Greenhouse equipment
A greenhouse for forcing onions made of polycarbonate or any other material must be equipped with all the necessary equipment. It is extremely important to take care of the availability of shelving, lighting, irrigation and heating systems. With their help, growing a large amount of greenery will not be difficult.
Racks and containers for planting
It is very convenient to plant onions before winter in a greenhouse on racks with several tiers. In this way it will be possible to significantly increase the yield.
The width of the structures is about 35 cm. Containers for the bulbs are selected of the appropriate size. The soil in them will warm up faster, and due to this, the feather will begin to germinate much earlier. In addition, caring for plants will be much easier. When placing them on racks, there will be no need to constantly bend over to the beds.
Lighting
As a rule, fluorescent lamps with a power of up to 60 W are used, but if desired, they can be replaced with LED or strips. The distance from one lighting fixture to another should be 1.2 m.
Irrigation and heating systems
Only with timely watering of onions will it be possible to grow a lot of greenery. In this case, warm water that has settled in barrels is used. The soil needs to be moistened systematically. A drip irrigation system can simplify this task.
It will be possible to maintain the temperature within normal limits using heating devices. For this purpose, gas or electric boilers are used. Pipes are located around the perimeter of all greenhouses. Stove heating is also suitable for heating. The use of electric heaters is allowed.
Ways to get greens
Onions grow quite well in a greenhouse. Greens can be obtained by planting bulbs, sowing seeds and seedlings. The timing of the harvest largely depends on the chosen method.
Forcing from adult bulbs
The method of planting bulbs is considered the most effective. At the initial stage, planting material is selected. The size of the heads when planted in a greenhouse is within 3-4 cm. In order to increase productivity, they are heated for 24 hours at a temperature of about forty degrees. After this, cut off the neck of each bulb. Due to this, it will be possible to provide plants with access to oxygen and accelerate their growth.
Planting sets
This method of sowing greens involves initially growing seedlings in peat pots covered with film. After the first shoots appear, the seedlings are moved to the windowsill and fertilized with compost. Plants are moved to the greenhouse only after the feathers reach a length of up to fifteen centimeters.
The timing of sowing onions for greens when using sets is earlier than when forcing already mature bulbs. This is due to the fact that it takes more time to grow feathers.
Growing from seeds
This is not a particularly popular greenhouse growing method. Caring for plants in this case is more painstaking. In this case, exclusively young seeds are used, the age of which does not exceed a couple of years.
First of all, the germination of planting material is assessed. To see if it is possible to grow greens from seeds, about twenty of them are wrapped in wet cloth and waited until they germinate. Only if the germination rate is more than eighty percent is sowing carried out. The complete absence of sprouts or a small number of them indicates that the seeds are not suitable for use.
Types and varieties for greenhouse cultivation
The following onion varieties are suitable for growing in the fall before winter:
- onion Frost-resistant varieties are used. They need to be planted in boxes measuring 40x60 cm, which, if necessary, can be moved from one place to another;
- slime The variety has excellent taste and tolerates frost well. When planting it, you need to take into account that this species is very demanding of moisture. The level of soil moisture must be monitored systematically;
- batun. The species is quite unpretentious, germinating regardless of daylight hours. It takes only 14-30 days to grow. Gardeners who have experience in forcing trumpets note that after a month the greens become tough and take on a bitter taste;
- Shallot The variety is very demanding and requires systematic feeding, as well as sufficient moisture. It is not recommended to force shallot feathers in the same soil several times in a row;
- multi-tiered. At the ends of its feathers, bulbs form from which new greenery sprouts. This crop does not have a dormant period and is capable of germinating in warm and cold seasons. The variety is characterized by resistance to frost and early ripening;
- leek. It is also grown in a greenhouse. Seeds are used as planting material. Large bulbs are not formed. It is recommended to store leek seeds of early ripening varieties for forcing in winter. They are characterized by high productivity.
Subtleties of agricultural technology in a greenhouse in winter
If you place onions in a cold, unheated greenhouse, you will not be able to get the desired amount of onion harvest. It is extremely important to monitor the temperature, water the plants in a timely manner and fertilize them. Of particular importance is lighting, without which feather forcing will be unsuccessful.
Temperature
Maintaining the temperature regime is extremely important in the process of forcing onion feathers. During the daytime, the temperature in the greenhouse should be about 20 degrees. At night the temperature drops slightly and varies between 13-14 degrees. Under such conditions, rapid growth of greenery will be observed.
Illumination
Even if the greenhouse is located in a fairly bright area, additional lighting is indispensable. This is due to the fact that in winter the daylight hours are quite short.
With the help of lighting devices it should be extended to 12 hours. Without this condition, the greens will not be able to grow at the proper pace.
Soil preparation
Sandy soil is used for forcing onions. It must be fed with manure and peat. Before planting, the soil is dug up.
Then fertilizers are applied. The following amounts of nutrients are used per 1 square meter:
- compost bucket;
- a teaspoon of sodium chloride;
- two teaspoons of superphosphate.
When using garden soil, it is extremely important to consider crop rotation. Ideally, onion predecessors should be tomatoes, beets or eggplants. For forcing, soil can be used up to four times.
Planting can be done not only in the soil. It is allowed to use small sawdust that absorbs moisture well and does not need to be replaced. At the same time, sawdust is initially poured onto the racks, and ammonium nitrate and ash are placed on top of them. Due to this, the bulbs are saturated with nitrogen and do not require additional feeding.
Landing schemes
There are several ways to plant onions in a greenhouse. Each of them has a number of features.
The bridge method involves planting the bulbs closely. This leaves no free space. Due to this, energy and time are saved. There is no need to mulch the soil and weed out. Planting material is simply pressed into the soil. This turns out to be quite enough for feather growth to begin.
The belt planting method differs in that the bulbs are placed in prepared furrows at a distance of about three centimeters from each other and up to twenty centimeters between rows. The method is suitable for planting seeds. When seedlings appear, they must be thinned out.
Watering and fertilizing
When forcing onions, fertilizing is optional. This is due to the fact that all the fertilizers that were needed were applied to the soil before planting. Plants begin to be fertilized additionally when thin, pale feathers appear. The nutrient solution is prepared from a teaspoon of urea and ten liters of water. All greens are sprayed with the prepared liquid. Immediately after this, it is watered with water.
To speed up the growth of feathers, feeding is carried out at intervals of one and a half weeks. The last time the onions are processed is ten days before harvest. Fertilizers such as Humisol or Vermistim can be used.
Plants need to be watered as the soil dries out. Typically, this procedure is carried out at intervals of two or three days. Water at room temperature is used. It is extremely important to monitor the soil moisture level. An abundance of liquid can cause the bulbs to rot.
Preparing indoor soil for growing onions
Onions can be grown in a summer greenhouse by planting them in the fall or at the end of winter. Forcing the feathers will happen much faster than in open ground, and the onions for salad will be ripe already in March-April. If you want to cultivate a plant in a greenhouse all year, you need to prepare it.
Onion plantations in a greenhouse
Rules for arranging a greenhouse
Green onions can be grown in a greenhouse year-round if the following conditions are met:
- The greenhouse must be heated. In winter, when forcing feathers, the daytime temperature should be maintained at 20-23? C, and the night temperature should not be lower than 14-15? C.
- Illumination. Plants need light for the process of photosynthesis. In conditions of short daylight hours in winter, it is necessary to ensure that the onion stays under light for at least 13-14 hours a day. It is recommended to place fluorescent lamps strictly vertically, then the feather will grow straight and without kinks. If the bed is multi-tiered, separate lighting should be made for the lower tiers.
- Humidity. In a greenhouse for growing onions, it is necessary to maintain moderate humidity, avoiding drying out or waterlogging of the soil. The optimal regime for watering the plant is once every 4-5 days.
Illuminated onion racks
Basic soil requirements
Green onions grow well in sandy soil mixed with peat and fertilized with humus. Before planting it, experienced gardeners advise digging up the soil, adding fertilizers - manure or compost (1 bucket), sodium chloride (15 g), superphosphate (30 g) per 1 square meter of soil.
Onions do not require a lot of soil to grow into feathers, so it is recommended to cultivate this plant not in beds, but in specially equipped boxes that can be placed on shelves.
The best predecessors of onions are tomatoes, beets, carrots, and eggplants.
Arrangement of beds on racks
Planting in closed ground: timing and methods
It is best to grow onions for greens in a greenhouse from October to April, before they grow in open ground. Having planted the plant in October, providing it with all the conditions, after 20-30 days you can make the first feather cut. The following batches can be planted at intervals of 10-15 days, ensuring uninterrupted harvesting.
Planting can be done by seeds, seedlings and selections (seedlings). The first two methods are quite labor-intensive and are used if the plant is not propagated vegetatively. Usually they are planted in selections (seedlings) - small bulbs or detached bulbs (false bulbs).
Before planting, the samples must be prepared by heating them in warm water (about 40? C) and cutting off the top. Immediately before planting the bulbs in the ground, you can dip them in a solution of potassium permanganate.
There are two ways to land:
- pavement: bulbs are planted close to each other without gaps, it is recommended to use when planting in autumn and winter.
- ribbon: the bulbs are planted in a row with an interval of about 3-5 cm, the row spacing is about 10-15 cm, recommended for spring planting.
Growing green onions in pots
Features of growing onions hydroponically
To plant onions hydroponically, special equipment is purchased, consisting of containers into which water is poured, as well as a lid with holes and a compressor with a sprayer.
The water temperature is maintained within 20 degrees. To stimulate growth, it can be increased to 25 degrees. An aquarium heater is used for this purpose.
When using hydroponics, the feathers reach the desired length after just a couple of weeks. It is important that the lid fits tightly to the tank. Due to this, light will not reach the root mass. Bubbling using a compressor is carried out for twelve hours.
Growing onions for feathers is a simple process. By adhering to the basic rules and requirements, you will be able to get a good harvest in the shortest possible time. To do this, you just need to choose the right variety and adhere to agrotechnical requirements.
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Growing technologies
It doesn’t matter, we are talking about growing onions for harvest in a greenhouse in the winter for yourself or for sale, you want to have a ready-made harvest as quickly as possible. And the second important point is the presence of such greenery throughout the cold season. And in early spring, you want to saturate your body with vitamins. And you need to know how to quickly get this green harvest.
Seeds or bulbs
In any case, feathers as greenery can be obtained both from seeds planted in the soil and from bulbs. But the ripening period will be different. And this plays a significant role when it comes to making a profit. And I myself want to get ready-made greens as quickly as possible. So it turns out that it is more profitable to plant bulbs in prepared soil rather than seeds. The feather will grow out of them much faster. If the greenhouse is unheated, then it is better to plant nigella in it in early spring. But for this, the seeds must be properly prepared. Before planting, they need to be soaked.
In the sawdust
Many gardeners grow onions for greens on sawdust. Sawdust retains moisture well. But at the same time, they allow oxygen to pass through perfectly. This is achieved due to the porous structure of sawdust. But in order to disinfect them, in order to remove various bacteria and microorganisms, the sawdust must be treated with boiling water. The landing process consists of the following steps:
- preliminary soaking of the bulbs using a solution of potassium permanganate;
- sawdust is prepared and placed in containers;
- bulbs are laid out on top;
- then all this is covered with an additional portion of sawdust;
- after this you can start watering the sawdust with warm water;
- To make the feather appear faster, areas with planted bulbs are covered with film.
Hydroponics
Growing onions hydroponically seems more attractive, since there is no need for soil at all. The bulbs are simply placed in vessels with water, where nutrients are added. But this option is not very cost-effective, because it will require significant costs for a hydroponic installation. True, these costs are later compensated.
How to grow onions in a cold greenhouse
It is recommended to plant onions in a greenhouse after planting tomatoes, eggplants, beets and carrots. Before you start planting onions, you need to:
- Loosen the soil.
- Saturate with compost and manure.
- Add mineral fertilizers at the rate of (30 g superphosphate and 15 g potassium).
- After which, the soil is thoroughly mixed and leveled.
Advice. Experts recommend using dry varieties without damage to get a good feather. Troitsky, Skopinsky, Bessonovsky, Spassky with 3-5 cm in diameter are considered good.
Boarding time:
- The bulbs are planted in early October so that the plants have the opportunity to take root well before the cold weather.
- Plant onions in a greenhouse on greens at a distance of 2.5 cm to 4 cm and leave until cold weather sets in.
- After the onset of cold weather, the soil is covered with manure and straw, at least 15 cm thick.
- At the end of March, the upper part is cleared of snow, the insulating layer is removed and the greenhouse is covered with film.
- When the feather is formed, the crop will need to be constantly fed and watered.
- During the entire spring period, mineral fertilizers are applied twice at a rate of 15 g per kW. m.
Attention! Since onions sprout early, the likelihood of them being frozen increases. It is recommended to strictly ensure that there are no weeds.
How to plant onions in a heated greenhouse
Planting in a heated structure
It is possible to grow onions in a winter greenhouse all year round. For this, peat or special garden soil is most often used. Warming up the bulbs helps improve yields. Do-it-yourself onion care in a heated greenhouse:
- In warm greenhouse conditions, onions are watered regularly. During the day the temperature should be maintained from 18 to 20 degrees, and at night from 12 to 15 degrees.
- Given that winter days are much shorter, it is recommended to provide additional lighting in the greenhouse to ensure the length of the photoperiod, which should be 12 hours or more.
Advice. It is advisable to place the lamps vertically to avoid damage to the pen.
If the technology is followed correctly, the harvest can be harvested within a month.
Properties of green onions - harm and benefit
Medicinal properties of onions
As we have already written, green onions, due to the vitamins, micro- and macroelements they contain, help a person cope with spring vitamin deficiency. It is used as a general tonic for respiratory diseases. The phytoncides contained in its composition in large quantities cleanse not only the human body of viruses and bacteria, but also the room in which onions are grown.
The chlorophyll contained in green onions, in combination with other beneficial substances that make up the onion, promotes the process of hematopoiesis, which is why onion greens are so useful for those suffering from anemia.
Planting and caring for onions in open ground
Onion greens are also rich in essential oils, which effectively destroy infections and viruses such as the causative agents of tuberculosis, dysentery, sore throat and diphtheria. Oils disinfect the oral cavity and stimulate the activity of the heart muscle.
The composition of onion greens includes zinc, nitrogen, calcium, potassium, phosphorus and magnesium, the lack of which can cause hair loss and peeling nail plates. In addition, green onions contain the following vitamins:
- A – beta-carotene, a powerful antioxidant responsible for the quality of vision, nails, hair and skin, ensuring the functioning of the heart muscle and helping the body resist the harmful effects of free radicals;
- B1 – thiamine, necessary for the regulation of protein, fat and carbohydrate metabolism;
- B2 – riboflavin, which neutralizes toxins that irritate the respiratory tract, is involved in the formation of red blood cells and helps maintain reproductive function at the proper level;
- B3 – either nicotinic acid, or vitamin PP, or niacin, which supports the body’s immunity, promotes the breakdown of proteins, fats and carbohydrates and cleanses the body of excess cholesterol;
- B9 – folic acid, which is involved in protein synthesis and contributes to the regulation of the nervous system;
- C – ascorbic acid, a powerful antioxidant, a biologically active substance that participates in the process of hormone synthesis and increases the body’s resistance to bacteria and viruses;
- E – tocopherol, which is responsible for fertility, youth, the condition of the skin, nails and hair, giving them elasticity and responsible for the quality of functioning of the female and male reproductive organs.
Green onions - contraindications
It is not recommended to consume green onions raw for people suffering from gastritis with high acidity and peptic ulcers of the digestive system. Excessive consumption of green onions can harm hypertensive patients, since the product tends to increase blood pressure. People with bronchial asthma and diseases of the cardiovascular system should give up green onions at least during the period of exacerbation of the disease.
What types of onions are there?
There are several types of onions that have their own growing characteristics. Let's take a closer look:
- Leek.
- Shallot.
- Batun.
- Schnitt.
Each type of onion has a specific approach and growing technology.
Leek
Features of growing leeks
This variety is grown from seeds and is especially valued for its delicate aroma and excellent taste. Both the greens and the white part of the variety are used for food. Planting instructions:
- Before planting the crop, the seeds are pre-soaked and planted in small pots that are 2/3 filled with soil.
- The seeds, covered with soil, are covered with plastic wrap and placed in a warm place.
- The seedlings are watered every three days (the bag is removed and then put on again). When the crop germinates, the bag is removed and the seedlings are placed on the windowsill.
Note. Before transferring onions to the greenhouse, it is necessary to fertilize the soil well with ash and humus.
- The plant is planted one at a time at a distance of 100 mm from each other. In dry weather, the onions are watered and soaked.
In order to get a long white leg at the finish, it is recommended to make special grooves in the soil. The seedlings need to be planted at the very bottom, and add soil as they grow.
Drought tolerant shallot plant
Photo of shallots
This variety has an excellent aroma and pungent taste. The base resembles garlic.Features of the culture:
- The crop propagates vegetatively and has a very high yield; the price of the crop is not high.
- When onions are planted, they are divided into several parts (3-8).
- Since the culture is growing rapidly, the distance between them should be no more than 16 cm.
Planting is done in autumn and spring, and ripens much faster than regular onions.
Batun
It is recommended to grow it in a heated greenhouse, even in winter, since the crop is not demanding on the length of the day. Features and characteristics:
- Forcing onions will take about 26 days if done in November.
- In winter, from 14 (February) to 20 days (January).
The culture requires frequent watering. The greens are even, which distinguishes them from ordinary onions, and the cost is much lower.
Chives
Features of culture
The crop reproduces by thickening the rhizome, which is why it appears in large quantities during the growing season, so obtaining planting material is not a problem.
Peculiarities:
- In late autumn, the material is dug up and left for about three weeks. After which the onions are ready for planting in the greenhouse.
- In order for it to begin to germinate intensively, the culture is watered with warm water (temperature from 35 to 40 degrees).
- The soil thickness must be at least 100 mm and does not need to be fertilized.
- When the onions begin to sprout, it is necessary to maintain a temperature of 20 to 22 degrees.
Advice. When the feather is formed, the temperature climate should be maintained between 16 and 18 degrees. But in order for a feather to be beautiful there must be a lot of light.
- Watering is carried out regularly in small portions; soil moisture should not exceed 80 degrees.
Attention! Too high humidity can negatively affect the quality of feathers.
Growing onions is not a difficult task; you just need to fully follow the technology.
The best types of onions and features of growing each
Annual onions are traditionally grown in greenhouse conditions, but their yield is significantly superior to other varieties:
- batun;
- shallot;
- leek;
- chives;
- slime;
- multi-tiered.
Technology for growing onions
To obtain green feathers, many people prefer onions. The bulbs are planted in the greenhouse in the fall or early winter after harvesting other crops using the bridge method. Before planting, they are heated in warm water (38-40? C) and the neck is cut off. It is also advisable to rid the seedlings of excess husks.
When growing onions in a greenhouse, it is advisable to maintain a temperature that is comfortable for the greens - about 20? C during the day and 13-15? C at night. Watering should be done with water at room temperature, fed with a solution of mullein, which should be carefully poured under the root.
The harvest can be harvested within 28-30 days after planting; during this time the feather will reach a height of 25-30 cm. During the period of its intensive growth, the greenhouse should be well ventilated, avoid overheating and waterlogging. At high temperatures, the forcing and growth of feathers will proceed at an accelerated pace, but the leaves may lose the necessary elasticity, which will lead to a deterioration in their quality. It is recommended to stop watering 4-5 days before harvest.
Onion greens are a welcome guest on the table
The nuances of caring for onions
Batun is good because it is not demanding on the length of daylight hours, temperature conditions (temperatures up to 15? C are suitable for forcing feathers), it prefers abundant watering and moist air (about 80-85%), non-acidic soil, and gives quick forcing. When planted in November, the harvest can be harvested after 25-28 days, in January - after 19-20 days, in February - after 14-16 days. Since the plant is perennial, it is recommended to fertilize the soil under it with compost, humus, and add solutions of superphosphate, potassium sulfate, and urea.
The bulb does not form real bulbs; the part of the stem located in the soil thickens (the so-called false bulb is obtained) and forms new daughter shoots.
After 4-5 years of growing in one place, the mother plant can form up to 30 young shoots, which significantly thickens the plantings and reduces the quality of the harvest.
Growing this onion in a greenhouse can be done in 2 ways:
- seeds;
- in divisions.
In the summer after flowering, the mother bush is divided into separate shoots, which are planted in a strip method according to the scheme: 25-30x40 cm to the depth of the mother plant.
Onion - a double of green onions
Seeds are sown in spring or mid-summer in rows at intervals of 15-20 cm to a depth of about 2 cm, mulched on top with peat or humus. The plantings are weeded and thinned out after the leaves appear, leaving first 3-5 cm between shoots, then 8-10 cm. This weeding method makes it possible to achieve the recommended 25-30 cm between the mother bushes by the second growth cycle and ensure high productivity.
Feathers are cut at ground level twice in spring and twice in autumn, when the length of the greenery becomes 20-25 cm.
The leaves of the first cut are very tender and contain large amounts of vitamin C, vitamin A, PP, B, magnesium salts, iron, and potassium. Batun has a dormant period (approximately July-August) lasting about 2 months. At this time, it is advisable to feed the plant with mineral fertilizers; with the strip planting method, loosen the rows and water.
Technique for growing shallots
Shallots are an early ripening frost-resistant onion that produces an excellent harvest of green feathers. Its leaves are slightly different from onion leaves, they are awl-shaped, practically do not shoot, and retain their delicate taste, vitamins and minerals for a long time. A feature of shallots is that they have a similar method of reproduction to garlic - the mother bulb forms up to 10-15, sometimes more - up to 30-40, cloves. Because of this feature, shallots are called “centipede”.
It is recommended to plant shallots in well-fertilized, fertile soil. The best predecessors for it are legumes. Such onions can grow in one place for 4-5 years, after which they need to be replanted. It is not recommended to simultaneously plant shallots and onions in a greenhouse: these species can cross-pollinate and become infected with the same diseases and pests.
Onions and shallots
Shallots are planted with bulbs using the ribbon method at a distance of about 10-15 cm, between rows - up to 25 cm. Before planting in the spring, it is recommended to apply fertilizers: superphosphates (at the rate of about 25 g per 1 sq.m.), calcium chloride (15 g), saltpeter (15-20 g). During growth, it is recommended to feed the plant twice with diluted mullein (a liter per bucket of water).
It is recommended to water shallots no more than once a week; they do not like high humidity, and the bulbs are prone to rotting.
The cutting of shallot leaves is carried out already a month after planting, when they reach a height of 20-25 cm. This onion for feathering in a greenhouse is best used for spring forcing in February. In terms of greenery yield, shallots are the record holder: from 1 sq. m area, you can collect up to 16-20 kg of green feathers, which is almost 2-2.5 times more than onions.
Features of leek agricultural technology
Growing leeks in a greenhouse is slightly different from other types, since this variety is propagated by seeds and is usually planted as seedlings in the ground. Pre-sowing preparation of the material consists of disinfecting the seeds; they are alternately placed in hot (40? C) and cold water, then germinated.
In a greenhouse, leek seedlings are planted in a strip method at a distance of 8-10 cm. The best predecessors for leeks are legumes, cabbage, and tomato. It is not recommended to plant it after cucumbers, garlic, carrots or other types of onions, since root rot pathogens or nematodes may remain in the soil.
The peculiarity of leeks is their long white stem.
The leek's tall white stem with a delicate taste is especially prized. To form it, seedlings need to be planted in deep enough grooves; as they grow, they need to be hilled up by adding soil. Leeks are fertilized with mullein, superphosphate, and urea; the first fertilizing is carried out 18-20 days after planting the seedlings.
Leek is a moisture-loving plant and requires careful watering, otherwise the onion will taste bitter. It is recommended that after planting seedlings in moist soil, do not water them for 3 days, then once every 4 days.
Secrets of chives productivity
Chives are an early ripening perennial, suitable for quickly forcing greens. It is propagated by seeds and by dividing the rhizome; divisions are obtained in late autumn by digging up the mother bush and dividing it into several pieces. After this, it is recommended to leave the divisions at rest for 3-4 weeks, then you can plant them in a greenhouse. Before planting, chives seedlings should be watered with hot water (38-40 degrees C) to “wake up” them.
There are no special requirements for the composition of the soil when cultivating chives, but it is advisable to use sandy-clayey soils enriched with humus.
The agricultural technology for growing this onion in a greenhouse is simple: the temperature during forcing should be in the range of 14-18 degrees C, air humidity - about 80%, watering is moderate, since if it is over-watered, the plant rots, and if there is a lack of moisture, it begins to taste bitter. At optimal temperatures, the first feather cut from 2-3-year-old plants can be done 10-14 days after forcing; 2-3 cuts are taken per season.
Cut chives
How to grow slime onions
Slime onions are not as widespread as onions or spring onions, but along with leeks they are beginning to conquer their niche. The feather of the slime onion has a faint onion-garlic odor and a mildly pungent pleasant taste. The greens contain mineral salts of zinc, potassium, manganese, highly active phytocindes, vitamins B, PP, C. The green feather of the plant remains tender throughout the entire growth period, it is fleshy and juicy. When cutting leaves, a clear mucus is released.
Slime is a perennial, propagated by seeds and division of the mother bush. The plant produces its main harvest 2-4 years after planting, so it is recommended to renew it every 4-5 years. This type of onion is picky about soil, prefers slightly acidic or neutral soils, and requires organic fertilizing.
Before planting onions, you should enrich the soil in the greenhouse by adding humus, compost, and ash. During the growth period, the slime should be fed twice with phosphorus-potassium fertilizers. It is advisable to soak the planting material for a couple of hours in a warm solution of succinic acid and sodium humate.
Sharp and fleshy leaves of onion
By growing slime, you can save on lighting - it is not as demanding on the length of daylight hours as other varieties. But you need to water it regularly and abundantly, since the taste characteristics of the feather and its juiciness directly depend on the water supply.
The leaves can reach 40 cm in height; the plant produces full cuttings 3 years after planting. During the growing season, 3-4 cuttings can be made of the slime; in some varieties, the leaves grow in 30 days, in others - in 40.
Ingredients for the success of a multi-tiered bow
Multi-tiered onions are far superior to other types in terms of green yield, since they do not have a dormant period, and the feathers are constantly being forced out. This species reproduces using aerial bulbs, which should be planted in a greenhouse immediately after cutting, or by dividing an underground uterine bulb. This variety prefers loamy soils, temperature conditions in the range of 10-15? C.
Multi-tiered onions are planted in a greenhouse using the bridge method.
Before planting, the bulbs are moistened in warm water, covered with burlap and kept for about 2-2.5 days in a warm place. You can soak the seedlings in a warm aqueous solution of ammonium nitrate (25-30 g per bucket). Consumption of planting material per 1 sq. m of soil - 10 kg of bulbs, from this area you can get up to 16 kg of green feathers.
Aerial bulbs of multi-tiered onions
Technological features of growing crops
For planting, you will need to choose exactly those varieties that will allow you to get an excellent harvest. Today, the Troitsky and Spassky varieties are especially popular. How to grow onions in winter, recommendation:
- In order for the greens to be of high quality, it is necessary to provide lighting for 12 hours a day, after the second forcing.
- It is not recommended to use bulbs that are too small for planting. Then the feather does not sprout quite beautifully.
Features of growing onions in the basement:
- For basement growing, regular shelving is quite suitable. This will allow you to use the maximum usable area of the room.
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Harvesting
Whatever the winter turns out to be, cold or not, if you choose the right onion variety, you can get a harvest very quickly. If, according to forecasts, it will be very cold in winter, and the temperature in the greenhouse will drop to zero, then it is better to plant the Egyptian variety, it is not afraid of such changes. In any case, harvesting is already possible a month after planting.
Watch a video in which a gardener compares technologies for growing onions in a greenhouse in winter using pine sawdust and soil.
What conditions are required?
Onions in a greenhouse in winter will grow well if the necessary conditions are met. To do this, it is necessary to prepare the soil, select suitable planting material and maintain optimal temperature and humidity levels in the greenhouse.
The best conditions for onion growth:
- The temperature should be maintained in the range of 18 - 20 degrees Celsius during the day and 12 - 15 degrees at night.
- For photosynthesis, it is necessary to provide daylight within 10 - 12 hours, so it is necessary to install lighting lamps in the greenhouse.
- Regular watering with water, the temperature of which will not be lower than 20 - 30 degrees. For dense plantings, you can consider a fine spray system.
- For good results, fertilizers are applied to each square meter of soil at the rate of a bucket of manure (necessarily rotted), 30 grams of superphosphate and 15 grams of potassium chloride.
- Air humidity should be between 60 - 70%. Too high an indicator negatively affects the health of plants, leading to fungus and mold.
The greenhouse must be equipped with a heating system and ventilation. It should be borne in mind that plantings will need oxygen for successful growth, so it is imperative to provide daily ventilation. This procedure will also help harden the plants and also normalize high humidity levels.
Greenhouse equipment
When planning to grow onions in a greenhouse in winter, you need to prepare everything correctly. It is important to equip the greenhouse so that it is not damaged by precipitation or sharp gusts of wind. For these purposes, a polycarbonate greenhouse is best suited. It can be placed even in a small area. And installing it is not very difficult.
In order for the soil to warm up well in winter, you need to worry about a reliable foundation.
Also, when equipping it, you must not forget about the following systems:
- watering;
- heating;
- lighting.
Planting dates and work order
Planting onions on greens before winter in a greenhouse occurs at different times, depending on the climate zone, the selected variety and further use. Usually, if the necessary conditions are provided, onion cultivation can be done all year round. Growing onions by seeds is possible by direct application to the soil and by seedlings. Regular onions and their varieties are grown into small onions, the tops of which must be cut off for quick forcing.
The main secrets of forcing onions into feathers:
- Before planting, bulbs and seeds must be sorted, discarding those that are not viable. You should definitely warm them up at a temperature of 40 to 60 degrees for about an hour. This stimulates the growth of green shoots.
- For additional disinfection, planting material is placed in a warm solution of potassium permanganate and then dried. Instead of potassium permanganate, you can use special solutions, as well as substances that stimulate root growth.
- The distance between rows should be maintained at least 15 centimeters, otherwise the plants will not have enough nutrients.
- The soil is moistened two days before planting; after planting, the onions are not watered. On average, watering is necessary once every three days, and it is advisable to use sprayers or the drip method.
- The seeds are deepened into the soil by 1 - 1.5 centimeters, the bulbs by about the same amount. After planting, it is advisable to mulch the surface of the earth with straw, plant tops or sawdust. The seeds are additionally covered with a film, which must be removed after the first shoots appear.
- Further care comes down to watering, loosening and weeding. The temperature must be maintained in a comfortable range, and the room must be ventilated.
With this technology, even from a small greenhouse you can harvest quite a decent harvest. Onions can be grown on racks in several rows, if all plants are provided with the same amount of light. In addition to benefits for the family, this can be a good business idea; besides, you can grow other vegetables along with onions: cucumbers, tomatoes, zucchini, cabbage, lettuce.
Planting and growing
When planting onions, you should consider its variety. In some cases, it is more preferable to cultivate by seed. But other varieties are planted by selecting seedlings. It is necessary to check that the soil is moist. But under no circumstances should overflow be allowed. In this case, the bulbs will begin to rot.
It is advisable to plant the bulbs in rows, this will make it easier to care for them. You can sit next to each other. It is better not to use pure black soil for growing this crop. It is much better if the soil is sandy. But it is advisable to fertilize it, if not with peat, then at least with ready-made humus. It is important to remember that this plant loves light and warmth, but elevated temperatures are dangerous for it.
Look what crops gardeners from northern Asia managed to grow in a greenhouse in winter.
Which varieties are suitable for winter cultivation?
Onions are planted in a greenhouse before winter using early and early ripening varieties of onions. This is the most popular variety of onion in our country, but it has many equally worthy competitors.
What onions can be grown in a greenhouse:
- Leek. The thick and fleshy stem is devoid of the characteristic onion bitterness and does not form an underground onion. Used fresh and for preservation, it has a milder taste and excellent yield (more than 2 kg/m²).
- Shallot. An unpretentious crop that produces numerous tufts of green feathers. The average yield is from 3 kg/m².
- Onion - chives. Ideal for growing greens in a greenhouse in winter. The productivity of this crop also reaches 3 kg/m².
- Batun. It is distinguished by its high quality and beneficial composition of greens. Does not form a bulb, yield reaches 3.5 kg/m².
- Bow - parade. A special variety that can be grown in a greenhouse in winter solely to produce green feathers. Under favorable conditions, up to 6.5 kg/m² can be harvested.
- Egyptian multi-tiered. A unique variety, it is unpretentious and has a mild taste, the yield is about 4 – 5 kg/m².
- Onion is a slime. The flat leaves have a soft texture and a pleasant garlicky smell. Usually grown in open ground, it can also be used for a greenhouse or greenhouse. A perennial plant with a well-developed root system.
The popularity of the presented varieties is increasing every day, because such plants contain many vital vitamins and minerals. Unlike regular onion heads that are meant for storage, green feathers provide more benefits. That is why growing green onions in a greenhouse in winter all year round will provide the whole family with the necessary vitamins, and can also be a good source of additional income.
The soil
Onions are not very picky about the type and composition of the soil. Therefore, almost any land can be used for planting it. But still, in order to increase productivity, several conditions regarding the soil must be met.
The soil should be:
- wet;
- loose;
- with feeding.
How can you make black soil loose? You just need to add sand to it.
If we are talking about growing onions in a greenhouse in winter for beginners, then such preparation may be quite enough. But it is much more profitable to use not just soil, but to make special racks. And then boxes are installed on them, into which soil is already poured. It will definitely need fertilizing in the form of wood ash. This will help achieve a higher yield.
Gardener Ilya Bydyashkin in his video shows the arrangement of his greenhouse with racks for the profit of green onions.
Onion pests in a greenhouse
Even with careful tillage of the soil, pests can appear in the greenhouse when growing onions in winter. To know how to fight them with your own hands, you need to get to know the enemy better “in person.”
Main pests of onion crops:
- Onion fly. It lays eggs in the root area, after which the plant withers, the leaves dry and wither, and the bulb rots in the ground.
- Onion thrips. A characteristic sign of this pest are white stripes and spots with small black dots inside. The feather begins to bend and turn pale, and rough areas form on the surface.
- Onion root beetle. Attacks of this pest occur during the period of active growth. The plant begins to lag behind in development, the leaves turn yellow and wither, the bulbs soften and begin to rot.
- Onion mite. Most often it causes damage to the crop during storage, but the plant also suffers from it during the growing season. A characteristic sign of its appearance is yellowing of the tops of the stem.
- Onion cracker. The insect lays eggs on the leaves of plants, after which the larvae gnaw their way to the middle of the bulb. It is by the through holes at the bottom of the leaf that this pest can be identified.
- Onion aphid. This pest is especially active in mid-autumn and early spring. A sticky coating and whitish skins are observed on the leaves, the shoots wither and turn yellow.
Pest control occurs using traditional methods and the use of pesticides. The simplest and safest way is to dust the shoots with tobacco dust, spray with a soap solution and infusion of wood ash. In case of severe lesions, it is better to uproot the infected bulbs, and in the future the soil can be used after disinfection treatment.
Features of growing onions in a greenhouse
For normal and fruitful forcing of onions, two basic conditions are vital: temperature and light. Of course, the humidity and quality of the soil also play a role, as well as the quality indicators of the seed material, but the latter will be discussed in detail in the next chapter.
Forcing onions into feathers can occur at temperatures from + 8 ° C to + 25 ° C. At the time of planting, it is desirable that the temperature be within + 18-22 ° C. Of course, in the middle zone in a greenhouse such a temperature can only form during the daytime. At night you will most likely need to use additional heating. To maintain heat at night, it is important to pay attention to good thermal insulation of the greenhouse. This issue should be taken into account at the stage of its construction, so as not to skimp too much on the thickness of the greenhouse covering material.
To simplify your task, it is advisable to use racks or special tables raised above the ground for planting onions. After all, the air in greenhouses warms up much faster than the soil below, and this will reduce heat costs for heating. In addition, racks can provide an increase in planting area if they are made in two or even three tiers.
In the first 8-12 days after planting, onions practically do not need light, and then 12 hours of daylight is enough for good development. A similar level of lighting can be provided without installing additional lamps if the onions are planted no earlier than the beginning of March.
To successfully force onions into feathers, the air in the greenhouse should not stagnate, and the air humidity inside should not be too high. These factors together have a depressing effect on the growth of greenery and can lead to various unpredictable diseases. To reduce humidity, you can adjust the temperature (lower it). You can use a regular household fan to circulate air, and in warm weather, be sure to ventilate the greenhouse.
Watering onions grown for harvest is vital only at the very beginning of the process, after planting. Then a lot depends on the temperature and conditions that will be in the greenhouse.
The best varieties of onions for greens for growing in a greenhouse
If growing onions for harvest is one of the means of income, then choosing the most suitable variety is the basis for possible profitability. You should choose from those varieties that will be either multi-lobed or multi-primed. There are several varieties that are most advantageous to use for forcing in greenhouses.
Karatalsky
One of the best varieties for growing in greenhouses as a feather, since it is both multi-primed and multi-nestled. In addition, he has a very short rest period and is able to wake up early. Having planted it, you can always be confident not only in the quality of the harvest, but also in the early stages of its receipt.
Rostov local (Lugansk)
Local Rostov onion also shows good results when grown for feathers. It has at least three primordia and is characterized by an average dormant period. This variety has another remarkable property - the impressive fleshiness of the feather. When planting large bulbs with a diameter of more than 5 cm, the harvest can be more than decent - up to 15-18 kg per 1 sq. m.
Stuttgarter Riesen
Although this onion has a long dormant period, it is ideal for forcing greens in a greenhouse in the spring. More than three rudiments can always be found in it, and it forms a powerful, beautiful and healthy feather. Plus, it's pretty easy to get. The variety is well known and is found almost everywhere.
Egyptian
This is a rather conventional name for onions for growing onions. Since it is of imported origin, it may not be too easy to obtain. But it has many buds and grows well.
Chalcedony
Although this onion usually has no more than 2-3 rudiments, it is distinguished by its unpretentiousness and good growth, and most importantly, it is found everywhere. It will not be particularly difficult to find its seeds for planting. The Bessonovsky Urogony, Danilovsky 301 and Strigunovsky Local varieties have approximately the same properties.
Which greenhouse is best to plant in?
Greenhouse conditions are considered optimal for achieving rapid and healthy plant growth. Since in these conditions it is possible to create constant temperature, humidity and light.
Greenhouses can be made from different materials. Glass, polycarbonate, and film are also suitable. It all depends on the quality of the soil, the function of the structure, etc. The most important thing that needs to be taken into account when building a greenhouse or greenhouse is that in autumn, winter and early spring it must be sufficiently lit and heated. These are two main factors that affect the final yield of the planted crop.
Many gardeners prefer polycarbonate coating. It retains heat better than glass, and is stronger and thicker than film, but is transparent enough to transmit light well.
The shape of the greenhouse plays a significant role for growing onions. In cold weather, snow covers the greenhouse, thereby preventing sufficient lighting.
In this case, you need to switch either to artificial light or remove the snow cover in a timely manner. Snow does not stay on gable and round roofs.
The greenhouse frame can be anything, but when using them you need to perform some steps. Thus, a wooden frame needs periodic painting, antiseptic treatment, and primer. Otherwise, the base will deform and rot.
A metal frame is most often used, as it is stronger and stiffer than a wooden one. But even in this case, care is necessary: to avoid corrosion, the product must be periodically painted or primed.
Preparation of soil and planting material
Onions can be planted both on a soil substrate, the basis of which is ordinary garden soil, and on artificially created soil, the basis of which is sawdust. For beginners in this business, it is advisable to use ordinary soil, which is located in the greenhouse. You just need to mix it with humus or compost in the fall, adding a bucket of these components per 1 square meter. m. soil.
You can even grow onions for harvest in boxes placed on the surfaces of shelving. In this case, the thickness of the soil layer in them is approximately 5-6 cm. If the boxes are sealed or covered with plastic film, then it is imperative to provide drainage holes in them to drain excess liquid when watering. Otherwise, the bulbs may simply rot from excess moisture.
Preparing the onion itself involves several procedures. To begin with, before planting, the onion must be placed in a warm room for several days and allowed to warm up. After all, onions are usually stored at a temperature of about + 5 ° C so that they do not germinate.
Then the bulbs need to be sorted by size. For forcing, you can use bulbs with a diameter of 3 to 8 cm. Larger bulbs may no longer give the expected effect of increasing the yield, and smaller ones will form feathers that are too thin and weak.
It is best to have bulbs of approximately the same size in the box. In this case, germination will be more uniform. To speed up the process, as well as for more beautiful and uniform germination of the feathers, the necks of each bulb are cut off, leaving approximately ¾ of the bulb itself.
No less important is the soaking procedure. In extreme cases, you can do without it, but it significantly speeds up the germination process and, most importantly, disinfects the planting material. Onions are usually soaked directly in bags in warm water at a temperature of + 50 ° C with the addition of potassium permanganate.
Attention! The soaking period can range from several hours to a day.
Planting with bulbs
Multi-primed varieties of onions are planted in the greenhouse for forcing feathers in winter. They are more productive and produce more greens. When selecting seed material, bulbs with a diameter of about 4 cm are selected.
To understand how many rudiments a variety has, you need to cut off the top of the bulb and count the number of nests. They are clearly visible, they are green or pale yellow. The best varieties of onions for feathers:
- Bessonovsky;
- Arzamas;
- Strigunovsky;
- Chernigovsky.
Before planting , the bulbs are prepared. This takes several days. First they are heated at a temperature of 40 °C. Then they are soaked for several hours in water heated to 50 °C. The neck of each bulb is cut off at the shoulders before being placed in water. After this, the planting material is kept in a damp cloth for 3 days.
Planting onions on greens in a greenhouse
Planting onions on feathers in greenhouses can theoretically be done both with the help of ready-made bulbs and with seeds - the so-called nigella.
Seeds
This method is incredibly labor-intensive and time-consuming. Therefore, it is suitable only for those who do not have the funds to buy ready-made bulbs for planting in the required quantity, but who have a lot of free time and a desire to tinker with onion seedlings.
In this case, usually in the spring, onion seeds of a suitable variety are sown in boxes and the seedlings are cared for for a whole year until next spring. In the summer they are planted more freely, so that by late autumn they can turn into bulbs of more or less decent size. Then they are dug up and stored in a cold place until spring, when they can be planted in the usual way, which will be described below.
Bulbs
When growing feathers from bulbs in greenhouses, the bridge planting method is most often used. In this case, per 1 sq. m. usually spend about 25-30 kg of finished bulbs. This amount is approximately one standard mesh bag of onions.
How to plant onion sets on greens in a greenhouse
With the bridge method, pre-prepared bulbs are planted almost on the surface of the ground with the cut side up, deepening them only 1 cm. Moreover, the planting density should be such that almost all the bulbs are in contact with all their parts with each other. The bulbs, figuratively speaking, line a bridge, hence the name of this planting method. Thus, a large amount of space is saved, which is especially important for small areas in compact greenhouses.
When landing for the first time, it can take quite a long time. With gaining experience in landing 1 sq. m. in this way should take no more than 30 minutes for one person.
Attention! After planting, the onions are thoroughly watered and left in this form until the first sprouts of greenery appear.
How to grow greens in the ground in winter
Growing crops in greenhouses and greenhouses has a number of features. This is mainly due to the presence of artificial sources of heat and light, as well as the lack of free air movement. The remaining activities - fertilizing, watering - are not too different from care when planting in the ground.
The conditions in the greenhouse are considered special also because here it is possible to ensure constant temperature and humidity. In conditions of stability, mass emergence and rapid growth are achieved.
How to plant seeds
Growing onions for feathers includes the following activities:
- preparation of material - in this capacity uses onion sets or seeds. The first option is more reliable. Before planting, the bulbs are soaked in warm water for 12 hours and then dried. To speed up germination by 5–6 days, you can cut off the neck of the bulb and make a couple of vertical cuts: in this case, the bud will receive more oxygen, which means it will grow faster;
- planting - they use a variety of methods: tape, pavement, in boxes, on sawdust, etc. On farms, they prefer pavement: the bulbs are planted very densely, with virtually no distance. Such dense planting provokes intensive growth of the stem and green mass, which, in fact, is required;
- disinfection - unfortunately, stable conditions in greenhouses are favorable not only for cultivated plants, but also for many parasites and pathogenic microflora. So disinfection with a weak solution of potassium permanganate after planting is a mandatory measure;
- watering - during plant growth, 3-4 waterings are required, but the humidity in the greenhouse should be maintained constant, at 70-80%. This article will tell you more about how often and correctly to water onions;
- fertilizing - the crop is fed 2-3 times, usually the fertilizer is dissolved in water for irrigation;
- ventilation – even in winter, ventilation is necessary. In this case, the air temperature should not fall below +10 C;
- harvesting - harvesting begins when the length of the feather reaches 25–30 cm, or as needed.
Features of the greenhouse
The main factor is the heating and lighting of the greenhouse. The material – glass, film, polycarbonate, frame – is selected depending on the purpose of the structure, the condition of the soil and other factors.
- Both the frame of the structure and the covering material may be different. However, when using them, certain recommendations should be followed.
- The wooden frame must be treated with antiseptics, primed and painted to avoid deformation.
- A metal frame is considered the best solution due to its rigidity and strength. This does not eliminate the need for periodic priming and painting to protect the product from corrosion.
This kind of work is carried out in the summer, when the greenhouse is empty or it is possible to completely remove the covering material.
- For greenhouses, polycarbonate is considered the best option: the material retains heat, unlike glass, and in terms of transparency it is not much inferior to it. This allows you to save on heating the greenhouse. Film is more often used in summer buildings, since for the winter season this material is too thin and does not withstand rain and snow.
The shape of the greenhouse is important: the length of daylight hours for plants is very significant. If snow remains on the roof of the greenhouse, you have to either switch to artificial lighting or start urgent cleaning. A structure with a round roof or a gable roof at a large angle gets rid of snow almost independently: the snow simply cannot be retained.
A gable greenhouse allows you to get rid of snow without much effort
To successfully grow onions, you need to solve 3 more problems: heating, irrigation and lighting.
- Heating – if the greenhouse is used year-round, heating devices must be installed. Their nature depends on the area of the room, financial capabilities and climatic conditions. So, a greenhouse with an area of more than 20 square meters. m. can be equipped with stationary installations - gas heaters, infrared heaters. Sometimes water heating is also found. With a small area - up to 15 sq. m, the heater can be used mobile.
It is necessary to achieve uniform heat distribution in the greenhouse. The location of heating devices is almost more important than their quality and quantity.
- Lighting – short winter days make successful growth impossible: onions need at least a 12-hour day. To illuminate a greenhouse, linear lamps with sufficient power are most often used: metal halide, fluorescent. It is recommended to avoid conventional incandescent lamps: the consumption is high and the efficiency is minimal.
Linear fluorescent lamps for greenhouses, because... they are more effective in providing constant illumination of large rooms
- Irrigation – watering is carried out manually, mechanically or using an automatic irrigation system. If the greenhouse area is large, preference is given to the latter option.
Watering is carried out only with warm, settled water. Cold water significantly slows down plant growth.
Soil Features
Onion is an unpretentious plant; it does not grow only on rocky and high-clay soils. However, it makes sense to create ideal conditions in the greenhouse to get a larger harvest.
Onions need loose, light soil - saturated with air and rich in nutrients. The first is obtained by thoroughly loosening the soil, not only before planting, but also all the time while the soil is resting in the greenhouse. The second is accomplished by applying fertilizers. A week before planting, add it to the soil at the rate of 1 square meter. m:
- near a bucket of humus or compost;
- 12 g potassium chloride;
- 20 g superphosphate.
Loosening the soil is a mandatory procedure, because... this enriches the soil with oxygen
Before planting, moisten the soil so as not to water immediately after.
A more cost-effective solution is to use racks rather than planting in the ground. A rack with a shelf width of 35 cm takes up less space, while the area for sowing remains the same. In addition, in boxes the soil warms up faster and less water is required for irrigation. It is noted that onions per feather in boxes grow faster by 5–7 days.
How to grow onions for greens in a greenhouse
There are no particular difficulties observed in the process of caring for a growing green feather. Rooting of the bulbs usually occurs within the first 10 days. Then the first green shoots appear. During this period, by changing the temperature, it is possible to regulate the intensity of onion growth. For example, if before the holidays it is necessary to “hold back its growth” a little, then the temperature is lowered, but so that it drops no lower than + 8 ° C. As the temperature rises, on the contrary, the rate of feather growth accelerates significantly. But there is a limit here too. When the temperature rises above + 25 °C, the tips of the onions’ leaves may begin to dry out, which has a negative effect on the presentation of the vegetable.
Watering
Watering is only necessary when growing onions in fairly warm conditions, when the soil shows obvious signs of drying out. It can be carried out either from a hose or from a watering can. The temperature of the water does not matter much, but it is still better to use settled water rather than ice water.
Weeding and loosening
There is no need for weeding or loosening, since the bulbs occupy absolutely the entire soil area. But periodic sampling of bulbs affected by diseases or beginning to rot is simply necessary.
Top dressing
Usually, if the feather onion was planted in soil fertilized with humus in the fall, then it does not need any additional feeding. But periodic spraying with Fitosporin will allow you to prevent possible diseases and save most of the healthy bulbs from possible infection.
Harvesting
In general, a sign that onions are ready for harvest is the length of the leaves. It should reach at least 25-30 cm. But it is better to wait for the length of the onion feathers to be from 40 to 50 cm. This will allow you to get the maximum green harvest by weight.
Comment! The length of the feathers is calculated not from the bulb, but from the surface of the substrate.
Typically in spring, the period from planting to harvest averages about 30 days. It can vary from 20 to 40 days.
The harvesting process itself consists of cutting the onion at the root along the very surface of the substrate with a sharp knife. Then a cut is made from the bulb at the very bottom. The bulb is pulled off, and a clean and dense green feather remains in your hands. The white part is cleared of the slippery film and placed in a prepared box. Each bulb is processed in the same way. The old onion is thrown onto the compost heap.
It should be noted that the yield on average ranges from 25 to 65% of the weight of the original bulbs. That is, if 100 kg of onions were planted, then you can get from 25 to 65 kg of green onions. Productivity is most determined by the number of buds in the variety used. Thus, from one square meter in a greenhouse you can get from 8 to 20 kg of early green onions.
Pests and diseases
Pest or disease infestations are much easier to prevent than to treat. And this statement is more than true in relation to growing onions. Since it only lasts about a month, no treatment makes sense. All you need is:
- sort the bulbs very carefully before planting;
- carry out the disinfection procedure before planting;
- use Fitosporin regularly;
- periodically inspect the plantings and remove any bulbs that begin to deteriorate;
- Ventilate the greenhouse regularly and use a fan to circulate air.
Features of proper care: tips for beginning gardeners
For effective crop germination, you must adhere to the following steps:
- water the plants moderately and promptly using a sprayer, as a strong stream of water washes out the seeds and nails the feather to the ground;
- loosen the soil for a full flow of oxygen;
- weed the beds;
- ventilate without creating drafts;
- apply fertilizers before planting and during onion growth;
- maintain air humidity within 70-80%.
Due to the short growing period of feathers, chemical mixtures cannot be used to control pests or diseases.
To prevent their occurrence, before planting onions in the ground in winter and at other times, the greenhouse should be disinfected. If diseased specimens are discovered during growth, they are immediately removed, and the soil under them is replaced with a new one and treated with wood ash.
Greens are a storehouse of vitamins; in addition, the benefits of onions are invaluable during the cold season, as they are natural antibiotics. How to store and grow green onions in a plastic bottle, sawdust, water without soil in winter and at the end of summer - read our articles.