Eggplants in a greenhouse: planting and care
Growing eggplant is not an easy task for both beginners and experienced gardeners. In this article, you will learn how to properly grow this vegetable in greenhouse conditions, how to avoid possible problems and get an excellent harvest.
Greenhouse Requirements
Remarkable in all respects, the option for a greenhouse for growing eggplants is a polycarbonate construction. It can protect from low temperatures, provide vegetables with a sufficient level of sunlight, and you can easily design it yourself. In addition, the material has another advantage - it warms up well in the sun, which helps to reduce heating costs.
For additional insulation, sheathing with an anti-condensate film can be used.
There is no need to build a tall greenhouse for growing eggplants, since these vegetables do not differ in large bushes. The best option would be a greenhouse with a height of 1.8-2.5 m.
If you live in the northern regions, then it is recommended to install the greenhouse on a foundation that goes deep into the ground by about 20 cm. The base of the greenhouse can be either wooden or made of a metal profile. Ventilation vents are necessary in the greenhouse, which serve for ventilation and temperature control.
Disembarkation dates
Young eggplants are planted in the ground only when the night frosts stop.This period begins approximately at the end of May-beginning of June, if we consider the middle lane. When growing vegetables in a greenhouse, this all happens earlier due to the presence of a shelter that negates the possibility of freezing young shoots at too low a temperature, and the sun's rays can warm up the walls of the greenhouse, creating optimal conditions for the development of young plants. To plan the dates for planting vegetables, it is necessary to take into account the climate of the area and the characteristics of a particular greenhouse.
On the scale of industrial crop production, seedlings are planted from the 15th of February to the first decade of March. It is usually at least 65 days before the seedlings are transplanted into the ground, therefore, the transfer of plants should be scheduled in early May. Under certain conditions, a shift in the timing of sowing and transplanting by 7-10 days is allowed.
If there is heating in the greenhouses, then it is possible to plant eggplants in the second half of January. In this case, the transplant dates are shifted from the beginning of May to the first days of April. However, it should be borne in mind that this growing technology is quite expensive, so before starting it, profitability should be calculated.
In the Moscow region and the Krasnodar Territory, eggplant seedlings are planted in greenhouses until May 10-15. In Siberia, in the Urals, this is done a little later - in the second half of May and sometimes even in early June.
How to plant?
During planting, seedlings are not allowed to be too close to each other. Such a planting will contribute to unpleasant consequences: a decrease in yield and an increased risk of infection with all kinds of fungal diseases.On a square meter of beds, it will be correct to plant 5 plants when grown in a heated greenhouse and 3 plants in the absence of heating. If the bed is formed in rows, then it is necessary to adhere to these intervals:
- between rows - 60-65 cm;
- holes at a distance of 30-35 cm.
Seedlings are placed 15-18 cm deep from the soil surface. For the adaptation of young plants, it is necessary to observe the correct temperature regime. An indicator of 18-20 ° is considered optimal.
Varieties with wide bushes would be more appropriate to plant, placing plants in a checkerboard pattern with a distance between holes of 60 cm. Low-growing varieties are usually placed in two rows with an interval between rows of 65 cm and 40-45 cm between the plants themselves in a row.
How to care?
If you properly care for these plants, use the correct watering and feeding scheme, then not the most experienced gardener will be able to grow eggplants.
The main care for eggplants is watering, fertilizing, observing optimal conditions, preventing and controlling diseases and pests.
Eggplant is a southern plant. Therefore, it is extremely important to maintain the temperature regime. If the air and soil temperatures are too low, the bushes may die. Optimum will be 20-25 ° when growing seedlings and 17-20 ° in the future. At night, a decrease to 10-12 ° is permissible.
For the correct development of young eggplants in a polycarbonate greenhouse, it is necessary to provide 12-hour daylight hours. In order to ensure this condition, the installation of fluorescent lamps will help. Artificial lighting should be evenly distributed throughout all seedling containers.
Excessively abundant watering can lead to the death of plants, so eggplants should be watered sparingly.Watering should be done every 3-5 days and every other day in hot weather. It is necessary to water the soil itself, and not the sprouts.
The agricultural technology of this vegetable crop necessarily includes the use of fertilizers and dressings at all stages of growth. For the first time, top dressing is necessary when the first shoots appear. It is necessary to competently approach the choice of fertilizer, since the further development of this vegetable crop largely depends on it.
Many people prefer to use liquid solutions for these purposes, for example, potassium nitrate (used at the rate of 3 g of fertilizer per 1 liter of water). Also a good alternative is an ash solution (prepared at the rate of 200 g of ash per 7 liters of water). A good fertilizer is also Kemira Lux (prepared in proportions of 2 g of the product per 1 liter of water). The most important thing when applying top dressing is not to get on the plants themselves, so as not to burn them.
The second time fertilizer should be applied after 3-4 weeks. Such means as "Biogumus", "Healthy Garden", "Bioton" have proven themselves well. They do an excellent job of their task and at the same time are completely safe for vegetable crops. If eggplants do not grow well, then the following means can be used: Agricola Forte, Signor, Ideal. The latter is used to regulate growth.
Eggplants have bisexual flowers, which means they self-pollinate. But for the greatest efficiency of the process, you can walk between the beds in the morning and move each plant slightly. For the same purpose, you can use a brush.
To increase the yield of eggplant, pinching is used. There are 3 varieties of this procedure - in one, two or three stems.And the choice of method depends primarily on the characteristics of the cultivated variety. Pasynkovanie is to remove excess shoots that take nutrients from the bush and thus prevent the good development of other fruits.
Pruning is carried out half a month after planting seedlings in the greenhouse. The pruning process removes ovaries growing below the main branch. When 4-5 shoots are already formed, it is necessary to pinch the top of the bush. You can also focus on the height of the plant - it should be 25-30 cm. Eggplants of high grades may need to be tied up, but their undersized counterparts do not require this, since they already have a dense and even stem that can hold the plant.
The garter can be done in several ways.
- To the pegs. Many gardeners use this particular method, attaching a massive peg equal to the height of the formed plant to each bush.
- To the wallpaper. This is the easiest option.
- to the stretched wire. The fastest way. To secure the bushes, a wire is pulled over a row, a rope is fixed to it with a sliding knot, which goes to the bottom of the stem. If another shoot begins to form at the bush, then it must also be tied up.
To maintain the necessary soil moisture, the procedure for mulching the beds has proven itself well. It, unlike loosening, does not damage the delicate roots of this vegetable crop.
Possible difficulties
Eggplant is a whimsical and capricious plant, and when growing it, gardeners will face a number of difficulties: it is prone to many diseases, fruits are poorly formed and developed, insect pests are likely to attack, and much more.One of them can be folding leaves. Depending on various factors, this can happen both throughout the day, and only at specific hours. This problem may be caused by:
- too dry or, conversely, too wet soil;
- the level of illumination missing to the norm;
- insufficient enrichment of the soil with minerals;
- excessive salinity of the soil;
- pest action.
If the leaves of eggplant bushes grown in a greenhouse are curled, then pay attention to the light regime. This vegetable crop is demanding to observe the change of light during the day and night. During the day, use a fairly bright but not direct light source. Direct rays can cause damage to the plant, so it is better to use soft, diffused light. Since this vegetable crop is a heat-loving plant, do not forget to monitor the temperature regime. Try to keep the temperature inside the greenhouse at least 25 degrees.
Excessive salinization of the soil can occur due to its insufficient moisture content. Watering should be carried out 2 times a week and 4 times in hot weather. Due to excessive salinity of the soil, the leaves of this vegetable crop can curl up into a tube during the daytime and return to normal some time after watering. This is because due to the evaporation of water, the concentration of salts and potassium in the soil increases. Another reason for this phenomenon may be the abuse of fertilizers, especially those containing salts of phosphorus, nitrogen and potassium.
Washing the soil with a sufficient volume of water can help solve this problem.Like excess, lack of minerals can lead to leaf curl. The vital minerals for this plant are nitrogen, potassium, phosphorus and magnesium. With a deficiency of phosphorus, the leaves go up, clinging to the stem. With an insufficient amount of potassium, eggplant leaves take on the shape of a boat, and a brownish border forms from the edges.
If the plant does not receive the right amount of nitrogen, then the leaves become lighter in color. Phosphorus deficiency affects not only the foliage, but also the process of fruit ripening. Early signs of potassium deficiency are wrinkling of young leaves and brown spots on old ones, which can later lead to complete loss of leaves. In this case, the fruits will not be able to ripen evenly.
Another cause of damage to the leaves may be the defeat of the spider mite. These insects suck the sap from the plant, causing it to dry out. To identify this pest, pay attention to the leaves. You can easily see the little cobwebs and the brown insects that live in them.
Preventive measures against ticks include regular watering and spraying eggplants with plain water. But if the pests nevertheless appeared, then all kinds of chemicals or folk remedies are already coming into play. Of the latter, a decoction of potato tops, tobacco waste, and garlic tincture have proven themselves well. If you do nothing and let everything take its course, then the plant may wither, and then die altogether due to a lack of vital substances.
Sometimes it happens that the nightshade flowers fall off. This is often due to a lack of boron. However, this problem is easily solved by spraying the plants with a boron solution.It is prepared in the proportion of 5 grams of funds per bucket of water. Boric acid is a fertilizer based on boron, an essential element for the harmonious development of plants.
You can also apply boron fertilizers to the ground, but this is done no more than once every 3 years. Flowers can also fall off due to a violation of the irrigation regime, fertilizing and short daylight hours.
Harvest and storage
Harvesting of eggplant falls on the ripening time. If you focus on the days, then this vegetable is considered ripe 25-40 days after the completion of the flowering stage.
The color of the fruit is not the most reliable way to determine the level of maturity, because it takes on a characteristic color long before the end of the vegetable ripening. And the method of pressing the fruit will help to check the level of ripeness: after pressing on the skin with a finger, a small depression should remain, which soon quickly smoothes out.
It is extremely important not to let the eggplant overripe. When overripe, the skin will brighten, lose elasticity, and the vegetable itself will be too hard and acquire a bitter aftertaste. Unripe fruits also do not need to be removed, they, unlike other crops from the nightshade family - tomatoes and peppers, will not be able to ripen on the windowsill, but will only wither and dry.
The bitterness in the pulp of an eggplant harvested in time may indicate that the plant was not provided with the necessary amount of liquid and a toxic (when used in large volume) substance for humans, solanine (glycoalkaloid), has accumulated in it.
In order to speed up ripening, you can force the vegetable to release all the nutrients to the formation of the fruit by blocking their supply to the leaves with an incision on the stem, gently pushed apart with a wooden stick.But this trick will bring the desired result only with tall varieties. Another way to speed up the onset of fruit ripeness is to cover the bushes with a film.
The fruits on the same bush reach maturity at different times, so the harvest is selective. It would be optimal to check every 2-3 days. For cutting eggplant, it is convenient to use a well-sharpened knife or secateurs. When cutting the fruit, do not forget to leave a part of the stem about 3-5 cm long.
Eggplants are not as well stored as, for example, potatoes, but under the right conditions, they can easily remain usable for a couple of months.
Before sending eggplants for storage, wipe each vegetable with a dry cloth. It is not recommended to wash them, as the protective shell is washed off and such fruits will remain fresh for a very short time. Then they are placed in a dark room with a temperature of 0 to +2 degrees. At first, you just need to lay out the eggplants in 1-2 layers, and then select the best preserved fruits. They are further wrapped in paper, laid out on straw and covered with a dense breathable cloth. Similarly, eggplants can keep their freshness for 60-90 days.
Recommendations
It is important to know the following.
- Do not miss the right moment for planting seedlings, you cannot be late with this matter. It is best to plant plants that have reached the age of 2 months, if you are late with this by 15-20 days, then the yield from such bushes is reduced to 25%.
- Due to the delicate root system, which can be easily damaged, this vegetable crop does not tolerate picking. To prevent damage to the roots, you can plant eggplant in peat pots.In this case, there will be no need to replant young plants and there will be no detrimental effect on the root system.
- It is unacceptable to grow eggplants and tomatoes together. Despite the fact that they all belong to the same family (like peppers, potatoes and other vegetable crops), it is with tomatoes that the neighborhood is undesirable. Despite their relationship, eggplants grow very poorly in the same greenhouse as tomatoes. It is also associated with common diseases and pests. It is recommended to place these crops away from each other. This applies not only to adult plants, but also seedlings.
- As mentioned above, for proper growth and good yields for eggplants, competent watering and top dressing are of paramount importance.
- Loosening the soil has a good effect on the growth and development of eggplant. The most important thing is to loosen the upper layers of the soil so as not to damage the delicate roots of these plants. This procedure promotes the penetration of oxygen into the ground and improves air microcirculation in it.
- To increase the yield, it is necessary to remove excess eggplant branches, since instead of being sent to the fruit, the nutrients are distributed along the shoots. The best option would be to leave 3-5 branches on each bush. It is also necessary to remove dried, wilted, yellowed and twisted leaves. After the flowering phase has passed, it is better to cut off the shoots located below the stem from the flowers.
- For cutting shoots, leaves and collecting fruits, it is best to use a pruner.
For information on how to grow eggplant in a greenhouse, see the following video.