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For most growers, the main thing is the exact definition of the disease. However, in most cases this is difficult. To establish the cause of the disease, it is important to collect as many symptoms of the observed damage, changes in growth and development as possible. First of all, you need to decide on the conditions in which your flowers were. For example, most diseases of fungal and bacterial origin develop in conditions of high humidity and high temperatures. However, this does not mean that if the plant has not been sprayed and kept cool, it cannot have diseases. They can be, but they will spread much more slowly than in greenhouse conditions. In other words, the disease can pass in a chronic protracted form, or it can cause the death of a plant in just a few days.
The sooty fungus settles on the sticky secretions of pests.
Yucca got sick because her leaves were "roasted" over the hot air of the radiator.
Rose got sick from excessive watering and lack of light.
Disorders of care are often mistaken for plant diseases. If the flowers suffer from drying out of the earth or dry air, this is manifested by drying out of the tips of the leaves, blanching and loss of turgor, and may be accompanied by the appearance of a mite that causes twisting and deformation of the leaves, the formation of characteristic puncture spots. Plants affected by a lack of moisture in the air and soil rarely suffer from diseases (bacterial and fungal), but due to weakening they are at risk. But the plants affected by the overflow, being in conditions of high humidity (in a warm or cool room), sprayed several times a day, planted in non-disinfected soil, as well as exposed under the open sky, growing in a large group,or in poorly ventilated rooms - the former will be infected with fungal or bacterial diseases.
There are diseases that are very easily identified by their characteristic symptoms - for example, powdery mildew, gray rot, phylosticosis - see houseplant diseases. Other diseases can be identified by the presence of spores, sometimes large and easily visible with the naked eye, and sometimes (especially in the initial stage), visible only through a magnifying glass. In general, bacteria can be viewed only with a high magnification of the microscope in laboratory conditions. Most often, it is very difficult to recognize the pathogen by the nature of the spots, for example, bacterioses cause various types of spotting, necrosis and wilting (damage to the vascular system of the plant), but they can be distinguished from verticillary or fusarium wilting only by cutting the stem at the site of the lesion.
Bacteriosis develops from systematic dampness in the pot.
Watering without drying leads to the appearance of such spots.
In peperomias from too frequent watering, dropsy of leaves appears - spots of a non-infectious nature.
Often weakened by a lack of light or other violations of the conditions of detention (especially after being kept in questionable shops), plants suffer not one, but several ailments at once. For example, mite and bacterial spotting. At the same time, when an intensified fight against a tick by spraying begins, not only bacteriosis begins to develop on the plant, but at the same time gray rot (fungal disease). Ultimately, the plant dies because it is not able to fight several misfortunes at once, especially if it has not yet acclimatized to the new conditions. Therefore, one should not go to extremes and drastically change the conditions of detention. And just remember that if there is high humidity around the plant, all possible diseases can threaten it. After all, pathogens are carried with the wind, spray of water,easily carried with tools, hands and feet of insects, as well as with water from natural sources. A microscopic crack on the skin of a plant is enough for bacteria to penetrate.
When a plant can be seriously affected by a fungal or bacterial infection:
- If the plant is planted in non-disinfected soil;
- If the plant was bought in a store;
- If the plant was (is) in conditions of high humidity;
- If the plant is (stood) in a crowded group, in an unventilated room;
- If you examined the entire plant with a magnifying glass and did not find a visible pest (if you do not have a magnifying glass, you may not even try to identify the damage);
- If the plant is watered with water from natural sources (rain, pond, river), and also stands in the open air.
- If the plant receives abundant (frequent) watering and the soil inside the pot is waterlogged.
- If the plant has not been transplanted for a long time or planted in unsuitable soil (in case of malnutrition, similar symptoms can be observed - spotting, chlorosis, stunted growth).
- Lack of light aggravates the development of all diseases!
How to cure a houseplant
As for the treatment, very often it is enough to remove the stained leaves, improve the living conditions and the disease passes. If this does not happen, the disease is too severe, then you have to resort to the use of fungicides. Gardening stores offer us a lot of fungicides, which can be divided into two groups (conditionally):
- safe, i.e. you can wash fruits, berries, vegetables and eat: Fitosporin, Agat-25K, Alirin-B, Gamair, Glyokladin, Previkur Energy, Trichodermin, Trichophyte, Fitolavin, etc.
- chemical, after spraying, you cannot eat fruits and leaves for at least 30 days: Bordeaux liquid, Bravo, Vitaros, Vectra, Discor, Quadris, Maxim, Oksikhom, Ordan, Hom, Copper oxychloride, Rayok, Skor, Topaz, Fundazol, etc.
From the point of view of indoor flowers, it seems unimportant how toxic the fungicide is, because we can eat a small number of plants from the windowsill, for example, laurel, citrus fruits, pot greens, balcony peppers, tomatoes and cucumbers. But all these drugs leave toxic fumes after spraying, so do not forget about protective measures (spraying in a respirator and airing). At the same time, safe biofungicides are not poisons, and therefore are rather weak in advanced cases of diseases of flowers and plants.
But do not forget that in the first place is the correct agricultural technique, in the second is the treatment with fungicides
Bacteriosis and viruses