Diseases and pests of violets: powdery mildew, late blight, aphids, ticks, worms


Everyone's favorite uzambar violet is distinguished by increased requirements for growing conditions. It is enough to look at the diseases of violets in pictures, and it becomes clear that this capricious flower needs constant attention. In order for the violet to feel good and to bloom all year round, you need to choose the right pot, use loose soil with an optimal set of micro- and macroelements, feed it weekly with liquid fertilizers, provide bright daylight, but at the same time protect it from direct sunburn, so that delicate leaves do not there were burns.

Introduction

And even if all these conditions are met, quite unexpectedly, various diseases of violets or microscopic pests may appear.

To successfully cure plants, you need to learn to distinguish between non-infectious and infectious violet diseases. So, if you notice that the leaves of the violet turn yellow, it makes no sense to stock up on fungicides. A constant lack of moisture, a lack of important nutrients, increased or decreased acidity of the soil, direct sunlight and shading are the main reasons, why do violet leaves turn yellow... Accordingly, the elimination of the listed unfavorable factors will help to improve the condition of the flower.

To successfully cure plants, you need to learn to distinguish between non-infectious and infectious diseases of violets.

Infectious diseases of violets caused by fungi, viruses and bacteria are dangerous because they very quickly infect other plants if they are not eliminated in time. Consider the common diseases of violets and pests that occur most often on these delicate flowers.

Video about plant analysis for violet disease

Infectious diseases of indoor violets

Rosette decay (fusarium)

If the growing conditions are violated (heavy soil, excessive watering, the use of cold water, sudden changes in temperature, too spacious a pot), the Fusarium fungus penetrates into the young roots of the violet, causing rotting of the roots and leaf stalks. With fusarium, you will notice that the leaf petioles have turned brown and began to fall off, and the darkened roots have become easily separated from the soil.

As a prophylaxis for fusarium, water indoor plants every two months with a solution of fundozol. Treat diseased violets with fungicides, removing rotten parts and dried flowers. And of course, try not to break the rules for growing indoor violets.

Powdery mildew

On indoor violets, you can often see white bloom on the stems, leaves and peduncles. Sometimes the leaves seem dusty, but no matter how much you wash them, the whitish spots do not disappear. These signs indicate that your plants are affected by powdery mildew. No matter how hard you try to prevent violet diseases, powdery mildew can appear at any time. Its distribution is facilitated by a lack of lighting (if the violets are standing far from windows), low temperatures with high air humidity, dust on plants and dirt on the shelves where the pots with violets are located, excess nitrogen in the soil with a lack of potassium and phosphorus.

Sometimes the leaves seem dusty, but no matter how much you wash them, the whitish spots do not disappear.

To prevent white bloom from appearing on violets, wipe their leaves with a damp cloth from time to time, keep the flowers clean, ventilate the room. Diseased plants are treated with a single spraying with fundozol or benlate. If the result is not immediately noticeable, you can repeat the spraying after ten days.

Late blight

A fungus penetrates the plant through the root system of the violet or through small wounds, causing the dangerous disease late blight. It leads to decay of the root collar of the flower, and also causes brown spots on the leaves of the violet. Weakened plants are the first to die. Late blight is dangerous because the spores of the fungus persist in the soil, so the diseased violets can only be destroyed and sterilized by the pot. For the prevention of late blight of violets, it is recommended to add superphosphate to the soil and avoid high humidity in the room.

Gray rot

A fluffy brownish-grayish bloom that has arisen on flowers, leaves and petioles, decay of plant tissues are signs of botrytis, a common disease of violets (see the photo in the tab). Gray rot quickly covers the entire plant, causing its death. The botrytis fungus can get into the soil along with plant residues and infect all new plants, its spores can be found in any soil, so it is recommended to freeze the soil in the freezer and spill it with potassium permanganate.

Remove the browned parts of the violet in a timely manner, treat diseased plants with fungicides, and throw away the rotten ones with a lump of earth. For the purpose of prevention, do not allow temperature changes and avoid excessive watering, which the uzambara violet does not like so much (the disease may not occur if you do not flood the flower).

Remove the browned parts of the violet in a timely manner, treat diseased plants with fungicides

Common pests of violets

Scorms

When violets are affected by worms, the leaves are deformed at the bite sites and the appearance of brown or red spots. Females of worms in appearance seem to be covered with lumps of fluff, they can be seen on an earthen coma of violets taken out of the pot. Part of the scale insects is located in the folds and axils of the leaves, on young peduncles. These pests can move with water if the plants are in a common pan.

Treatment of plants with actellik, aktara, phytoverm helps against worms. If violets are damaged by a soil bug, you can get rid of it by shaking off the spoiled soil from the roots and transplanting the flower into fresh soil. It is recommended to additionally spray the roots with Actara. As a prophylactic agent when planting violets in pots, bazudin is added.

Video about mealybug on violets

Aphid

Most often, aphids on violets appear from freshly cut flowers brought into the house. Green insects infect buds, flowers and peduncles, feeding on the juice of violets. As a result, the plants bloom incompletely, and the flower petals are deformed and immediately wither. You can get rid of aphids on violets with the help of a mospilan or actellik.

Most often, aphids on violets appear from freshly cut flowers brought into the house

Mites

Violets are susceptible to attack by several types of ticks, which can be identified by different signs. For example, a red spider mite leaves behind red dots surrounded by cobwebs on the leaves, as a result, the leaves are deformed and dry out. From the spider mite, brown, depressed specks appear on the old outer leaves of the violet. Cyclamen mite mainly affects young leaves growing in the center of the rosette, you may notice round yellow specks on the leaves, the center of the rosette becomes denser, and the bases of the leaves look like they are powdered with gray powder. It is best to fight ticks by treating violets with acarin, phytoverm, actellik.


Types and varieties of violets

Mini saintpaulia - a tiny plant has miniature varieties - the diameter of the rosette is up to 15 cm and the microminiature diameter of the inflorescence is up to 6 cm. The maximum diameter of flowers and the length of mini-saintpaulia leaves are 3 cm. Such violets bloom very abundantly and unusually beautifully.

Duchess (bred in Russia) - blooms profusely in semi-double and double white flowers with blueberry and purple spots.

Carnival - during flowering, the entire plant is covered with lavender flowers. Mesh petals with white piping. The leaves are wavy, dark green in color.

Mix Is not a name, but a mixture of different varieties.

Ampelny - shoots up to 50 cm long with several growth points. They grow better in hanging pots or pots with legs.


How to correctly identify the type of pathogen

It is worth noting that seedlings can wither and lie down not only from pathogenic fungi. The sprout root neck can be damaged by hard grains of sand, insects, heat and other external factors. These problems and diseases require completely different control measures, therefore, if a fungus is suspected, it is necessary to make sure of its presence. To do this, a microscopic analysis should be carried out in a laboratory, where specialists will remove a pure fungal culture from an infected plant and determine its type. Based on the data obtained, it will be possible to select the necessary fungicides and develop an effective pest control strategy. This is the most effective way to help preserve new generations of seedlings.ON THE PICTURE: Determination of the type of pathogen in the laboratory

Unfortunately, diseases that cause seedling lodging progress quite rapidly. It may turn out that by the time the results of laboratory studies are received, there will be simply nothing to save: the seedlings will die. Therefore, it is important to initially follow all the landing rules. Only this approach will protect young plants as much as possible.


Diseases of violets and methods of their treatment

Violets are a popular indoor and outdoor plant. Such a flower is sensitive to various pathogenic microorganisms and pests. Infection with bacteria or fungi leads to the development of pathologies. To prevent negative consequences, you should consider the main diseases of violets, their signs and methods of treatment.

The main reason for the onset of diseases is that the violet is not properly looked after. Such a flower is considered unpretentious, but despite this, it needs certain conditions for full growth. Care is a complex of measures that includes a large number of procedures:

  • regular watering
  • creating optimal lighting
  • use of special potting mixes
  • the right choice of pots
  • timely transplant.

For growing violets, it is recommended to take a special soil mixture. It is designed specifically for flowers due to its lightness. You can make such a substrate yourself by adding a large amount of sand to ordinary garden soil. This mixture is then calcined in an oven to remove harmful microorganisms.

Watering is an integral part of caring for indoor violets. Many do not know how to properly feed the plant with liquid. It is strictly forbidden to pour it on sheets or under the root of a flower. Water is poured into the pan of the pot, and then it impregnates the soil. It is impossible to moisten violets from sprayers.

For irrigation, use only liquid settled at room conditions. The procedure is repeated 1-2 times a week, depending on the season.

Due to improper care, the plant becomes susceptible to infections. This leads to the development of diseases. If untreated, the flower will most likely die.

Pathologies that occur in domestic plants differ in the mechanism of development, manifestations and other features. Sometimes even experienced flower growers cannot determine the disease that provoked the wilting or death of the violet. Therefore, it is recommended that you familiarize yourself with the most common diseases.

The presented group of diseases of indoor violets includes many different pathologies. Powdery mildew is recognized as the most common. It infects the leaves of the plant, which causes them to become covered with white mold. This leads to disruption of photosynthesis, as a result of which the flower does not receive a sufficient amount of nutrients.

  • lack of sunlight
  • high humidity in the room
  • low air temperature
  • a lot of dust on the leaves
  • lack of phosphorus and potassium in the soil
  • abuse of nitrogen fertilizers.

If a white bloom appears on the leaves or stem, the plant should be treated with special solutions. The procedure is carried out once, after which preventive recommendations are followed.

In addition to powdery mildew, fusarium is a common fungal disease. Against the background of such a pathology, the horse system is affected, which leads to decay. The main symptom of such a disease is darkening of the leaves.

Another common disease is late blight. It is accompanied by the penetration of pathogenic fungi into the body of the violet through microscopic cracks. Pathology leads to rotting at the top of the roots. The main symptom is the appearance of brown spots on the leaves.

Rust is accompanied by similar manifestations. This disease is relatively rare in violets. The upper part of the leaf is covered with spots, while orange tubercles form on their lower surface. Affected cuttings disappear.

Infection with such microorganisms is one of the common causes of wilting and death of violets. The risk increases with improper care, since it lowers the plant's immunity. Numerous types of viral infections can provoke the disease. Usually, several types of microorganisms are simultaneously involved in the development of pathology.

The main causes of infection:

  • pest transmission
  • spread of viruses through the air
  • excessive watering
  • infection from another plant
  • unsuitable climatic conditions.

Saintpaulia viral diseases are usually fatal. Such pathologies cannot be treated, since microorganisms penetrate the vessels of the plant and become inaccessible to any drugs.

The main signs of a viral lesion:

  • yellowing of leaves
  • the formation of wrinkles, tubercles on the stems
  • lack of flowering
  • fragility
  • falling off of leaves due to drying out.

Affected cuttings are unable to hold the flag. Because of this, they begin to curl and subsequently dry out. It is impossible to save a violet sick with a virus. It must be disposed of along with the potting soil in which it grew to prevent the spread of infection to healthy flowers.

Such pathologies develop in violets rarely, in comparison with fungal ones. However, there is always a risk of disease, even if the cultivation and care takes place in strict accordance with the established rules. The most common bacterial diseases of violets are presented below.

NameShort description
Vascular bacteriosisIt is provoked by pathogenic microorganisms that penetrate into the large vessels of the sheets. In the affected area, foci of decay are formed. Brown spots appear, which gradually turn black.
Wet rotIt is accompanied by the formation of ulcerative neoplasms, predominantly gray in color. The disease is provoked by enzyme substances that are secreted by bacterial microorganisms. The affected areas become soft and later disintegrate. The pathological focus quickly spreads, involving healthy tissues in the process. Thus, the flower gradually dies.
Bacterial burnThe disease is accompanied by symptoms similar to vascular bacteriosis. The difference is that the forming spots do not have clear boundaries. They can merge, hitting the sheets completely. Most often, young shoots are susceptible to the disease, as well as violets that have recently been transplanted into new land.

In general, bacterial microorganisms are the most common cause of violet leaf diseases.This is because they are more susceptible to airborne, waterborne or insect-borne infections.

Many owners of violets are interested in how to deal with diseases. To eliminate infections, special solutions for local treatment of the plant can be used. It is advisable to use such funds for fungal diseases.

Effective drugs include the following:

  • "Topaz"
  • "Sulfaride"
  • "Trichoderma"
  • "Tiovit Jet"
  • Fundazol.

It is advisable to use such funds for rust, powdery mildew, in the fight against certain types of pests. Treatment should be carried out in strict accordance with the instructions that come with the medicine.

To save the flower from death, it is recommended to remove the damaged areas. This is easiest to do if violet leaves are affected. Sick cuttings are cut, and healthy cuttings are wiped with warm water. In this case, no liquid is allowed to enter the stem.

Replacing the topsoil can help with treatment, especially if violet roots are affected. It is necessary to remove 2-3 cm of soil without removing the flower itself. This must be done with caution. Rotten processes are removed, as this prevents the multiplication of pathogenic microorganisms. Then add the required amount of fresh enriched soil.

During the period of treatment, it is recommended to keep the flower at an elevated temperature and moderate humidity. The plant should be exposed to sunlight and not stand in the shade. Thanks to this, optimal conditions are created for activating the immune processes of the violet, and the likelihood of recovery increases.

Indoor flower diseases can be of non-infectious origin. They are no less dangerous than pathologies provoked by fungi and bacterial microorganisms. They are caused by pests of violets - insects that have a detrimental effect on the plant.

Main typesHarm done
MitesSmall insects prevent adequate nutrition of plant cells. Some species release toxic substances that poison the flower. A fifth and depressions appear on the leaves. They take on an unnatural shape, begin to dry out and fall off.
ThripsThis is a type of harmful midges that can fly from one flower to another. The harm is due to the fact that they eat the leaves. At the same time, insects multiply quickly, so they can spread to all indoor plants. This indicates the need for urgent action.
NematodesThis is a type of parasitic worm that lives in the ground. They reduce the amount of nutrients in the potting mix. At the same time, in the process of vital activity of nematodes, toxins are released that poison the root system. In the later stages, light spots form on the leaves, where later foci of decay are formed. Violets infected with such parasites grow poorly, gradually weaken and die.
MealybugAnother type of harmful insects. A white bloom forms on the affected areas, which can completely cover the leaf. In the future, the roots of the violets begin to rot, which is why the soil emits an unpleasant odor.
PodurThese are small insects also called springtails. They usually start due to high humidity or when the liquid in the pot stagnates. Significant harm is done only in case of mass accumulation of sublevels on the plant. Affected violets become susceptible to various infections and may die.

To prevent infection with parasites, it is recommended to periodically treat the flower with special preparations. It is advisable to use the same method for treatment.

The following means are used:

  • Fitoverm
  • "Mospilan"
  • "Aktillik"
  • "Aktar"
  • "Akartsid".

For preventive purposes, processing is sufficient twice a year. It is usually carried out in spring and autumn. It is not recommended to use antiparasitic agents during the flowering period.

These tips will help prevent the occurrence of diseases and pests. Compliance with these recommendations will ensure full growth, regular flowering and a long period of life.

Basic rules of prevention:

  • sterilization of the soil during plant transplantation
  • use of settled water for irrigation
  • creating enough light for the flower
  • planting in suitable pots
  • periodic soil treatment with antiseptic agents
  • removing rotten or damaged parts of the violet
  • isolation of diseased plants to prevent contact with healthy
  • cleaning leaves from dust and other contaminants
  • compliance with the regime of irrigation and soil replenishment
  • exclusion of sharp temperature fluctuations, rapid changes in humidity.

When buying a new Saintpaulia, it must be kept separate from other plants for 30 days. This will prevent the spread of infection if the purchased flower becomes infected.

Violets are susceptible to various diseases, which is explained by their sensitivity to infections and other adverse factors. Diseases can be caused by various microorganisms and pests, differ in symptoms, severity and possible consequences. The method of treatment is determined based on the characteristics of the pathology and is carried out using special solutions. Active prevention and proper care reduce the risk of disease and premature death of violets.


Late blight of Saintpaulias rosettes

Late blight on Saintpaulia plants appears in the form of brown, drying spots on the leaves. As the disease develops on the violets, such spots spread, the affected tissue undergoes necrosis, and the rosette withers. It is impossible to restore the elasticity of the foliage even after watering.

If the apical part of the rosette is intact, it can be cut off and rooting can be attempted by pretreating with an antifungal agent and removing any tissue affected by the disease. A healthy cut should have a light green tint. For rooting, you can take healthy leaves.

The rest of the outlet is destroyed, all violets adjacent to the diseased specimen are subjected to preventive treatment.


Agrotechnics for growing strawberries

Strawberries are the most beloved and most widespread crop. Strawberries multiply well, take root well, are not very demanding on soil fertility and climate. With good and proper care, you can get a generous strawberry harvest every season.

Strawberries, or wild strawberries - a plant up to 30 cm high. Propagate strawberries by rooting a mustache. For good growth and reproduction of strawberries, an air temperature of 8 degrees is sufficient. At lower temperatures, strawberry growth is inhibited. The plants take root very well within 4 weeks. The best time to plant strawberry seedlings in central Russia is May. But strawberries can also be planted from July to September with good watering.

Garden strawberry (Strawberry)

Strawberries with green leaves overwinter. With the onset of spring, new young leaves and roots begin to develop in the bushes.

Strawberries are propagated by whiskers and leaf rosettes. It is better to purchase planting material from the nursery or from experienced collectors. When buying seedlings, choose the one that has 3-5 leaves, a whole heart and white juicy roots.

Garden strawberry (Strawberry)

To get seedlings on your own plot, you need to weed well and loosen the aisles deeper, straighten the overgrown whiskers and paddle the earth on them, water them and feed them with liquid fertilizers - 20 grams of urea per bucket of water. In very dry weather, young outlets should be watered frequently. The best seedlings will come out on the first between the whiskers, closer to the bush. They must be left, the rest of the young sockets are cut off.

The formation of young rosettes by growing the whiskers greatly weakens the mother bush. Therefore, you can use another breeding method. The very first, well-developed young rosettes are selected from healthy strawberry bushes and planted in a special nursery, in which the soil should be well filled with organic matter. Young outlets must be shaded and constantly monitored for soil moisture. The seedlings obtained in this way can be planted on a permanent bed in July.

Garden strawberry (Strawberry)

To obtain rich harvests of strawberries and large berries, it is necessary to prepare a bed for planting in advance. For a month and a half, a site for planting strawberries is dug to the depth of a bayonet and organic matter is added during digging - 6 kg per square and complete mineral fertilizers - 45 g of superphosphate and potassium salt.

It is recommended to plant strawberries in an ordinary way and in a strip pattern. With the ordinary method, the distance between the outlets should be at least 30 cm, and in a row - 40 cm.When tape planting, the distance between the ribbons is 70 cm, between the plants 15 cm.

Garden strawberry (Strawberry)

Before planting, the roots of strawberry seedlings are dipped in a clay mash, which improves the survival rate of strawberries. When lowering into the hole, the roots are carefully straightened and pressed tightly to the ground, slightly raising the plant. With proper planting, the heart must be at ground level. After planting, the strawberries must be watered abundantly.

Planted strawberry seedlings must be mulched with cut grass, straw or humus. Also, a black film can be used from a mulching material, which will not allow moisture to evaporate. In the film for the sockets, holes are made with a length of 10 cm.

Garden strawberry (Strawberry)

After planting strawberry seedlings, it is very important to maintain sufficient soil moisture and it is necessary to feed the strawberries with mineral fertilizer - urea and potassium chloride.

The greatest harm to strawberry plantations is caused by the raspberry weevil and mite, and of the diseases, gray rot most often affects strawberries.

In order to prevent diseases, strawberries are treated with Bordeaux liquid, and the affected flowers are destroyed.


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