Foliar dressing of fruit and vegetable crops - how to avoid plant starvation

Foliar dressing of fruit and vegetable crops - how to avoid plant starvation

How to understand what is missing for the normal development of a particular culture

Nutrients can be applied to the leaves as a powder or solution. This is best done after rain or early in the morning when dew is on the leaves. However, dusting is less efficient than spraying, in which fertilizers are consumed 2-5 times less. In the practice of gardening, spraying is used much more often, especially when microelements are added that are required in very small quantities.

In an area where a lack of nutrients is observed annually, fertilizers, regardless of the culture, are best applied to the leaves in advance, without waiting for the visible manifestation of signs of plant starvation. Spraying is advisable in the evening so that the solution does not dry out immediately, but is absorbed into the leaves. If precipitation falls within 6 hours after spraying, the fertilizing should be repeated.

In most plant species, it is necessary to spray the upper and lower surfaces of the leaves, since through the lower part the nutrients are better absorbed. When processing crops, the dose and concentration of the fertilizer solution should be strictly observed. In order to avoid burning the leaves, it is necessary that the solution is distributed evenly, without forming large drops. Therefore, it is advisable to use sprayers that form a thin cloud, and make sure that the total solution does not reach a level at which leaf burns are possible.

Vegetable crops

The consumption rate of working fluid for vegetables, melons and gourds, potatoes is no more than 1 liter, strawberries - 1-2 liters per 10 m², gooseberries - 1-1.5 liters, currants - 1.5 liters, raspberries - 1.5-2 l per bush. For trees under 5 years old, 2-3 liters of solution are required, for fruit-bearing trees - 6-10 liters per tree.

Vegetable nutrients should be diluted with 10 liters of water. The consumption rate of the working fluid is 1 liter per 10 m² of landings.

Eggplant. Spraying with manganese sulfate (5 g) increases yields by 30% and increases the vitamin C content to 5.7 mg /%.

Zucchini. Twice spraying with urea (1 tablespoon) with an interval of 10-12 days during the filling of the fruits helps to increase the duration of the fruiting phase and the general strengthening of plants.

White cabbage. Spraying with boric acid (10 g), ammonium molybdate (10 g), manganese sulfate (5 g) and potassium iodide (0.1 g), as well as copper sulfate (5 g) and zinc sulfate (5 g) enhances plant growth, accelerates ripening. Boron and molybdenum increase the density of the heads of cabbage. The yield will be higher if, along with the treatment of seeds with manganese sulfate (10-20 g) during the growing season, 2-3 times the treatment of plants with the above fertilizers is carried out. Spraying with a 0.25% solution of ammonium nitrate is also effective at least 4-6 times during the growing season.

Cauliflower. Spraying with a mixture of boron and molybdenum (2.5 g each) in the phase of three to four leaves and treating the plants with ammonium molybdate (10 g), manganese sulfate (5 g) and zinc sulfate (5 g) in the head tying phase accelerates the maturation of the heads by 7 -10 days. The highest yield is obtained by feeding with manganese, and the best yield of heads with molybdenum.

Potatoes. Spraying with manganese sulfate (10 g) or in combination with superphosphate (20 g), zinc sulfate (10 g) or copper sulfate (10 g) increases the content of dry matter and starch in tubers, increases the yield by 50%.

Bulb onions. Spraying with boric acid (5 g) increases the yield by 23%. The effect of top dressing in dry hot summers is higher than in cold and rainy summers.

Carrot. During the growing season, spraying with boric acid (10-20 g per 10 l of water), and at the end of summer - with a 0.4% solution of manganese sulfate at least three times increases the yield, increases the sugar and carotene content in root crops. Treatment of plants with potassium chloride (20 g) is also recommended. Spraying with copper, zinc and manganese sulfate (10-20 g per 10 liters of water) increases the yield of root crops by 20-40%.

Cucumbers. Presowing soaking of cucumber seeds in a solution of zinc sulfate (5 g) in combination with foliar feeding with the same substance (2-3 g) increases the yield by 30%. Spraying with ammonium nitrate (40-50 g) in the flowering and fruiting phase improves the nitrogen nutrition of plants. Urea treatment (1 tablespoon) accelerates the onset of fruiting. Top dressing with boric acid (5 g) and manganese sulfate (2 g) is effective. The elements of mineral nutrition that penetrate the leaf tissue stimulate the development of the reproductive organs of the plant, prevent the fall of female flowers and lengthen the fruiting period. It is advisable to fertilize with an interval of 12-15 days. Of interest is the treatment of plants with a mixture containing 4-5% superphosphate, 0.5% potassium chloride, 0.1% magnesium sulfate and 0.03% boric acid. The mixture is prepared immediately before spraying, and the superphosphate extract is done in a day. When growing cucumbers in greenhouses, for normal development and long-term fruiting, foliar dressing must be carried out at least 2-3 times a month, starting from the fifth week after planting. Approximate doses of mineral fertilizers: potassium sulfate - 7-8 g, urea - 10-20 g, ammonium nitrate - 5-7 g and simple superphosphate - 10-12 g per 10 liters of water.

Pepper. Spraying with manganese sulfate (3 g) and copper sulfate (5 g) increases the yield by 25-45%.

Beetroot. Spraying with potassium chloride (10-15 g) in combination with boric acid (5 g) or urea (1 tablespoon) promotes the development of the leaf surface and strengthens the plants. Top dressing with copper, zinc and manganese sulfates (10 g per 10 l of water) increases the yield by 20-40%.

Tomatoes. Soaking seeds in a solution of copper sulfate (2 g) and foliar feeding of seedlings with brown (2 g) or copper sulfate (0.5 g) doubles the fruit yield. Spraying with superphosphate (10 g), potassium chloride (8 g) and boric acid (0.5 g) in the second - fourth leaf phase significantly strengthens the plants. A bucket of nutrient mix is ​​sufficient for 200 plants. Spraying with urea (1 tablespoon) is useful for low leafy plants and lagging behind in growth at a consumption of 10 liters per 10 plants. Effective processing of tomatoes in the phases of budding, flowering and fruit setting on the first brush with a mixture containing 0.5% ammonium nitrate, 2% superphosphate and 1% potassium chloride, or manganese sulfate (5 g). When growing tomatoes in greenhouses, an important place is given to foliar feeding with microelements, which are especially effective during periods of poor illumination, at low air temperatures and a poorly developed root system. They are held once a month. For this, 0.8-1 g of boric acid, 0.7-1 g of manganese sulfate, 0.2 g of copper sulfate, zinc sulfate, cobalt sulfite and 0.1 g of ammonium molybdenum are dissolved in 1 liter of water. For 10 liters of water, take 10 ml of this solution. Spend 2.5-3 liters per 10 m². In the phase of mass flowering, tomatoes are sprayed with a solution of magnesium sulfate (10-12 g), since the plants are especially sensitive to its lack. Of mineral fertilizers, it is effective to give monthly potassium sulfate, ammonium nitrate and simple superphosphate (9-10 g per 10 liters of water).

Berry crops

Berry nutrients should be diluted with 10 liters of water. The consumption rate of the working fluid on plantings of strawberries is 1-2 liters per 10 m², gooseberries - 1-1.5 liters, currants - 1.5 liters, raspberries - 1.5-2 liters per bush. Before flowering, berry bushes are useful to lightly sprinkle with a solution of chicken manure (50 g per bucket), and 5-15 days after flowering, feed with urea and superphosphate.

Strawberries. Spraying with ammonium molybdate (1.5-3 g), 0.1% borax solution (10 g), solutions of zinc sulfate (1-2 g), boric acid (1-3 g), as well as a mixture of boron and zinc in the budding and flowering phase, it increases the yield by 15-20% and improves the quality of the berries. Treatment of strawberries with urea (30 g) in August contributes to the better setting of flower buds for the future harvest.

Gooseberry. Spraying with zinc sulfate (2 g), boric acid (2 g) and urea (1 tablespoon) during budding and flowering strengthens the plants and increases the yield by 10-20%.

Black and red currants. Spraying with copper sulfate (1-2 g), boric acid (2-2.5 g), manganese sulfate (5-10 g), zinc sulfate (2-3 g) and ammonium molybdate (2-3 g) is carried out in addition to the main fertilizers in June. When spraying currants with urea (1 tablespoon), it is useful to add 1-2 matchboxes of superphosphate to the solution. During flowering, it is recommended to spray currants 2-3 times within three days with a 0.1% borax solution (10 g).

Fruit crops

For fruit crops, nutrients should be diluted in 10 liters of water. The consumption rate of working fluid for one tree up to 5 years is 2-3 liters, for a fruit-bearing tree - 6-10 liters.

Apple tree, pear, plum, cherry. Foliar dressing of fruit crops improves the development of trees, increases the marketable quality and quantity of fruits, contributes to the accumulation of organic matter reserves in tissues, and increases frost resistance. In the spring, 10-15 days after flowering, trees are sprayed with a 0.3% urea solution, in June - July and autumn - with urea (0.6%), double superphosphate (2-3%) and sulfate salts (1% ). This increases the yield of fruits. Spraying the crown with urea after the petals have fallen off (apple tree 20-40 g, pear 10-20 g, plum and cherry 50-60 g) protects the leaves from burns. For 1 g of the drug, add 1.4 g of lime. Treating trees with zinc sulfate (3-5 g), manganese (5-8 g) and boric acid (10-20 g) improves the process of photosynthesis and reduces the degree of fruit shedding. A mixture of copper sulfate (2-5 g), boric acid (5-10 g) and manganese sulfate (1-10 g, depending on the age of the tree) strengthens fruit crops, increases their resistance to pests. Spraying with zinc sulfate (4-5%) during the dormant period eliminates zinc starvation of crops. For better growth of apical buds, an apple tree, a pear and a plum in the pre-growing season are sprayed with a solution of copper sulfate at the rate of 1 g per 10 liters of water. The same preparation (1-10 g, depending on the age of the tree) can be sprayed on foliage after the flower petals have fallen off. This improves the commercial quality of the fruit.

Top dressing with superphosphate (30 g) or potassium sulfate (20 g) in August-September increases frost resistance. The amount of dressings depends on the yield: 2-3 - with an average and 3-4 - with a high one. To enhance the nutrition of trees, it is useful to add nitrogen, phosphorus and potassium to trace elements, that is, 20 g of ammonium nitrate or 15 g of urea, 100 g of superphosphate, 20-30 g of potassium chloride or 30-40 g of potassium sulfate. So that the leaves do not turn yellow prematurely, and the shoots do not die off, fruit crops are sprayed with a solution of ferrous sulfate at the rate of 5 g per 10 liters of water. To reduce the development of fruit heart rot, plants are sprayed with boric acid (2 g per 10 l of water).

Flower crops

Spraying flower seedlings with a mixture of ammonium nitrate (7 g), superphosphate (10 g) and potassium salt (4 g) strengthens the plants and improves flowering. The nutrient mixture in the indicated doses is diluted in 10 liters of water.

Asters and phloxes. Spraying plants with a mixture of boric acid (2 g), manganese sulfate (3 g) and zinc sulfate (3 g) increases the seed productivity of flower crops by 25-40%.

Carnation. Spraying the leaves with potassium nitrate or calcium (20 g) increases the strength and thickness of the stem, prevents the calyx from cracking. Processing is carried out after 7-10 days. 4-5 weeks after planting the cuttings, the plants are given weekly foliar feeding with a solution of urea (50 g) and mullein (1:10).

Dahlias. Spraying with boric acid (5 g) and potassium permanganate (2 g per 10 l of water) favorably affects the development of flowering plants. Top dressing is given three times (before mass flowering) in the evening hours with an interval of 15-20 days.

Gladioli. Spraying the leaves with a weak solution (5 g each) of superphosphate, ammonium nitrate and potassium chloride promotes the growth and development of plants. Processing is carried out with the development of the third and sixth leaves, before flowering, during the formation of the peduncle and twice when inflorescences appear. With a lack of calcium, spraying with calcium nitrate (15-20 g) is effective 10-14 days before flowering.

Roses. From the beginning of blooming and during the period of mass flowering, spraying with iron chelate (10 g) gives good results. Spraying with a mixture of urea (25 g), manganese sulfate (3 g), zinc sulfate (2.5 g), boric acid (2 g), ferrous sulfate (3.5 g) and copper sulfate ( 1 d).

Lilac. Spraying seven-year-old bushes 3-4 times with 1% urea solution every 7-10 days, starting from the budding phase (mid-June), increases the number of flower brushes by 70%.

Starvation can also be caused by damage to plants by pests and diseases. However, the correct application of fertilizers contributes to the growth of crop yields, increases their resistance to harmful influences and creates unfavorable conditions for pests and diseases. Foliar dressing accelerates the growing season, which disrupts the synchronization of the life cycles of the development of plants and harmful objects, reduces the possibility of damage to crops and leads to a reduction in the fertility of pests. Top dressing helps to increase the thickness of cell walls, cuticles and epidermis, change the osmotic pressure of cell sap in plants, which also increases their resistance to damage, especially by sucking insects.

There is information about the positive effect of foliar feeding on beneficial invertebrates, ground beetles, spiders, cows, rove beetles and others, the population density of which doubles in 7-10 days after spraying.

If crops are sprayed only with nitrogen fertilizers, pests become widespread, since this lengthens the growing season and more water is made to plant tissues. Phosphorus and potash fertilizers accelerate the development of plants, as a result of which their attractiveness for the spread of aphids is reduced.

We wish everyone success in the fight against plant starvation and in the battle for the harvest!

Gennady Vasyaev,
Associate Professor, Chief Specialist of the North-West Scientific and Methodological Center of the Russian Agricultural Academy,

Olga Vasyaeva, amateur gardener

Agrochemical properties

MoeChevin is a highly concentrated, ballastless nitrogen fertilizer. In him contains 46.2% nitrogen in amide form, agronomically effective fertilizer... Differs in a number of valuable qualities:

  1. A high concentration of nitrogen is combined with a slight solubility in water, but the risk of leaching into the lower soil horizons is small.
  2. High mobility combined with slow degradability in the soil
  3. In terms of nitrogen content, urea (100 kg) is equivalent to sodium nitrate (300 kg) or ammonium sulfate (225 kg)
  4. Urea has significantly less acidifying effect than ammonium sulfate
  5. On acidic light soils (sandy loam and sandy), urea is noticeably better than ammonium nitrate
  6. The absence of Cl and SO4 has a beneficial effect on the rate of nitrification in the soil
  7. Significant crop increases are provided on irrigated land
  8. Possesses favorable properties for foliar feeding.

Together with a beneficial effect, there are cases of weak impact:

The main reason is how urea is converted in the soil. When the medium is alkaline, ammonium carbamate decomposes rather quickly into CO2 and ammonia. In close contact with sprouts, the harmful effects of ammonia are observed. On alkaline soils, the negative impact is most pronounced.The most vulnerable plants are also affected. But if urea is introduced in advance, this adverse effect should be eliminated.

It is also important to introduce urea in advance, since biuret is formed during its granulation.which can harm plants. If the biuret content exceeds 3%, then the plants will be inhibited. By applying fertilizer 10-15 days before sowing, this problem is eliminated (biuret has time to decompose).

It is undesirable to apply urea when there are high fertilizer concentrations in direct contact with the seeds, since ammonia can have a harmful effect. Of course, it all depends on the characteristics of the plant's root system. With a developed system, fibrous, with adventitious roots, the harmful effect is not so noticeable. For example, a beet has only one root (tap root), and its dying off leads to the death of the entire plant.

However, studies have shown that when potash fertilizers are applied in close contact (not uniform distribution, but directly next to urea), the negative effect is eliminated, and the effectiveness of the fertilizers increases. The localization of the full fertilizer combination (NPK) near the sown seeds gives a noticeable advantage over the usual uniform distribution of fertilizers throughout the soil mass.

With a low value of the urease enzyme in the soil, which is extremely rare, urea gives low results. Then it is necessary to apply the appropriate organic fertilizers.

  • The acidifying effect on the soil is weaker than that of ammonium sulfate and other ballast ammonia fertilizers
  • On light acidic soils - an effective form of nitrogen for plants sensitive to high acidity
  • With a high concentration of fertilizer near the sown seeds, a sharp decrease in germination. Application of potash fertilizers in close contact eliminates the negative effect
  • Local application of urea together with the full combination of NPK gives better results than uniform distribution
  • With a low value of the urease enzyme in the soil, it is necessary to apply organic fertilizers.

The use of potassium monophosphate to increase yields

To increase the productivity of crops grown, gardeners periodically add nutrient mixtures to the soil. Thanks to their performance characteristics, the soil is enriched with useful macro- and microelements and becomes fertile.

As a result, agricultural and ornamental plants develop a powerful root system, their resistance to unfavorable environmental factors increases, and the palatability of fruits improves. One of these effective drugs is potassium monophosphate.

It is used in strict accordance with the instructions for use.

Description and chemical composition

Potassium monophosphate as a fertilizer is presented in specialized outlets in the form of a colorless crystalline substance, which is almost immediately absorbed by all plant crops without exception. Chemical formula - KH2PO4.

The agrochemical does not contain toxic components (chlorine, sodium), heavy metal salts, it is easy to work with. When dissolving, no difficulties arise.

If we compare the remedy with chloride and potassium sulfate, as well as potassium nitrate in terms of the amount of potassium, it significantly surpasses them. But in terms of phosphorus it is inferior to superphosphates.

The active ingredients of the drug are potassium (33%) and phosphate (50-55%). After application, there is a manifold increase in the yield of fruit and berry plants, the content of sugar and useful elements in them, the period of flowering of ornamental plantings is extended. Feeding with this nutrient composition can be done not only in the open, but also in closed ground.

Forms of issue

Mineral fertilizer potassium monophosphate, which contains phosphorus and potassium, is actively used in small areas and in large farms. The agrochemical can be purchased either in a plastic bag weighing 500 g or in a large bag weighing 25 kg. Due to its relatively low cost, the drug is used quite actively and almost everywhere.

In gardening shops, you can also buy a mineral complex for a placer. But for long-distance transportation, the best option would be potassium monophosphate in packaged packaging.

Advantages and disadvantages of the tool

Among the positive characteristics of the mineral fertilizer, Potassium Monophosphate, gardening enthusiasts note:

  • Fast absorption into the ground: crops begin to assimilate it almost instantly.
  • The absence of harmful components in the composition, provoking negative consequences for plantings.
  • The ability to effectively moisturize dried soil.
  • This is the optimal solution for saturating all indoor plantings with nutrients.
  • An increase in the number of shoots in young plantings.
  • Abundant and long-lasting flowering.
  • Possibility of combining with pesticides.
  • Does not increase the acidity of the soil.
  • After using it, no side effects are observed.
  • When preparing the working solution, it does not form a precipitate.
  • There is a possibility of re-feeding in 2-5 days.
  • The powder is not hygroscopic and does not cake.
  • Raising immunity in plant organisms against powdery mildew damage. Fungal disease manifests itself in the form of a white coating with drops of moisture.

But despite the list of strengths of fertilizer, it has its drawbacks:

  • Inability to accumulate in the ground, as it quickly decomposes.
  • Not suitable for pre-winter crop preparation: the nutrient mixture is not stored in the ground.
  • Not only crops feed on this mineral composition, weeds also use it.
  • Cannot be combined with preparations containing magnesium and calcium.
  • Not suitable for feeding slowly developing flowers (orchids, gloxinia, azaleas, etc.), since it is too active.
  • Due to the instability of the substance in air, the working fluid should be used almost immediately.
  • May cause excessive tillering.

Fertilizer scope

Taking into account the individual characteristics and the principle of action of the mineral fertilizer, it can be used for:

  • feeding young plants in season with favorable weather. If the year turned out to be rainy and cold, it is more advisable to use Kornevin for better root formation.
  • effective flowering and solving problems with ovaries, which, with a lack of nutrients, begin to fall off
  • increasing the productivity of agricultural crops
  • long and abundant flowering, which is especially important for indoor flowers and grown in open areas
  • carrying out emergency foliar feeding of flowers, in which the edges of the leaves began to curl down, wrinkle, change their color to brown.

For a drug to be effective, you need to know how to use it.

For tomatoes

Tomatoes are fed 2 times per season, the interval between procedures is at least 14 days. The working solution is prepared 0.15%, where 15 g of the product is used per 10 liters of water. The consumption of such a liquid is 1 bucket per 4 bush. In favorable years, the interval between treatments is best done in 3 weeks. Vegetable leaves are sprayed with a 0.02% solution between main treatments.

For greenhouse and open field cucumbers

For this culture, potassium monophosphate is used as for tomatoes. Depending on the state of the developing fruits, irrigation is done with a solution with a concentration of 0.02%. With normal development, the cucumber has the correct shape, where the tip is slightly thinner from the petiole.

You can determine the lack of potassium in a culture by its pear-shaped or curved appearance. For cucumbers, foliar dressing is a priority, rather than watering with nutrient compositions.

After applying the working solution, at least 1.5-2 weeks must pass before using the mineral complex again.

For potatoes, root vegetables, onions, garlic

It is more rational to carry out processing with this fertilizer on a leaf.

If watering at the root, there is a high probability of excessive growth of the root system due to loss of mass, taste, variability of root crops and a decrease in their number.

TOthe concentration of the working solution is 0.02-0.05%, the frequency of fertilizing procedures is two per season. Similar measures are provided for saturation of other root crops and edible bulbous plantations with potassium monophosphate.

For fruit and berry crops

Unlike other crops, it is more efficient to use fertilizing irrigation here. It is necessary to carry out unscheduled procedures (emergency) on the crown only after heavy precipitation and during the harvest season. Only the vegetative organs of plants are sprayed, it is especially important to treat the lower leaves with a large amount of solution.

It is recommended to apply fertilizer under the root on pre-moistened soil 2 hours after irrigation. To avoid the loss of the working solution, adult garden plantings are treated with a working liquid prepared at the rate of 20 g of mineral fertilizer per 10 liters of water. A similar water-mineral solution is used for grapes.

For flowers

Top dressing of ornamental plants is done even before the buds begin to bloom and during the period of abundant flowering.

In favorable years, in order to speed up the flowering process, the sprouts are processed when 3-4 true leaves appear. The working fluid is prepared with a concentration of 0.05%, consumption per 1 sq. m is 3-4 liters.

At the stage of active vegetation, a 0.07-0.1% solution is used, and spraying on the leaf is carried out with a liquid of 0.02%.

For feeding petunias when 2-3 leaves appear, the fertilizer is diluted at the rate of 5 g of the drug per 10 liters of water. 10 days after transplanting to a permanent place, the concentration of the solution is increased to 7 g per 10 l of water.

Instructions for use

The recommended time for fertilizing or leaf spraying is morning or evening. If procedures are carried out during the day, the active substances will evaporate in the sun.

Spraying should be done before a wet visual film forms on the leaves of the plant. But it is impossible to allow the drops to roll down.

The dosage of the substance used must be in strict accordance with the instructions for use.

Despite the harmlessness of the drug, when working with it, compliance with safety rules reduces the risk of adverse reactions. It is necessary to store mineral fertilizers in a well-ventilated area in an airtight container.

Use protective gloves, goggles and a respirator when diluting the substance. If the solution accidentally gets on the skin or mucous membranes of the eyes, rinse them with plenty of water.

When the substance enters the stomach, rinsing is done.

Plant feeding methods

Fertilizing watering with a solution of 15-20 g of the preparation and 10 l of water is carried out at the initial stage of vegetative growth of grown vegetable crops.

Consumption per 1 m2 is 3-5 liters, and after the formation of 3-4 leaves, this volume increases to 10 liters. For the treatment of fruit trees and bushes, the content of active components is increased to 30 g per 10 liters of water.

For feeding greens, 2-3 liters of working fluid are consumed per 1 m2.

Processing of garden plants on a leaf is carried out in the evening hours, it is better to do this after rains. Scheduled irrigation is carried out with a solution that is diluted taking into account 2 g of fertilizer per 10 liters of water.

Compatibility with other types of fertilizers

Monopotassium phosphate is not recommended to be used simultaneously with agrochemicals containing magnesium and calcium. But it is allowed to jointly use this mineral fertilizer with nitrogen-containing compositions.

For greater efficiency of the drug, it is better to introduce nitrogen 2-5 days after the treatment of the grown crops with the first feeding option. Use with the rest of the formula is beneficial.

Existing analogues

If you don't have potassium monophosphate at hand, you can replace it with superphosphate, which contains a small amount of nitrogen, which does not cause a rapid growth of green mass, and phosphorus 16-20%.

Potassium nitrate, containing 13% nitrogen and 44% potassium, is actively used in horticulture and horticulture. As a result of its use in plants, the protective forces increase, the taste and marketability, and the shelf life of the crop improve.

Potassium monophosphate has earned its popularity due to its high performance characteristics. The mineral composition has a beneficial effect on all agricultural and ornamental plants. But in order to avoid the appearance of negative consequences, it should be applied according to the manufacturer's instructions.

A step-by-step guide to using urea in the garden

Hello. I want to talk today about urea (it's urea or urea). It is a granular fertilizer with a high nitrogen content. Its use is of great benefit to plants, and I want to share with you why urea is needed in the garden.

I will share the feeding methods (root and foliar), I will also tell you about the features of the use of carbamide, how to deal with possible difficulties with it: pests, diseases. And if you follow the recommendations, your garden and vegetable garden will be blooming, fruitful to the envy of your neighbors.


A substance such as boron is necessary for plants in order to supply the root system with oxygen as much as possible. Its absence significantly reduces the level of calcium intake to the plant organs.
In order to always have a blooming, beautiful garden, and a generous harvest in the garden, in the arsenal of any gardener and gardener there is one necessary tool with boron content.

The use of boric acid in the garden and vegetable garden.

Thanks to top dressing, which contains boric acid, plants become more resistant not only to diseases, but also to unfavorable weather conditions.
Experts note that thanks to boric acid, the yield increases by an average of 20%, or even 25%.
Especially, such high rates for cucumbers, tomatoes, cabbage.
Seeds are treated with boric acid before planting - they are soaked for 12-24 hours (0.2 g of boric acid is diluted in a liter of water).
Boric acid is applied directly to the soil before planting seedlings or seeds (2 g per 10 liters of water).
Boric acid is sprayed on the leaves (5 g per 10 liters).
In addition to pure boric acid, such ready-made fertilizer as borosuperphosphate is also used: granular or double.
Immediately before sowing, it is advisable to soak the seeds for a while in a solution with boric acid.
By doing this, you can speed up the germination process of your seeds. Usually, the seeds of vegetables such as onions, tomatoes, carrots or beets should be soaked for 24 hours. But, for example, zucchini, cucumbers, cabbage - as little as possible, twelve hours will be enough for them.

For the main introduction of microfertilizers into the soil, before planting seedlings or germinated seeds of flowers, fruit or berry crops, dilute two grams of boric acid in ten liters of water and water the soil abundantly with the following calculation: a diluted composition of ten square meters.
The use of boric acid for flowers gave a very good effect.
It needs to be added to soil with a lot of peat, because it is too poor in boron. Flowers such as violets need it.
Boron assists in the rapid absorption of calcium and abundant bud formation. For foliar dressing, use a 0.1% solution of boric acid (10 g per 10 l).When foliar top dressing with boron together with other micronutrient fertilizers, the concentration of boric acid is reduced by 2 times (0.5 g per 1 liter). The solution is sprayed on plants in the budding and flowering phase.

Roses. Spring spraying with a solution of boric acid in a proportion of 10 g per 10 liters gives very good results. For the prevention of fungal diseases, cuttings of roses are immersed for 2-3 minutes. in a solution of boric acid (20 g per 10 l of water).

Gladioli. A solution of boric acid (2 g per 10 l of water) is used to feed gladioli in the 3-4 leaf phase and during the flowering period to obtain larger corms.

Dahlias. Spraying with boric acid in a mixture with potassium permanganate (5 g + 2 g per 10 l of water) has a beneficial effect on the development and flowering of plants. Top dressing is done 2-3 times before mass flowering in the evening with an interval of 15-20 days.

It was also noticed that boric acid had a very good effect on roses, and their resistance to fungal diseases increased. Boric acid in the garden and in the garden is practically one of the best remedies today.

Top dressing at the root.
Boric acid solution: 0.1-0.2 g of boric acid per 1 liter of water. It is used only in cases of severe starvation or a well-known lack of boron in the soil. Plants are pre-watered with plain water to avoid chemical burns of the roots. Usually used on seedlings of flowering plants growing on sod-podzolic soils or in a mixture of peat and sand.

Boric acid dissolves easily only in hot water! always first dilute the sample (sachet) in 1 liter of hot water, then bring to the required volume with water at room temperature.

Strawberries: Signs of Boron Deficiency:
curvature of leaves and necrosis of the edges. Fertilizing with boric acid significantly increases the yield and improves the taste of berries. In early spring, plantings are spilled with a solution of boric acid with the addition of potassium permanganate (1 g of potassium permanganate, 1 g of boric acid per 10 liters of water), the consumption is about 10 liters per 30-40 bushes. It is useful to carry out foliar feeding with a solution of boric acid (5 g per 10 l of water).

Before flowering, when the plants have put forward the buds, carry out foliar feeding with a solution (2 g of boric acid, 2 g of manganese, 1 glass of sifted ash per 10 liters of water). Make an extract from the ash in advance: pour a glass of ash with a liter of boiling water and insist, stirring occasionally, for a day, then strain through cheesecloth - and the infusion is ready.

Tomatoes: Signs of Boron Deficiency
Blackening and dying off of the growth point of the stem, rapid growth of new shoots from the root, while the petioles of young leaves become very brittle. On fruits, usually in the area of ​​the apex, brown spots of dead tissue are formed. As a preventive measure, soaking the seeds in a solution of boric acid (0.2 g of the drug per 1 liter of water) for a day or in a solution of micronutrient fertilizers containing boron helps.

Before planting seedlings, add boric acid or boron fertilizers to the soil (optional on cultivated soils). Do not forget about foliar dressing before flowering (10 g of boric acid per 10 liters of water). It is possible to use foliar dressing of the same concentration in the green fruit phase to accelerate ripening and accumulation of sugars in the fruit.

Signs of boron deficiency: the appearance of chlorotic spots between the veins of the leaf blades, which gradually grow, the absence of normal ovaries on the hands (hummocking). A new seedling dies within a year or 1-2 years after planting in a permanent place. Even a single treatment during the budding period, due to the preservation of flowers and less shedding of the ovaries, increases the yield by more than 20%. Taking into account the peculiarities of grapes, add zinc salts to boric acid (10 liters of water, 5 g of boric acid, 5 g of zinc sulfate).

If the fruits of zucchini or zucchini rot, if the tomatoes in the greenhouse are under stress from the heat, if the fruits of the pepper and eggplant are not set, if there are few ovaries on the cucumbers, make a boric acid solution and spray the plants.

Foliar dressing of sunflower with micronutrient fertilizers

Sunflower foliar feeding

Foliar top dressing of sunflower with micronutrient fertilizers plays an important role in increasing yields, since conventional organic or mineral fertilizers cannot independently provide plants with normal growth and development. The use of micronutrients is especially important in the so-called critical phases of crop development, when it is necessary to provide a balanced nutrition of sunflower plants with microelements in order to stimulate the formation of roots and the formation of baskets, which ultimately will affect the increase in productivity.

It is recommended to carry out foliar feeding of sunflower twice a season: during the period of intensive plant growth (phase of 4-12 leaves) and at the beginning of the budding phase. During the first application of micronutrient fertilizers, sunflower is especially acutely in need of nitrogen, boron, phosphorus, potassium. These microelements in the first half of the growing season are very quickly absorbed from the soil, this is especially evident with intensive technology of growing crop hybrids.

To compensate for the lack of vital microelements in the first critical period (before the beginning of budding), it is recommended to carry out foliar feeding of plants with a combined mixture of Nanit Master + Nertus Bor + Humate Bio + Urea (check with the manager for the exact norms). This helps relieve stress from herbicidal effects, stimulates the development of the root system, the laying of reproductive organs, increases resistance to diseases, creates conditions for increasing yields by about 10-15%.

Hanit Master provides plants with vital nutrients. It contains a high composition of phosphorus in three forms at once: phosphate, phosphite and organic phosphorus. Thus, first of all, it feeds the sunflower with available phosphorus, which is necessary to increase resistance to fungal diseases, including powdery mildew and root rot, and lodging of stems. Phosphorus is also important for sunflower because it helps to strengthen the initial growth of the root system, vegetative organs, and to provide stress resistance to external factors. Recommended dose of Hanit Master
in a tank mixture - 1 l / ha.

In the first critical phase, a special sensitivity of sunflower to boron deficiency is manifested, which has a significant effect on the productivity of flowering and the quality of filling the baskets with seeds. That is why it is important to use the drug Nertus Bor for foliar feeding. It is produced on the basis of boron-ethanolamine and helps to avoid pollen sterility, increase the number of seeds in baskets, and increase the quantitative and qualitative indicators of the yield.

The absence of boron deficiency for sunflower helps to avoid leaf deformation, growth retardation, problems with the formation of inflorescences and uneven achenes. The recommended dose of Nertus Bor in the tank mixture during the first feeding is 1 l / ha.

Also, sunflower in the period before budding has a high need for potassium. The drug Humate LF20, which also contains natural humic and fulvic acids, helps to ensure its presence in sufficient quantities. Potassium is essential for sunflower plants to increase their drought tolerance as it helps to optimize water use. Thus, it prevents the loss of turgor and wilting of plants. The recommended dose of the drug Humat LF20 in the tank mixture at the first application of micronutrient fertilizers is (0.2-0.4 l / ha).

The most important nutrient for sunflower in the first half of the growing season is carbamide. This is a substance from the class of urea, which is the main nitrogen-containing fertilizer for foliar feeding. Urea contains readily assimilable amide nitrogen. It enhances plant growth and plays a key role in the formation of large plants and sunflower baskets. The recommended dose of Urea in the tank mix is ​​5 kg.

Agronomists have been studying how to fertilize corn during its cultivation for a long time, and use a whole system of nutrition for agricultural crops. Directly thanks to the right approach, a rich harvest is obtained in this area. Fertilizers for corn require careful study not only in the fields, summer residents and gardeners should also use them to increase the yield during harvesting.

Foliar top dressing with urea: what is it for and how to do it correctly?

With signs of nitrogen starvation in plants, as well as in the case of shedding of ovaries, it is useful to carry out foliar feeding with urea. Urea has an advantage over saltpeter and other nitrogen fertilizers: it burns less plant leaves. Consumption of urea solution for foliar top dressing is about 3 liters of working solution per 100 m².

The crowns of fruit trees are sprayed at a concentration of no more than 0.5% (50 g of urea per 10 l of water). It is desirable that the urea solution in a small droplet state falls on both the upper and lower sides of the sheet, evenly wetting it.

For indoor plants, a solution of urea for foliar feeding is prepared at the rate of 5–8 g of carbamide per 1 liter of water. If the plants have very pale leaves (which indicates a nitrogen deficiency), then 3 g of magnesium sulfate (magnesium sulfate) must be added to 1 liter of solution. The use of magnesium sulfate will reduce the risk of burns and increase the effectiveness of feeding, since magnesium is part of chlorophyll.

Foliar dressing is carried out in the morning or evening.

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