Regular and thorough examination of orchids allows you to control their condition, timely identify the problems associated with the invasion of pests and the development of diseases. Much of the status of plants can tell the leaves. In healthy orchids, the leaves have a dense structure and hold firmly on the stems. The appearance of strange spots or white plates on the leaves is an alarm signal requiring immediate measures to provide urgent exotype treatment.
Causes of appearance
The formation of a white plaque on orchid – a symptom indicating fungal or parasitic lesion of the plant. In the first case, the cause of the appearance of a white plaque on the leaves is a disease that is called torment dew. In the second case, the occurrence of white plaque is due to the activity of the pest, which is called the torment. If you found similar symptoms, the plant is subject to immediate insulation and requires competent treatment.
If the orchid was covered with a powdered flask, resembling talc or flour, this indicates fungal disease – mildewing dew.
As the disease develops, the lard is purchased a grayish tint and applies to all parts of the plant. With the launched shapes, the flare is formed not only on the leaves, but also on colors, stems, color-point arrows, buds and roots.
In the event that the plant was attacked by a tormentary cherler, it begins to be covered with a sticky whims, similar to a thin cotton layer. Very often, traces of sticky and viscous substance are formed on the trunk and other parts of the orchid – Paddy, which is the product of the vital pest. Leaving after himself this sweet, sticky secret on stems, flowers and leaves, the pest contributes to the damage of plants with fungal diseases. To a greater degree, the problem is aggravated by the fact that the torment Cherberry, feeding the booms of orchid, carries it to a slow, but faithful death.
Other famous pests that are able to lead to the formation of a white plaque on orchid – the wave and web tick. TLL, like Cherver, produces a viscous whip. The product of the tick product, in turn, is a sticky web, which visually similar to translucent film. Both parasites are powered by plant juices, and their livelihoods create excellent conditions for breeding pathogens and fungi.
The main cause of the formation of white plated rabbing is considered incorrect care and lack of control over the state of the plant. Due to non-compliance with the rules of departure, immunity begins to decline, ensuring their resistance to the development of diseases and pest attacks. Orchids with reduced immunity are very quickly affected by fungus or exposed to the invasion of parasites, which in the absence of full-fledged treatment leads to the death of exotic.
Among the main reasons, as a result of which the fungal raid of fungal or parasitic origin appears on orchids, crop rates are distinguished such as:
- overabundance of nitrogen in the substrate caused by violation of the feeding mode;
- inappropriate level of humidity;
- violation of the regime of polishes, the fear of the substrate;
- Using a low-quality or infected substrate.
Another reason that increases the risk of damage to the orchid fungus or pests is the lack of proper care. So, leaving in a pot of dry leaves, flashing color-colored arrows or flowers, an inexperienced crop can not even guess that they are a favorite habitat not only pathogenic bacteria, but also many famous pests. For this reason, in the pots where the orchids grow, there should always be pure.
Another reason, as a result of which orchids are vulnerable to the formation of white plaque, experimental rabids call the genetic predisposition of hybrids due to the characteristics of the variety.
Considering this factor, knowledgeable flower products do not recommend newcomers to begin breeding orchids from capricious hybrids susceptible to diseases and pest attack.
How does it harm white?
White raid due to lesion by flourous dew flower, is a consequence of one of the symptoms of the disease. In fact, this flight is a thin layer of mycelium – parasitic fungus. After aging the argument on this layer, liquid drops are formed, similar to dew drops (from where the name of the disease went).
Actively multiplying, fungi begins to spread very quickly throughout the plant, penetrating into his fabric. As it reproduces and distribution, the white mushroom is becoming more dense and darker that over time leads to drying and flower death.
In the case when white bloom has a parasitic origin, there is a serious threat of infection of orchid with a sage fungus, otherwise called a mobile. The ideal environment for reproducing the dispute of this mold fungus is the Pad – the product of the vital activity of torment Chervests and Tlim. This adhesive substance creates excellent conditions for active breeding of colonies of a sage fungus, which clogs the pores in the tissues of the plant, thereby disrupting the processes of photosynthesis. As the parasitic colonies arranged, the orchid begins to gradually die. First, the leaves dry and die on the exotion, and then the plant is completely.
How to deal with him?
The choice of methods of combating a white hoist on orchid should be based on the root cause of its appearance. If the plant suffered from mildew, it is necessary to conduct a thorough treatment Antibacterial and antifungal drugs. These same means (fungicides) are used to destroy a sage fungus.
If the orchid was attacked by pests, it is required to use Appropriate preparations (insecticides), which allow you to get rid of parasites. At the time of treatment, the orchid suffered from mildew or the invasion of pests is necessary be sure to isolate from healthy plants. Even under the condition of full and high-quality treatment, the infected exot will remain a source of danger for other colors.
Next with an isolated plant you need to do the following:
- Thoroughly inspect all parts of orchids, including buds, arrows and roots;
- Carefully remove all the affected parts of the plant;
- Treat sections of chopped wood coal.
Begin to treat orchid affected by mildew or parasites, without prior removal of affected parts, it is impossible. Infected or damaged leaves, buds, roots or shooters of the color seeds even with very high-quality treatment will remain a source of danger. All remote parts of the plant after cutting must be destroyed.
You can fight a white hoist on orchids as chemicals and folk methods. The best results provide an integrated approach that combines several treatment options.
Destruction of white coat chemical Provides the use of such drugs as:
- 96% ethyl alcohol;
- hydrogen peroxide;
- mangartanous potassium (weakly pink solution);
These drugs have a powerful antibacterial effect, which makes it possible to effectively apply them in the fight against fungus and white raid on the leaves. To do this, in any of the presented funds, we smell a cotton wand or disk, after which the injured plant is carefully treated. Doing this procedure should be done regularly to prevent the recurrence of the disease or repeated invasion of parasites. After processing, the orchid is left half an hour, and then washed with its water temperature.
During the treatment of the plant It is important not to forget about the soil substrate to replace the new. It is necessary to trace that the new substrate does not have signs of pest infection. In order to prevent it, it should be treated with a pale-pink solution of manganese.
To combat fungus, which is the causative agent of mildew, should be used by special fungicidal preparations, such as:
- Bordeaux mix.
Use these drugs is necessary in exact accordance with the instructions. When processing plants, all precautions should be observed and operate in protective gloves.
To destroy pests that caused the formation of white plaque on orchid, it is required to apply special insecticidal drugs. The most effective includes the following:
Experienced flowers also recommend process victims with special solutions prepared from 150 grams of household soap and 5 grams of copper sulphate. Ingredients need to be dissolved in a bucket of water and spend thorough treatment of plants.
Fighting with a white rode on orchids can be both folk methods that contribute to a faster elimination of the problem. One of them involves the processing of infected plants with alkaline and acid solutions – for example, soda or citric acid solutions. For the preparation of the solution, it is necessary to dilute in one liter of water 10 g of any of the funds.
The resulting solution needs to be treated all parts of the plant having traces of defeat. After processing, orchid should be left in a warm room, protecting against drafts and temperature drops.
Good results in the fight against white raid gives plant treatment ordinary beer. This procedure allows you to neutralize parasites, slow down the development of fungus, and at the same time – to give the leaves of an attractive glossy radiance.
Resorting to folk methods, it should be remembered that you cannot cure orchid to cure orchid. These methods are auxiliary, so the main treatment of fungicides or insecticides they do not replace.
To prevent the infection of orchids with mildewing dew or by parasite defeat, it is important to take care of its immunite. It is able to provide competent care. It provides for compliance with the regime of polishes and feeding, ensuring the necessary humidity of air and illumination.
The supercooling of orchids is also able to cause a decrease in its immunity. That is why it is very important to maintain a stable temperature in the room where the exots grow, protect them from cold and drafts.
However, even with the highest care, there is a risk of random infection of orchids with fungus or parasites. This often happens when buying a poor-quality substrate, as well as when purchasing new plants. Considering this, the substrate should be purchased only in proven stores, and new orchids for some time to keep separately from the rest. If during the quarantine on exotic, suspicious plaque or stains will not arise, it can be moved to the rest of the colors.