Common cucumber diseases and their treatment methods: root rot, viral infection and twisting of fruits

Vegetable, which is one of the most common in the world, is prone to a large number of different diseases, which you definitely have to fight to avoid losing the entire crop. All these diseases can destroy cucumbers at any stage of development. How to identify the disease and prevent the death of vegetables, let's talk in this article.

Diseases of cucumbers at the moment there are a large number. Consider them in more detail and analyze the symptoms.

Next, we will dwell on several more common diseases.

Cucumber mosaic is a viral disease, and it is the most resistant to a variety of treatment measures. To destroy the virus, you need to exert maximum efforts, otherwise success simply will not be achieved.

This virus is able to live long in the soil, on garden tools and in plant residues, for example, in borage. Mosaic can even hit seed, while disease activity can persist for 3 years.

The disease can occur for several reasons:

1. too high air temperature (above +25 degrees);
2. sudden changes in temperature.

This disease is transmitted through:

• seed material;
• weeds;
• priming;
• inventory;
• pests.

The disease manifests itself most often when the plants are still young. A leaf plate of cucumbers is affected, on it appear yellow or white spots, which are becoming more and more. Gradually, cucumber leaves completely lose their natural color, only the streaks remain green.

Now let's talk about the methods of treatment of this disease. In the first stage, divide diseased plants and healthy ones to avoid the spread of infection. All affected foliage is removed, cucumbers are treated with “Aktar” or another preparation with a similar effect. All tools with which to work with diseased plants are disinfected in a manganese solution (saturated).

You can slow down the progression of the disease, if you spray cucumbers:

• weak infusion of garlic;
• solution of milk and iodine;
• decoction of onion peels.

Many gardeners are faced with such a problem as hooking. The reasons why there are curves of fruit, a few.

1. Together cultivated varieties pollinated by bees and parthenocarpic. If different varieties grow in your greenhouse, you will have to block access to pollinating insects.For example, when you air the greenhouse, cover cucumbers with gauze.
2. Irregularities in the mode of watering. If the soil is too dry, the cucumbers are twisted, become small, their shape is deformed.
3. Heavy, infertile soil. In the process of sowing the land need to loosen, make peat, humus.
4. Violations when making dressings. If you do not comply with the number of dressings, you can encounter hooking. In particular, an excess of nitrogen leads to such consequences.
5. Untimely harvesting of fruits. Ideally, cucumbers should be collected every 24 hours. If the fruits overripe, then the new ones are formed with difficulty.
6. Little light. Cucumbers can be hooked if they do not have enough light. If the bushes grow strongly, it will be difficult for the light to penetrate to the new ovaries, as a result - the hookedness of the fruits.
7. Coldly. If the culture is not warm enough, the fruits grow small and hooked. This is a kind of reaction to the cold.

Cucumber disease, such as root rot, occurs quite often, there is nothing surprising in this. And the reasons for its appearance may be different, and not just overflow. In this list you can include:

1. high humidity;
2. soil acidity.

The symptoms of the disease are as follows:

1. root collar brown;
2. leaves turn yellow and fade;
3. drying of the ovary;
4. underdeveloped fruit;
5. gradual withering and death of the fruit.

The disease progresses rapidly, especially if the air temperature is above 27 degrees or below 15-16. Seedlings symptoms most often do not appear.

Methods for preventing disease:

1. disinfection and heating of seed material;
2. disinfection of containers for future seedlings;
3. watering seedlings with warm water;
4. fertilizer application without chlorine;
5. timely removal of diseased plants.

This is certainly not a complete list of methods, but only the main and most well-known. In addition, if you find the first signs of root rot in your plot, immediately try to rejuvenate the culture: put the stems on the ground so that the new roots will successfully form.

As the formation of new roots pour soil on the stems.

The causes of the onset of disease are actually many. This may occur due to the presence of one factor, and in some cases a complex of causes having to the onset of symptoms develops at once.

1. Violation of the requirements of agrotechnology in the process of growing culture.
2. Plants have little sunlight.
3. Non-compliance with the rules of crop rotation. It happens that the gardener has little experience, and he plants cucumbers in the same place throughout the year.
4. Soil depletion. In this case, the problem can be solved only by the timely introduction of dressings.
5. Violation of the mode of ventilation. Do not forget that the greenhouse needs to be ventilated, but at the same time do not allow a strong draft to occur.
6. Late discovered diseased seedlings. This happens if the bushes are not inspected regularly.
7. Pollution in the greenhouse. Before the start of each planting season in the greenhouse, it is necessary to carry out a general cleaning - remove the fallen leaves from the harvest of the previous year, clean the walls, carry out fumigation for disinfection.
8. High humidity. This indicator should be controlled, not allowing a significant increase in humidity. Otherwise, the fruits and root system will suffer.

Nutrient deficiencies have the most negative effect on the health of the cucumber culture. With such a deficiency, cucumbers are affected by fungal diseases, lose their taste, grow slowly, deform.

For example, if the soil is very low in potassium, then the fruits will be compensated for by lack of shoots and foliage, and they will turn yellow, fall off. The shape of the fruit will be pear-shaped or in the form of a hook.

If there is a shortage of nitrogen fertilizers, the leaves turn pale green, then yellow.The most effective way to remedy the situation is to prepare a solution of urea and feed them plants.

When cucumbers have little phosphorus, the foliage changes to purple. This is the brightest and most visible sign of a problem. Fruits grow small in size and lose taste.

These symptoms are similar to the lack of sulfur, which for cucumbers is fraught with disease and the appearance of rot. The lack of boron is characterized by a decrease in the nutritional value of the culture. The lack of iron is especially noticeable by the foliage, not visible by the fruits.

In order for cucumbers to have a marketable appearance and excellent taste, it is necessary to provide cultures with vitamins and microelements in time and in full. This is especially true of phosphorus, nitrogen and potassium.

Pests of cucumbers can also bring a lot of problems to the gardener. If there is a feeling that someone is eating cucumbers, you need to carefully examine the plants. Among the most common parasites include:

• gall nematode;
• spider mite;
• aphid;
• greenhouse whitefly.

Gall nematode usually affects cucumbers that are grown in greenhouse conditions or in a greenhouse. It lays the larvae in the roots of cucumbers, and its toxic substances provokes the development of growths in the culture.

In such a situation, the affected soil will have to be removed (approximately 50 cm) and replaced with a healthy one. To process the soil in the greenhouse you need to steam, and in the winter to thoroughly freeze the soil.

Spider mite drinks from the plant all the juices. It may seem that the pest cucumbers just eats. The leaves twist, lose their color and die.

In this case, you can solve the problem by spraying. It is possible to process a bush, using the special preparations bought in the garden center or shop for summer residents. If this is not possible, use a soap solution.

As for aphids, the peak of its appearance is July and August. Because of its presence, leaves curl, ovaries and flowers fall down. Fighting aphids and treating diseased plants can be quite successful. Excellent folk remedies - a solution of wood ash and laundry soap, garlic brew.

If the culture was struck by the greenhouse whitefly, a black border appears at the edges of the leaves, then the foliage turns black completely. It is worth noting that the development of this disease is provoked by the presence of a large number of weeds, so you need to get rid of them in the first place - this is the key to successful treatment

Also eats cucumber cucumber fruits. Its larvae are able to gnaw the moves in the roots and stalks of seedlings. As a result, the entire crop may die.

Eats cucumbers and May beetle, even accidentally caught in the greenhouse. The pest causes significant damage to crops, destroys the crop with amazing speed.

Improper care and violation of agrotechnical rules are important reasons why a crop can get sick, therefore, when growing cucumbers, special attention should be paid to proper care. Consider some rules.

1. If there are holes on the leaves, it speaks of sunburn. To avoid this, you need to carefully inspect the greenhouse and immediately remove the condensate that has accumulated in it.
2. It is not necessary to allow sprouting of seedlings.
3. Do not completely abandon plant protection products. If you use them in moderation, they will not bring you any harm.
4. Do not plant cucumbers over measure. If the planting is thick, the fruits will be bitter and twisted.
5. It is necessary to form plants, thin out bushes, do nip.

Any cucumber disease requires proper diagnosis. First you need to understand what caused the disease:

• improper care;
• viruses;
• fungi;
• bacteria.

If we are talking about violations committed in the process of care, the following control measures should be used:

• adjust watering;
• maintain optimum air temperature;
• feed 1 time in 7 days;
• to adjust the ventilation of the greenhouse.

In the case of the appearance of viral diseases, proceed as follows:

1. infected plants are removed along with the root, the soil is shed with boiling water;
2. weeds are completely destroyed within a radius of 10-15 meters from cucumbers.

Experts say that viral diseases of a culture are treated with great difficulty. Easier to completely get rid of the harvest.

Without the use of preventive measures to protect the culture from disease in full will not work.

1. Processing greenhouses after harvest. In particular, you need to disinfect the greenhouse with checkers, eliminate the remains of plants, weeds and treat the entire structure with disinfectants.
2. Seed dressing. Seeds are very often a source of infection. To avoid this, experts recommend dressing them with biologics (for example, "Gamair").
3. The presence of a strong and healthy seedlings. In order to get it, you need to use only high-quality soil (if used purchased) or to soil the soil with hydrogen peroxide or other drugs before planting seeds. Also, do not give the seedlings stretch, observe the deadlines.
4. The increase in daylight. If the day is overcast, you can use a fluorescent lamp, fitolampu for indoor plants. Observance of the light regime is one of the main requirements for the successful cultivation of seedlings.
5. Choosing the right neighborhood. Cucumbers grow well next to beets, corn, garlic and onions. The neighborhood with corn gives cucumbers a sweetish aftertaste.
6. Regular watering and weed control.
7. Timely introduction of fertilizing.
8. Watering with warm water.

On what diseases and pests have cucumbers and how to deal with them, see the next video.