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More and more vegetable growers are growing cucumbers in greenhouses. They have special climatic conditions, different from open ground. It is necessary to follow the correct cultivation technique for cucumbers in order to get a high yield of tasty and healthy vegetables. This primarily concerns the features of feeding. Cucumbers ripen quickly, not every fertilizer can be used for top dressing.
The first feeding of cucumbers after planting in the greenhouse is an important procedure that should not be neglected. With its weak root system, a green vegetable is not able to obtain the necessary amount of nutrients for fast-growing green matter, such as nitrogen, potassium and phosphorus. Insufficient nutrition at first negatively affects the growth and fruiting of cucumbers, and as a result, a low yield.
As such, feeding cucumbers in a greenhouse or greenhouse begins with preparing the soil so that the planted cucumbers, at first, until they take root well, have enough nutrition.
We prepare the soil in autumn
In order for the first feeding of cucumbers after planting seedlings to be effective, it is necessary to take care of the soil and cleanliness of the greenhouse from the fall. Disinfection of all surfaces is carried out with bleach. 10 liters of water requires 300 grams of the product. After the composition is infused, spray the greenhouse or greenhouse, including the soil. All the cracks are poured with the rest of the thick.
Before digging the soil, add humus or compost: one bucket per square of area. Since in greenhouses, as a rule, the acidity of the soil is increased, you need to sprinkle it with dolomite flour (up to 0.5 kg per square) or fluff lime.
What to do in spring
In the spring, about 7 days before planting cucumber seedlings, ammonium nitrate (30 g), potassium sulfate (20 g), superphosphate (30 g) are added as a top dressing for cucumbers for each square. After that, the soil is dug up and spilled with boiling water, adding 1 gram of potassium permanganate.
Advice! So that the soil in the greenhouse does not lose nutrients, it is covered with a film before planting seedlings.
We feed cucumbers
The first feeding of cucumbers grown in the greenhouse must be done after planting. Mullein is a good remedy. In the aisles, grooves are made, a mullein is introduced and sprinkled with soil. The mullein will not only feed the soil for cucumbers with microelements, but will also start to "burn". At the same time, it will release a sufficient amount of carbon dioxide. Cucumbers need carbon dioxide, just like humans need oxygen.
Warning! Never place the mullein near the root system of the cucumber.
The lack of carbon dioxide in the greenhouse can be replenished with dry ice. For a greenhouse of 10 squares, 200 grams is enough. Ice should be laid out in the morning at 9 o'clock. For unfolding, use stands that rise above the ground and do not reach the root system of the cucumber. Such first aid is necessary for cucumbers.
Advice! Top dressing of greenhouse cucumbers during the growing season can be performed no more than five times.
Immediately after planting in a greenhouse or greenhouse, the plants must be supported with nitrogen-containing fertilizers. During the first and subsequent feeding of cucumbers, you need to be guided by their appearance: growth, state of green mass, abundance of flowering.
Important! Fertilizing cucumbers in a greenhouse or greenhouse is applied in small quantities.
An excess of trace elements adversely affects development.
What are top dressing for?
Novice vegetable growers often wonder why else to feed the plants in a greenhouse or greenhouse, if mineral and organic fertilizers have already been introduced into it during the preparation of the soil. The fact is that the root system of cucumbers is superficial, they are not able to extract nutrients that are in the depths. Consequently, having spent the reserves stored in the surface layer, cucumbers can reduce their immunity, they will be less resistant to diseases and temperature changes.
Cucumbers grow well with high air humidity and low top dressing. Any procedures related to watering and feeding plants are carried out early in the morning, until the rays of the sun appeared on the horizon. Evening watering should be carried out after the sun sets. Otherwise, powdery mildew and anthracnose may threaten cucumbers.
Important! Top dressing and watering is carried out only with warm water.
Cucumbers are fed for the first time after planting in a greenhouse or greenhouse. But the effectiveness of feeding will be low if at the stage of growing seedlings the plants were "hungry".
When to fertilize
In general, to obtain a rich harvest of green crispy fruits, it is necessary to take into account the stages of feeding. Let's take a closer look at these activities so that in the future, when growing cucumbers, beginners do not have questions about the need for this type of work.
- You need to start feeding greenhouse cucumbers at the stage of growing seedlings. First of all, you need to prepare high-quality, nutritious soil. When and how many times to feed the seedlings of cucumbers? Twice before planting in the ground: the first time when the first true leaves appear, then after 14 days.
- Before transplanting cucumber seedlings into the greenhouse, they are fed again in about a week. Plants need to be sprayed with the nutrient to boost immunity and reduce planting stress.
- After the seedlings are planted in the greenhouse, they are fed again. You can use both the root variant and the foliar one. In addition to accelerating survival, cucumbers get an impetus to build up green mass and the appearance of embryos.
- During the period of flowering and fruit growth, fertilizers are used that do not accumulate in cucumbers.
Fertilizing cucumber seedlings
Typically, cucumbers are grown in greenhouses and greenhouses for early production. Sowing with seeds is not entirely effective. You can get seedlings of cucumbers not only in the apartment, but also in the greenhouse itself. Only the seedlings will have to be covered at night.
Attention! A 30-day seedling is considered good for planting in the ground.
The boxes are filled with nutritious soil, a small amount of wood ash is added and spilled with a hot solution, adding a little potassium permanganate. Wood ash is a source of potassium, potassium permanganate feeds seedlings with manganese and potassium. These micronutrients are essential for the successful growth of cucumbers.
How to feed seedlings after planting
As soon as the planting of cucumbers is carried out, it is necessary to support it, reduce stress. At the first feeding in the greenhouse, cucumbers are watered with superphosphate, mullein, ammonium nitrate.
There are a number of special fertilizers for cucumbers that do not contain nitrate nitrogen:
- Crystallin A;
- Humated fertilizers;
- Potassium sulfate.
Top dressing under the root
When the cucumbers are planted in the greenhouse, they usually have 3 to 4 true leaves on them. They have already used up some of the nutrients necessary for proper development while growing in seedling containers. At the time of planting, plants, like air, need nitrogen, phosphorus and potassium. It is not always possible to get them from the soil. Therefore, cucumbers need the first feeding.
What can be used when feeding newly planted seedlings for the first time:
- Cucumbers can get the necessary trace elements from such a solution. Double superphosphate (20 grams), ammonium nitrate (15 grams), potassium sulfate (15 grams) are added to a ten-liter bucket of water. The elements of the solution are thoroughly mixed until complete dissolution. This portion is enough for 15 cucumbers.
- Good nutrition is provided by Azofosk or Nitroammophosk. These mineral fertilizers contain a full range of microelements necessary for cucumbers for the first feeding after planting in a greenhouse or greenhouse. They are composed of nitrogen, phosphorus and potassium. To feed the cucumbers with such fertilizers, the following solution is prepared: clean water at room temperature is poured into a ten-liter watering can or bucket. Azofoski or nitroammofoski will need 1 tablespoon. This solution is enough to feed ten cucumbers.
Attention! Before fertilizing plantings in a greenhouse or greenhouse, the soil must be shed.
You can use such a complex fertilizer for the first feeding of cucumbers in a greenhouse and a greenhouse:
- a spoon of nitrophoska is added to 500 ml of mullein and the amount of liquid is adjusted to 10 liters;
- then add ash (1 glass). You can use potassium sulfate (50 g) + manganese sulfate (0.3 g) + boric acid (0.5 g) instead of wood ash.
The mixture is mixed well. This fertilizer is enough for 3.5 square meters.
When feeding plants at the root, try not to get on the foliage, so that chemical burns do not form on them. Use a spray can or a regular ladle.
Advice! Work with mineral fertilizers should be carried out in clothes with long sleeves and rubber gloves.
How to properly feed cucumbers, you can find out by watching the video:
Not all gardeners agree with the use of mineral fertilizers for feeding cucumbers in the greenhouse. Most often, they find a replacement for them among the organic options.
The most popular type of dressing after planting cucumbers in the greenhouse is herbal infusion. It is an excellent organic fertilizer that contains easily assimilable nitrogen.
Take equal amounts of grass and water. The infusion will be ready in 3 or 4 days. You can determine readiness by the appearance of bubbles and a sour smell. When diluted in 5 parts of water, add 1 part of the herbal infusion.
Pour under each cucumber on a pre-moistened ground. You need up to 5 liters of organic fertilizer per square meter. Some gardeners, after watering, sprinkle the soil with ash. This feeding will provide the cucumber lashes with phosphorus, calcium and trace elements.
If there are the first ovaries on the seedlings planted in the greenhouse, then it is necessary to use such organic fertilizers for feeding: mix the infusions of mullein and chicken droppings. Plants will get the right amount of nitrogen and potassium. Add 1 liter of mullein and 500 ml of chicken droppings to a ten-liter bucket of water. This composition is enough for 10 plants.
You can use an ash solution for the first feeding of cucumbers. A glass of wood ash is added to a bucket of water, mixed and the cucumbers are immediately fed.
Root feeding of plants allows you to grow a rich harvest of pimply crunchy fruits, such as in the photo.
You can feed greenhouse cucumbers both root and foliar. The choice of the first feeding option will depend on the soil temperature. The fact is that mineral and organic fertilizers are poorly absorbed by the root system in cold soil. If the soil has not yet reached the desired temperature, and the cucumbers are planted, you will have to use the foliage feeding of the plants.
For foliar dressing, you can use the same fertilizers as for watering at the root. The difference is only in the concentration of solutions: it is halved. Spraying is best done from a fine spray. The smaller the droplets, the faster the plants absorb their "vitamin" supplement. For work, they choose a day without a bright sun, so that the leaves slowly "eat". Drops in the sun can burn cucumber leaves.
Attention! In rainy weather, foliar dressing is not carried out.
In addition to liquid dressings for green mass, dusting of cucumbers with ash can be used after planting. It needs to be sifted and sprinkled on each leaf. Work is best done in the evening. In the morning, dew drops form on the plants, microelements will quickly enter the plant. This is not only a top dressing, but also protection, for example, from aphids.
About the types, forms and feeding mode of cucumbers:
If excess fertilizer has been applied ...
It is better not to feed cucumber lashes than to overfeed. Let's take a look at what cucumbers look like with an excess of any trace elements:
- If there is too much nitrogen, the formation of ovaries on cucumbers slows down. The scourges become thick, the leaves are dense and unnaturally green.
- With an excess of phosphorus, yellowness and necrotic spots are observed on the leaves. As a result, leaf fall begins.
- The presence of a large amount of calcium also affects the leaves, leading to interveinal chlorosis.
- An excess of potassium slows down the growth of a cucumber, and a lack of it leads to curling of the fruit, as in the photo.
Proper care of cucumbers, timely feeding, adherence to agrotechnical standards will delight you with an abundant harvest of crispy fruits with pimples.
Each gardener chooses for himself which feeding option he uses if cucumbers are grown in a greenhouse or greenhouse. You can combine mineral fertilizers with organic ones, or you can feed them only with organic matter. The main thing is to do everything according to the rules, observing the dosage.
If the cucumbers grow normally, then the number of dressings can be minimized.