Contents
Carbamide or urea is a nitrogen fertilizer. For the first time, the substance was isolated from urine and identified at the end of the XNUMXth century, and at the beginning of the XNUMXth century, the chemist Friedrich Wöhler synthesized it from an inorganic substance. A significant event was the beginning of organic chemistry as a science.
Urea appears as colorless, odorless crystals. As fertilizer is produced more often in granular form, the substance dissolves well in water.
Carbamide is known to all gardeners without exception. Efficiency has been proven by more than one generation of agronomists. Without being experts in the field of chemistry, most know that cucumbers need nitrogen for a full-fledged vegetation. Urea contains almost 47% nitrogen. Fertilizer can be applied as the main type of top dressing, or in combination with other types of fertilizers and top dressings.
Fertilizer from domestic producers is affordable. It is produced in granular form or in the form of tablets, which is very convenient when you need to feed only a few plants. Therefore, a good ratio of price, quality, efficiency attracts gardeners.
Signs of nitrogen deficiency
Cucumbers are everyone’s favorite vegetable. In the summer, they, along with other vegetables, are actively used to make salads. It is vegetable salad that stimulates digestion. Cucumbers can be eaten in any quantity, because they are 95% water.
Pickled or pickled cucumbers occupy a special place in cuisine. They are an independent self-sufficient dish, included in the composition of salads and soups. Therefore, every gardener wants to grow cucumbers in sufficient quantities to be enough for both food and harvesting.
Do not refuse to feed cucumbers with fertilizers. Without additional nutrition, it is impossible to grow cucumbers. If the plants lack nitrogen, then you will see it right away, because the external manifestations are very clear and understandable to any gardener:
- Slow plant growth;
- Cucumbers develop poorly, the plant looks lethargic, stunted;
- The leaves turn yellow, the shoots lighten. There is no dark green leaf color characteristic of cucumbers;
- Falling leaves at the beginning or middle of the growing season;
- If the plant does not have enough strength to form a deciduous mass, then, accordingly, ovaries will not be laid and fruits will not form;
- With a lack of nitrogen, low yields;
- The fruits become pale green;
- The growth of side shoots stops.
If there are signs of a lack of nitrogen in cucumbers, it is urgent to apply urea – the most affordable nitrogen fertilizer. The popularity of fertilizer is that it is cheap, but at the same time very effective.
Not good for cucumbers and an abundance of nitrogen in the soil. The plant grows only green mass. The leaves become large, rich green. Fruits are not formed or grow underdeveloped, twisted.
However, some features of urea should be borne in mind. When applied to the soil, bacteria affect the fertilizer, urea decomposes and releases ammonium carbonate. Therefore, if the fertilizer was embedded in the soil shallowly, then a significant result from its use should not be expected. And this does not mean at all that urea can be used exclusively in greenhouses and greenhouses. There will be benefits from top dressing, but it is required to be embedded in the ground in order to minimize the loss of ammonium carbonate.
Carbamide is able to acidify and alkalize the soil. To avoid such an effect on acidic soils, add 200 g of chalk per 300 g of urea.
Feeding cucumbers with urea
For the entire growing season, it is recommended to feed the cucumbers about 5 times in order to get an abundance of everyone’s favorite vegetable for salads and preserves. With a rich harvest, it is equally important that the grown cucumbers are even and healthy, without external flaws. Therefore, it is important to use urea fertilizer for cucumbers in time. She, like a fertilizer, works very well on cucumbers. There are several stages of feeding cucumbers:
- Before planting, you can add urea in the process of digging the soil. 1,5-2 weeks before planting cucumbers, fertilize the beds, try to close up its granules deeper (7-8 cm). Such introduction of carbamide is carried out either in autumn or in spring, combining the process with digging the earth. Application rate: 5-10 g per 1 sq. m of soil. It is advisable to divide the application into 2 doses: autumn and spring;
- Immediately before planting the seeds, fertilizer is applied to the wells. It is undesirable that it come into contact with the seeds, otherwise there will be a delay in the germination of the seeds. Urea (4 g per well) sprinkle lightly with soil, and then plant the seeds;
- All subsequent top dressing is best done by adding a solution of urea. After the sprouts have hatched and grown to the first true leaves, you can water them with a solution. Dissolve 30 g of fertilizer in 10 liters of water;
- If the cucumbers were grown in seedlings, then urea fertilization is carried out no earlier than 2 weeks after planting in the ground, when the adaptation period has passed and the plants begin to grow. At this time, the flowering of cucumbers begins. Top dressing with urea lays the future abundant fruiting. It is advisable to add 50 g of superphosphate when feeding;
- The next feeding with urea is carried out at the beginning of fruiting. So that it is not a burden for the plants to increase the fruit mass. In conjunction with urea, superphosphate (40 g) and potassium nitrate (20 g) work well;
- The next time the application of urea is shown at the stage when cucumbers bear fruit as much as possible in order to increase fruiting, prolong it and help the plant. Dissolve 13 g of urea, add potassium nitrate (30 g), mix well in 10 liters of water and water the plants;
The root application method works best in warm weather.
Foliar top dressing of cucumbers with urea
Foliar feeding of cucumbers is a good help in their painful or weakened condition, when the ovaries and leaves fall off. The effectiveness of foliar feeding with urea is especially increased under adverse natural conditions: during a period of drought or during a cold snap, when the absorption capacity of the roots is reduced.
The benefits of foliar top dressing:
- The use of urea for foliar feeding can significantly extend the fruiting period of cucumbers;
- Nitrogen is immediately absorbed by the leaves and therefore its action occurs almost immediately, and not stretched over time, as happens with the root method of application;
- The method is very economical. You spend the solution aimingly, on a specific plant. Fertilizer does not move to the lower soil layers, it is not affected by other elements, it is not absorbed by weeds;
- Foliar top dressing can be carried out at any stage of cucumber development.
The foliar application method is very effective. Spraying with urea can also be used as a preventive measure in the fight against pests and diseases of cucumbers. Foliar feeding increases the immunity of plants.
When preparing a solution for foliar spraying of cucumbers, observe the dosage and processing conditions:
- Dissolve 5 tbsp. l. urea in a bucket of water. Do not exceed the norm, as there will be no benefit, but only harm in the form of burnt leaves. For young plants, the dosage can be slightly adjusted downwards so that the tender leaves of the sprouts are not affected;
- Do not spray plants in the rain. Cucumbers growing in open ground, process early in the morning or in the evening, when there is no direct sunlight;
- In the greenhouse, cucumbers can be sprayed in any weather, but so that there is no burn from the sun’s rays;
- Combine feeding cucumbers with urea with other elements necessary for plant nutrition;
- Spend not only foliar top dressing of cucumbers, but also root. If you apply fertilizer for cucumbers only in a foliar way, then you will have to do it quite often: once every 1 weeks, otherwise the benefit will be barely visible.
To be sure of the amount of fertilizer applied, remember that:
- In 1 st. l. 10 g of urea is placed;
- Matchbox without a slide – 13 g;
- A glass with a volume of 200g holds 130g of fertilizer.
Follow the instructions, do not add too much urea, so as not to be left without a crop.
Conclusion
Growing your favorite vegetable is easy. Support the plant with urea and other necessary elements. And you will have another question: what to do with the harvest? Urea is an organic fertilizer for cucumbers, which is in a convenient form for use. When it is applied, cucumbers receive the required nitrogen rate, which is so necessary for growth and fruiting. When using fertilizer for foliar spraying, you can significantly extend the growing season of plants and get wonderful fruits for as long as possible.