless as they might seem. The fungus depletes the plant and destroys future crops. The methods of dealing with the scab are the same.

Root rot

Infection is much more difficult to cope with. The most common lemon diseases are gommosis and root rot. The first infection is characterized by rotting and cracking of the tree bark. In this case, you need to water the culture with warm water.

The main purpose of root rot is evident from the name. The infection affects the roots of the plant. If the lemon leaves wither, the branches dry out, and the leaves begin to fall off prematurely, then this is root rot. The infection control measures are as follows. Remove the tree from the container and remove the soil from the roots. We sterilize the affected soil. Pour new soil into the container.

We cut off the rotten areas with a knife. We place the root system of the lemon in a solution of potassium permanganate for about sixty minutes. Further, the plant is removed from the solution and slightly dried. Treat the cut areas with wood ash. Then we plant the treated plant in a new place of growth. However, the work did not end there. You need to keep a close eye on the lemon and fertilize it constantly.

So, we have listed the main diseases of lemon, and also told what their treatment is. Lemon pests are no longer afraid of you.

Fighting diseases of indoor home lemon

Homemade lemon, like any other citrus crop, is susceptible to many diseases. It can be infectious, viral, fungal diseases, as well as diseases resulting from improper care of the plant.

Diseases of indoor lemon often occur due to a lack of trace elements. So, for example, if citrus is deficient in nitrogen, small, light yellow spots... With a lack of phosphorus, the leaf plate grows dull, and its edges dry out. If the tree does not have enough iron, a light green mesh appears on its leaves; if there is a lack of manganese or boron, the ovaries fall off. To prevent this, you should regularly add mineral and organic fertilizers... In this case, it is important to observe the dosage, since an excess of fertilizers also negatively affects the condition of this plant.

Diseases of lemon at home and their photos

Diseases of lemon at home can be caused by pathogenic microorganisms: fungi, viruses, bacteria, mycoplasmas. In the affected individuals, various defects appear (shrinkage, deformation of fruits and leaves, spotting, growths, and others). Pathogens are spread by wind, insects, and water droplets during watering and spraying.

Weakened trees are most often susceptible to diseases, so it is important when growing lemon to create all the necessary conditions for its full development, carry out proper care, conduct regular, thorough examinations. The fight against lemon diseases should be carried out when the first signs appear. From a diseased individual, it is required to cut off all affected parts so that they do not weaken the tree.

Most dangerous diseases homemade lemons:

For the prevention and elimination of pathogens of fungal and bacterial diseases, the biofungicide "Fitosporin" is recommended, which is watered and sprayed with citrus.

This disease occurs in the lower part of the trunk. Gradually rises up to the branches and down to the roots of the tree. In places of damage, bulges are formed in which gum accumulates, which is a yellow or brown liquid that solidifies in air. The affected areas crack and die. Wounds appear on the tree. With a strong defeat of lemon, the leaves dry up and fall off. Individuals infected with gommosis continue to produce crops, but their fruits become smaller and lose their taste qualities... If you do not take measures to eliminate this disease, the citrus will die.

Gommosis often affects leaves and fruits. Brown spots appear on the leaves, which grow over time. On the affected fruits, the skin darkens and coarsens. The pulp softens, rots and takes on an unpleasant odor.

It is quite difficult to treat this disease. Sick areas are cleaned and treated with a solution of copper sulfate. After that, the tree is removed from the soil, its roots are cleaned and transplanted into fresh soil. Diseased bark and wood are cut out, all cleanings are burned.

Scab and other lemon leaf diseases

Lemon can also infect scab, which can be recognized by raised spots that appear on the leaves, branches, citrus fruits. After a while, instead of these spots, holes are formed, after which the leaves fall off, the fruits and bark of the branches crack. The causative agent of scab is a pathogenic fungus that can hibernate in fallen leaves, spread by wind and insects. It develops rapidly in humid environments.

To prevent this disease in the spring, the crown and soil should be sprayed with a solution of copper or ferrous sulfate... The diseased plant is sprayed after bud break with Bordeaux liquid. Secondary spraying is carried out after flowering. To do this, you can use copper oxychloride, cuprozan and other fungicides.

The affected lemon parts must be collected and burned. Change the soil. In the spring, before the swelling of the kidneys, all diseased branches are removed. The tree is sprayed mineral fertilizers... For this, urea (10%), ammonium nitrate (10%), nitroammofoska (10%), calcium chloride (70%) are used. The drug "Strobilin" is effective in the fight against scab.

Sooty fungus

It appears on the leaves, later on the branches and trunk in the form of a dark bloom. This disease slows down the growth of the plant, interferes with its normal development.

When signs of soot fungus appear, the plaque is washed off with clean warm water. It is helpful to rinse the wood under the shower. The room where the affected lemon is located must be well ventilated.

Wart

Wart is one of the diseases of lemons that occurs in indoor conditions... Young shoots, fruits and leaves are attacked by a pathogenic fungus.

Small yellowish spots appear on the leaves, which after a while turn into gray warts. On the shoots, warts increase in size, forming large growths, which leads to the death of the shoot. Brown spots form on the fruits, the ovaries fall off. Wart develops rapidly in extreme heat and high humidity.

To eliminate this disease, the affected parts of the plant are cut off and burned, then the crown is sprayed with Bordeaux liquid. The first spraying is carried out in March, the second immediately after flowering, and the third in July.

Root rot on lemon

Root rot on lemon is not noticeable until intensive leaf fall begins. When this sign appears, the tree is dug up and examined. root system... If there are lesions, they are removed with a sharp knife. After that, the citrus is transplanted into fresh soil and placed in a bright place. The next few days do not water. Wipe the leaves with a damp cloth.

Sometimes, when root rot appears, dark brown spots appear on the trunk, through which dirt seeps. Over time, the bark dries up and dies off.

Photos of the above diseases of indoor lemon can be seen below:

Lemon viral diseases

Homemade lemon diseases such as citrus cancer, leaf mosaic, and tristeza are viral.

Citrus cancer manifests itself as dark brown spots on leaves and fruits. With prolonged illness, the leaves fall off, the fruits are formed with defects. This disease leads to the death of the plant. Not subject to treatment.

For the prevention of citrus cancer, spring processing tree fungicide liquid copper.

Leaf mosaic is recognized by light, sometimes dark green stripes or streaks on the leaves. It leads to deformation of the leaf plate, as well as to a slowdown in the growth of the tree. Not subject to treatment. At good care and regular feeding becomes less pronounced.

Tristeza - leads to drying out and leaf fall. With a severe defeat, branches, bark and whole trees die off. Not subject to treatment.

Lemon disease - sticky leaves

Quite often, citrus owners are faced with deformation, drying and dropping of its leaves.

Lemon leaf diseases occur by different reasons... It may be a lack of nutrients, poor care, pest infestation, tree disease.

The reason for leaf fall is often a lack of light, dry air or too high air temperature. Watering with cold and chlorinated water, an excess of moisture in the soil, a violation of the acid-base balance of the soil negatively affects the leaves and the plant as a whole. In addition, lemon leaves react sharply to any changes, whether it be rearranging it to a new place or changing the temperature regime.

In some cases, citrus leaves become sticky. The sticky lemon leaves look like they've been sprinkled with syrup. Such a disease, as a rule, is caused by a scabbard that has settled on a tree. If measures to combat this pest are not taken in a timely manner, soot fungus may develop in the sticky liquid. To eliminate sticky plaque, the leaves are wiped with a solution of transformer oil (6 ml per 1 liter of water). Re-processing is carried out after 5-7 days. The solution not only effectively removes sticky plaque, but also destroys the young scale insect, which has not yet been covered with a protective shell. If the treatment is not carried out, the plant will die.

You can use another way to heal the tree. In the warm season, citrus is sprayed with karbofos or tobacco solution. To completely eliminate the disease, 2-3 such treatments are required with an interval of 7-10 days.

The characteristic signs of lemon diseases are presented in the following photos:

Diseases of indoor lemon

Room lemon- a living creature, therefore, he may have problems. The troubles that happen with lemon can be divided into three groups: improper care, pests, diseases.

Failure to comply with the rules of plant care (watering, lighting, temperature, lack of nutrition, transplantation and disturbance of the pH balance of the soil). With insufficient watering, the tree dries up, with excessive watering, yellowness of the leaves appears and the root system decays.

The lack of a particular trace element can be determined visually. With a lack of iron, the leaf, which has a rich green color, first becomes "speckled" (alternating green and yellow spots), then fades, turns yellow and dries up.

With a lack of phosphorus, the leaves acquire an earthy-rusty color, the tips of the leaves dry out. With a lack of potassium, the leaves wrinkle, forming "wrinkles" and folds.

With a lack of manganese and boron, the ovaries crumble. Correcting the situation is much more difficult than watering a lemon on time with special fertilizers for citrus fruits.

Lemon pests and how to deal with them

Shields and false shields(the larvae are hidden by a dark brown shield). If they are present, the leaves fall off, the branches dry out, the plant slowly dies. Pests must be cleaned off (with a toothbrush or sharp stick), washed with lemon with soapy emulsion. You will learn about another way to combat these pests from the video.

Spider mite(citrus red mite). The larvae are located on the underside of the leaf; in this case, the leaf is shrouded in cobwebs, which gradually envelop the entire plant. The leaves become discolored, dry up and fall off, flowers and fruits are damaged. Spider mites are more likely to appear in dry indoor air. In case of spider mite infestation, lemon can be sprayed with 0.15% Aktelika solution. Spraying will have to be repeated three times with an interval of 10 days.

Mealybug(larvae and females feed on all aerial part). If they are present, sticky secretions of the worm appear on the surface of the leaves, later the leaves dry out, spots and cracks form on the fruits. Fruits, not ripe, fall off. The plant must be periodically inspected and mechanically destroyed the larvae and females of the mealybug.

Citrus aphid(small insects of black or yellow-green color). The tops of young shoots are paralyzed. If they are found, it is necessary to spray the lemon with a 0.15% Aktelika solution. Spraying will have to be repeated three times with an interval of 10 days. To prevent aphids from appearing, you can put a pot of fragrant geraniums next to the lemon.

Thrips(look like a black line on the leaves, so small). They shit more than suck the juices from the plant, they can fly, they spread viruses. To destroy them, you need to wash the tree from the shower (cover the soil with a film) and treat it with a soapy emulsion.

Whitefly(white small moth). Larvae of greenish-white color are located on the lower part of the leaves. Getting rid of them is quite problematic. In this case, the lemon is sprayed with insecticides at least 5 times every 3 days.

Diseases of indoor lemon and how to treat them

Indoor lemons can contract many diseases caused by fungi, viruses, bacteria and mycoplasmas. The result of their impact is a variety of spots, ulcers, rot, wilting, growths, overgrowths, etc. Harmful microorganisms are spread by insects, water droplets during spraying and irrigation, wind.

Symptoms of infection of indoor lemons by bacteria and fungi are similar, but with an infection caused by fungi, along with increasing spots, fungal spores are visible on them - gray bloom, brown pustules or black dots of sporulation.

Diseases most often appear on weakened plants, therefore, proper care for lemons at home, pest control, cutting out the affected parts of the plant, and processing the cuts (you can use activated carbon) are important. It is better to immediately remove all flowers, buds and fruits from a diseased lemon so that they do not weaken the plant.

To suppress many pathogens and for prophylaxis, it is effective to use the biological product "Fitosporin" (the drug is not toxic, odorless). They are sprayed and added to the water for irrigation according to the instructions. You can spray 2-3 times with a 1% solution of Bordeaux liquid.

Anthracnose- the most common lemon disease, caused by a pathogenic fungus. With anthracnose, the buds fall, the leaves turn yellow and fall, reddish spots appear on the fruits, the branches die off. It is necessary to cut off dead shoots and carry out the treatment described above.

Scab(citrus wart) is also a common disease of a fungal nature. In this case, small transparent yellowish spots appear on young leaves, turning into pink-gray warts. Warts grow over time, forming an outgrowth, later the shoot dies. Orange spots appear on the fruits, increasing in size, they become reddish-brown, the ovaries fall off. The affected parts of the plant must be cut off and burned, the lemon crown should be sprayed with a 1% solution of Bordeaux liquid.

Gomoz(gum flow) is manifested by longitudinal brown-red spots on the branches and trunk of the lemon. The bark in these places gradually dies off, a gummy golden liquid flows out of the cracks, which freezes in air.

There may be several reasons for this disease: deep planting of seedlings, not disinfected soil, lack of drainage, excess nitrogen, lack of phosphorus and potassium, mechanical damage, too high humidity air.

For the treatment of homoz, it is necessary to find out the cause of the disease and eliminate it. The lesions on the trunk must be cleaned sharp knife, cutting out the affected areas, disinfect with a 3% solution of copper sulfate and cover the wounds with garden varnish. It is recommended to treat the wound several times until it is completely healed. Affected thin branches better cut and burn.

Sooty fungus can settle on lemon when infected with scale insects, mealybug... In order for it not to appear, it is necessary to deal with pests in a timely manner.

Inspect lemons more often so you can spot pests and diseases early. In time Taken measures won't do much harm to the lemon.

The video below shows another way to deal with scabbards

vdomashnih-uslovijah.ru

Lemon diseases

Lemon trees, like other indoor plants, can be affected by viral and infectious diseases and pests.

Why does lemon get sick

Lemon is easily exposed to diseases and attacks of pests and viruses in the following cases:

If he did not manage to get stronger after recovering from other diseases.
If he is provided with unimportant care: contaminated soil, poor lighting, illiterate pruning, insufficient soil fertilization, improper watering, etc.
If a virus or pathogenic bacteria brought insects or a diseased stalk during grafting.

Viruses and bacteria can get on the plant when the room is ventilated, but this happens quite rarely.

Most often, viruses, bacteria and pests infect the leaves of indoor lemon. However, if the lemon sheds fruits and leaves, the reason for this may be a lack of micronutrients:

If the light leaves have a pronounced network of green veins, the lemon needs manganese, zinc or iron. Another reason is disturbances in the pH of the soil.
If an adult leaf loses its gloss, dries at the ends and turns reddish-brown, the plant lacks phosphorus.

Why does lemon shed its leaves

If pale yellow specks appear on the leaf, and it turns yellow and dull over time, this indicates a lack of nitrogen.
If grooves appear between the veins of the leaves, the lemon needs potassium dressing.
If the plant sheds ovaries, it urgently needs manganese.

Too frequent feeding is not useful for the plant. If leaves fall on a lemon, what to do in this case? Postpone feeding and evaluate the correctness of care: suddenly you are doing something wrong.

Indoor lemon viral diseases

We will learn about three viral diseases in which lemon sheds leaves: why they often lead to the death of the plant, and whether they can be cured:

Sheet mosaic

Having got sick with it, the leaves are covered with dark or light strokes in the form of a mosaic, they lose their shape. The growth of the tree slows down noticeably.

Citrus Cancer

When infected with this virus, brown spots appear on foliage and fruits. When the form is neglected, the leaf falls off, the lemons acquire an ugly shape and a little later the tree dies.

It is impossible to cure citrus cancer: to prevent it in the spring, we treat the plant with a liquid copper fungicide.

Tristeza

Having picked up tristeza, the lemon loses its foliage, the bark or twigs die off on it. The plant dies - it cannot be cured.

Viruses most often infect weakened lemons that are poorly cared for.

Lemon diseases: description and treatment

Fungal and infectious diseases of indoor lemon

Consider the main diseases of lemons, which are fungal and infectious in nature, their symptoms and methods of treatment.

Most often, indoor lemons are affected by the following fungi and infections:

Gomoz

Causes of homoses: excessive humidity in the room, cuts or breaks in the bark, deficiency of phosphorus and potassium, an excess of nitrogen fertilizers, diseased soil or deep burial of the trunk.

How is homoz treated? We cut off all the spots from the bark of the trunk, process the cuts with a 3% solution and use a putty from a garden varnish. We repeat the treatment until the spots on the bark of the trunk stop forming. If branches are covered with spots, cut them off entirely and destroy them.

Anthracnose

This is a fungal disease in which leaves fall from a lemon, and many do not know what to do with this. First, the leaf turns yellow, then flies around, as well as the buds. The branches of the plant gradually die off, and red spots appear on the lemons.

To get rid of the fungus, destroy the dead branches and spray the lemon with Fitosporin or a 1% solution of Bordeaux liquid. We spray three times.

Scab

In order not to destroy the whole plant, we cut off and destroy all the affected parts of the plant, and spray the crown with one percent Bordeaux liquid.

Melseco

With melseco, the lemon shoots dry up, the foliage falls off, starting from the tips of the branches, and the cut of the branch turns red.

Poor lighting is to blame for this lemon disease: in winter, the plant did not have enough light, and it was not supplemented.

There is no cure for melseco: we observe the plant, and if it continues to hurt, we destroy it.

Root rot

If the lemon abruptly drops the leaf, dig it up and examine the roots. Having found rotten roots, we cut them off and transplant the lemon into a new disinfected soil.

We put the transplanted plant on a light windowsill, and avoid watering for a week, just wipe the leaves with damp gauze or a sponge.

Indoor lemon pests

In addition to infectious and viral diseases, indoor lemons are affected by harmful insects. We will find out which pests are attacked by a lemon grown at home, and how to deal with them.

Shield

Scale larvae settle on the underside of the leaves and subsequently move to the outside. The plant withers, dries up, quickly picks up viruses and infections.

To get rid of the scale insect, we use a special insecticide or soap solution, for which we dilute 2 tbsp in water (1 l). any liquid soap. Moisten all areas affected by insects with soapy water. We wait one hour, rinse the plant under the shower and repeat the treatment a couple of days later.

Indoor lemon pests

Common aphid

If there are few aphids, we cut off the affected shoots and destroy them together with insects, after which we feed the plant with complex fertilizer. If the aphid has covered most of the indoor lemon, spray the tree with insecticide or garlic infusion, for which we peel 4 heads of garlic and soak them in 5 liters for 24 hours. After we filter.

Spider mite

Young twigs and leaves are often affected by this insect. The foliage curls up and a spider web appears around it. The lack of air humidity is to blame for the appearance of a spider mite.

To get rid of insects, we spray the tree with a 1% solution of boric acid, carrying out the procedure four times.

Root aphid

Unlike ordinary aphids, root aphids found in infected soil affect the roots.

To destroy it, we transplant the lemon into disinfected soil by treating the roots with a contact insecticide or a weak garlic tincture.

In many sources, you can find advice on treating lemon with an alcohol solution - this is strictly prohibited. Lemon is intolerant to alcohol.

Lemon: diseases and their treatment

Diseases of indoor lemon can be of fungal, viral and bacterial origin. They are spread through insects, water droplets when watering and spraying. It is important to remember: a healthy plant is less susceptible to diseases than a weakened one. That is why at home it is simply necessary to provide the flower with proper care and microclimate. The main thing in the treatment of a flower is the correct and timely diagnosis, adequate actions to eliminate the disease. So, indoor lemon diseases, their description with a photo, effective treatment from specialists.

Typical diseases of indoor lemon and their treatment

Why do lemon leaves turn yellow and curl? Why does the plant shed its leaves? Why do lemon leaves get black spots? The reason may be improper care, lack of trace elements or flower disease. If the leaves fall, then the homemade lemon may lack lighting, it has been poured. Leaves of a lemon fall if the air in the room where it is located is dry, or the equine system is disturbed.

Most often, lemon leaves fall in autumn winter period, but leaf fall can be observed at any other time of the year. main reason: unfavourable conditions . For example, a recently purchased plant may shed its leaves. The explanation is simple: in the greenhouses where it is grown, the conditions of detention differ from the microclimate in the apartment. Leaf fall is a reaction to a change in the microclimate of growth. After the purchase, the lemon must acclimatize in the new conditions, it is undesirable to transplant it, it is provided with proper care. At this time, it is important not to overflow the flower, since without leaves, the process of moisture evaporation is disrupted. Experts recommend spraying more than watering; epin can be added to the solution.

Why does a lemon shed its leaves if its place of growth has not changed? Reason: lack of light... This plant belongs to the category of light-loving, that is, it needs 12-hour daylight hours. In the autumn-winter period, when the length of daylight hours decreases, the plant must be illuminated with a fluorescent lamp. It is better to place the pot on the west or east side of the house, it is also possible on the south, but with the obligatory shading.

Lemon shed its leaves if a transplant was performed with full or partial soil replacement... In this case, the root system is disturbed, which is necessarily reflected in the crown. She crumbles. What to do? It is necessary to help the flower to restore the root system. To do this, watering is reduced, the flower is placed under a greenhouse (plastic wrap), which should not touch the leaves and branches of the flower. Spraying is carried out to maintain high level humidity in the greenhouse. Every day the greenhouse is ventilated for 15 minutes to prevent condensation. Epin is added to the spraying solution once a week, and root can be added to the irrigation solution. The greenhouse does not need to be abruptly removed. To adapt the flower, the airing time is increased every day. The greenhouse is completely removed when new leaves appear on the lemon.

Lemon sheds leaves when cancer strikes, viral mosaic... All these diseases are viral in nature. In most cases, in indoor growing diseases cannot be treated, and the plant is completely thrown away in order to prevent infection of other flowers.

Cancer on lemon leaves looks like brown spots. irregular shape, which dry out and crumble inside. With prolonged illness, young lemon leaves develop misshapen and small. The disease cannot be treated, it can be prevented spring spraying flower with fungicides.

Leaves fall if homemade lemon strikes leaf mosaic... On the leaves, it looks like light spots of irregular shape, sometimes it spreads over the plate in the form of strokes. The mosaic does not respond to treatment; the plant is removed in most cases.

Leaves of lemon curl if the irrigation regime is violated. This is overdrying or waterlogging of the soil. In the first case, it is necessary to water the flower with small portions of water, but prevent waterlogging of the soil in the pot. In both cases, the plant is placed under a greenhouse, where it is regularly sprayed. Waterlogging of the soil in the pot leads to root rot. Damaged roots can no longer "drink" water, and therefore the plant suffers from a moisture deficit even in waterlogged soil. In this case, watering is stopped. The lemon is taken out of the pot, while the integrity of the earthen coma cannot be violated, and wrapped in paper. The latter will draw out excess moisture from the soil. Drying in this way is carried out within 3 days, the plant must be shaded. Then the flower is returned to the pot and a greenhouse is organized for it. Watering is not carried out, much attention is paid to spraying.

Lemon leaves dry around the edges if the room temperature is high and humidity is low... Optimal temperature regime for lemon +20. +23 degrees, humidity - not lower than 70%. Otherwise, the plant is sick. Very often, the leaves of a room lemon turn yellow, if it is located close to heating devices in winter. The plant does not like dry air, and even in winter it may suffer from a lack of light. It is illuminated with a fluorescent lamp.

Leaves turn yellow and fall if a lemon infects a spider mite... In this case, on the reverse side of the sheet plate, there will be white bloom, and on the branches - a light, whitish cobweb. The leaves are covered with small spots. How to treat? It is necessary to wash the plant under the shower with warm water, then treat with one of the preparations Fitoverm, Vertimer (three times with an interval of 10 days) or Akarin, Neoron (4 times with an interval of 7-10 days). It is better when the affected flower is isolated from the rest of the collection.

Kira Stoletova

In the process of growing indoor lemon, flower growers often encounter its diseases and pests. Affected citrus tree loses decorative view, ceases to bloom, bear fruit and often dies. Knowing the root causes of lemon disease and treating them at home can help you avoid growing difficulties.

Why does lemon get sick

This exotic plant is affected by diseases and pests in the following cases:

in the process of grafting with a diseased cutting;
improper care: planting in contaminated soil, too frequent or rare watering, insufficient lighting, illiterate pruning or insufficient soil fertilization;
the plant did not have time to get stronger after a previous illness;
infection of healthy domestic specimens with street ones;
the ingress of bacteria, viruses and fungi into the room during ventilation;
making mistakes in the process of breeding, planting and transplanting.

Classification of diseases

Diseases of indoor lemon are divided into 2 groups:

viral;
fungal.

For each disease, a specific treatment regimen is used with the use of special drugs.

Viral

Diseases of indoor lemons caused by viruses lead to massive loss of leaves on the tree. After such sores, the plant becomes completely bare, often dying. It is advisable for beginner flower growers to familiarize themselves with their description and methods of struggle.

Sheet mosaic

Dark and light streaks appear on the leaves of the affected specimen, along outward appearance resembling a mosaic. Over time, they become pale or completely white, lose their shape. Young lemon leaves develop misshapen. With a leaf mosaic, the tree stops growing.

If a lemon gets sick with this disease, it is quarantined, away from healthy specimens. It is impossible to completely get rid of the sheet mosaic, since on this moment there are no drugs for this sore. All you can do is to alleviate the symptoms of its course by providing proper care, and above all, a balanced and regular feeding. Severely affected specimens must be destroyed.

Citrus Cancer

This disease on lemon leaves looks like brown spots. It is also characterized by the appearance of brown spots on the fruit. With a prolonged course of the disease, young lemon leaves are deformed and take on an ugly shape. The fruits shrivel and do not develop. Over time, such a specimen dies.

Treatment of this disease of home lemons is impossible, therefore, in order to prevent it, preventive measures are taken: treatment in the spring with liquid copper fungicides.

Tristeza

The first sign that on indoor plant there was tristeza, - a massive fall of foliage. Further, the bark and shoots die off, which are covered with brown spots. A specimen infected with tristeza cannot be treated and quickly dies.

Most often lemons get sick viral infections subject to illiterate care and during a period of weakened immunity.

Fungal and infectious

Damage to lemons by fungus or infection at home is not uncommon. The reasons are the same as for infection with viral diseases.

Gomoz

The presence of elongated brown spots on the branches and trunk are the first signs of homoz. The bark under such spots quickly dies off and begins to crack. In places of cracks, a sticky, golden-colored substance is formed, which quickly hardens.

The main reasons for the development of home lemon disease are mechanical damage to the bark (fractures, cracks), high humidity indoor air, lack of phosphorus-potassium fertilizers in the soil, excess nitrogen, planting in already infected soil or too deep burial of the trunk.

It is worth treating a sick specimen in the following way: remove the infected bark on the trunk, cut off heavily affected shoots. Treat the stripping and trimming areas with any fungicide of 3% concentration and cover with garden varnish.

The duration of treatment will depend on the degree of damage to the tree. The treatment is carried out until brown spots no longer form.

Anthracnose

Of all diseases, indoor lemons are most often affected by anthracnose. It is determined that this sore appears on the lemon by the leaves: they fall off en masse. But first, the leaf plate turns white or yellow. Flower buds also fall. The fruits are covered with reddish spots.

Control measures include removing dead branches and infected leaves. Three times treatment of the affected specimen with the drug "Fitosporin". Another option is to treat the tree with a 1% solution of Bordeaux mixture.

Scab

They begin to treat the tree by spraying with 1% Bordeaux mixture. All affected parts on the crown are preliminarily removed.

Melseco

When melseco is infected, the branches of the tree at the tips begin to dry out, the leaves crumble en masse. On the cuts, the branches acquire a reddish tint.

The reason is improper care, or rather, lack of light in the winter. There is no point in fighting this disease, since all methods are useless. The only thing that is required of this is regular examination of the tree for symptoms.

Affected specimens are subject to destruction.

Root rot

Often, indoor lemons have leaves that fall off. When 1-2 leaves fall off, you should not worry: this is a natural process. In case of massive leaf fall, it is worth digging up a tree and examining its root system.

If the roots are dark, moldy and soft to the touch, the tree is affected by root rot. All decayed parts are cut off with a sterile knife or pruner. Places of cuts are powdered with crushed charcoal... Next, a transplant is carried out into a new flowerpot.

The transplanted lemon is placed in a well-lit place with protection from scorching sun... Watering is allowed only a week after transplanting to prevent re-rotting of the root system.

Pests

In addition to fungal and viral diseases, there are various pests of indoor lemon.

Shield

Homemade lemon diseases are treated with insecticides or soap solution... For 1 liter of water, 2 tbsp is consumed. l. any liquid soap. All parts that bulge are processed.

After processing, the tree is washed under the shower. After 2-3 days, the treatment procedure is repeated.

Common aphid

With a minor lesion, they are bypassed by cutting off the affected parts along with insects. If the aphid has spread to the whole plant, the crown is treated with garlic infusion (4 peeled and chopped garlic heads are infused in 5 liters of water for a day). Also, insecticides are used to treat infected specimens.

Root aphid

Notice how this pest appears is obtained by the appearance of the plant. It becomes lethargic, stops growing, the leaves become drooping and turn yellow.

Such a tree is removed from the pot, its roots are sprayed with a contact insecticide or a weak garlic infusion, and then transplanted into a new container, after sterilizing the planting soil.

Spider mite

Often a spider mite appears on a lemon. These lemon pests appear in dry conditions and low indoor humidity. They affect young leaves and twigs. The appearance of a small cobweb on a lemon indicates the spread of the mite.

The tick is destroyed at home using a four-fold treatment with 1% boric acid solution. The interval between treatments is 5 days.

If a lemon infects a spider mite, the humidity level in the room is increased and frequent irrigation of the aerial part is carried out.

Preventive measures

To prevent the appearance of diseases and pests on this exotic plant the gardener is required not only to comply with agrotechnical rules, but also to provide competent care. First of all, such measures should be aimed at increasing the immunity of the plant and its resistance to infection.

It is possible to prevent chlorosis (imbalance in the distribution of chlorophyll), to activate the growth and development of a plant, using the following composition in the diet of a house tree:

ammonium nitrate - 15 g;
iron vitriol - 3 g;
boric acid - 5 g;
potassium sulfate - 15 g.

The dry mixture is dissolved in 10 l of water. Lemons are watered with a nutrient solution no more than once every 5 months.

This composition protects indoor citrus fruits from fungal, viral and infectious diseases... They gently stimulate healthy plant development.

Conclusion

Although citrus tree susceptible to many diseases and pests, it is not difficult to prevent their appearance. It is only necessary to observe preventive measures, to show attention and care in relation to the plant, and then it will thank you with a healthy and decorative look.

Such a nasty period in the life of every lover of growing lemons, as a disease of this beautiful plant, is almost inevitable. In this article, we will only talk about those diseases that occurred through no fault of yours. Namely: about infectious and bacterial diseases. There are also viral diseases, they, alas, are incurable, in case of such a disease of your lemon, the plant must be immediately removed from other domestic plants, after which it must be destroyed. Lemon is a plant that is susceptible to many plant diseases, so if you are going to start this plant at home or already have one, advice and knowledge about lemon diseases and its treatment you just need.

Lemon infectious diseases

Gommoz

This lemon disease is infectious. The bark in the lower part of the trunk acquires a brown color, cracks appear, from which a dark sticky liquid begins to flow. The cracks gradually become larger, after which they begin to rot. It is very difficult to treat and completely cure this disease. The place damaged by the disease must be cleaned and smeared with these places. copper sulfate, after which it is necessary to remove the lemon from the soil, thoroughly clean the roots of the plant and transplant to a new place with good soil. Different pathogens can cause this disease, sometimes it is not possible to cure a plant from this disease.

Malseco

This disease causes infectious desiccation and death of the lemon shoots. On the plantations of Georgia, this disease manifests itself suddenly in the spring, and in lemons that grow at home, the disease manifests itself in autumn period until spring. This ailment of lemons causes foliage to fall off, the disease begins to develop from the tips of the branches. Lemon wood, which is already affected by this ailment, acquires a reddish-orange color at the cut points. Petioles from leaves remain in place when they fall. Those who are just starting to grow lemons need to know that if a few leaves in the lower part of the tree or along the edges of the branches have fallen off, and the petioles remain in place, then this may well be the result of a lack of consecration. So no need to panic. There is no definite recipe for treatment for this ailment.

Root rot

By the very name, everything is clear. Home-grown lemons have several varieties of this disease. This disease is almost invisible until the leaves begin to fall off the tree en masse. With such symptoms, the plant must be dug up and the roots must be examined, if there are any affected, they must be cut off with a sharp knife. Also, the roots need to be treated with a rooting stimulant and completely change the soil. The plant must be placed in a greenhouse, or wipe the foliage with a damp cloth as often as possible. In no case should the plant be flooded with water! He needs to provide good lighting.

Lemon viral diseases

Psorosis A or xylopsorosis

This virus is capable of being latent for up to 10 years. When this disease is activated, the bark of the tree begins to be severely affected. On plantations, real professionals check the infection by inoculating sour lime. Amateur gardeners who grow lemons at home, as a rule, cannot determine this disease, they mistake it for Gommoz. There is no cure for this virus.

Tristeza

The bark on the stem of the lemon dies off. There are lemon varieties that are resistant to this disease, on such plants it is simply dormant.

Leaf mosaic

The disease manifests itself in the form of patterns on the foliage. This disease belongs to the viral, for this reason, it does not respond to treatment.

Citrus Cancer

Like any citrus plant, lemon is highly susceptible to cancer. The disease manifests itself as dark brown spots on the fruit of the tree and on the foliage. It is also not subject to treatment.

This, of course, is not the whole list of diseases that your plant can get sick with. You just need to be more attentive to this plant, carry out preventive procedures, once every 3 months you need to spray and spill the plant with a weak solution of potassium permanganate (0.05%). Such measures will help you avoid many diseases.

Lemon pests

In addition to viral and fungal diseases, the enemies of citrus plants growing at home are also considered pests, such as spider mites, false shield insects, scale insects and aphids. Spider mite can be seen with the naked eye, it also leaves white dots on the leaves (especially old ones) on the underside. A tick, if touched, starts to run away quickly. Young leaves begin to curl strongly, after which they are covered with white cobwebs.

Aphids can be seen on the shoots of young lemons. Individuals adults have a yellowish-green color, their length is from 1 to 3 mm, a lemon can become infected with aphids from a bouquet of flowers you brought or from a window. Advice: you do not need to put bouquets of brought flowers next to a growing lemon. It is worth noting that citrus plants strongly attract these pests, for this reason it is better to carry out prophylaxis against these pests than to fight them afterwards.

Prevention is as follows:

1. At least once a month (preferably once a week), it is necessary to thoroughly rinse the leaves and branches under the shower, covering the soil with plastic wrap in advance. Also, together with a shower, at least once a month, you need to process the crown with soapy foam.

2. When buying a new plant, you need to carefully look at it and do not place it next to (i.e. in the same room) with your lemon for 2-3 weeks.

3. It is very good to view every leaf and twig every day, such an examination can take 5 minutes, but this will prevent the development of diseases and pests.

To combat mites or aphids, you can use garlic, tobacco dust, laundry soap... 1 tbsp. a spoonful of tobacco dust is poured with 1 glass of boiled water, infused for 6 days, then 10g is added there. laundry soap. With the resulting infusion, it is necessary to spray the diseased plant 3-4 times, taking a break a week.

You can use garlic: mince 1 head of garlic or grate, then pour 1 glass of hot water and leave in a dark place for 2 days in a sealed container. After the solution is filtered and applied in the same way as tobacco with soap.

Also on the topic

The deputies did not fulfill their pre-election programs Feel free to promise social benefits and reduction of communal services

Fantastic creatures of the Murmansk fisherman conquered the British media

Biography of catherine lyubimova

Online chart and dynamics of the RTS index over the past ten years: what's next?

Orthogonal projection area theorem