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Boric acid in the country for plants. Boric acid: application of fertilizer for plants in the garden, vegetable garden and in the greenhouse

Boric acid irreplaceable for fruit, vegetable, berry and decorative plants, her application difficult to overestimate.

To obtain a good and healthy harvest throughout the entire period of growth and maturation, the plant needs proper care... It is worth taking care of the timely feeding of agricultural crops. Each composition has certain properties and gives on different plants different indicators... Many gardeners leave recommendations for the use of boric acid solution as fertilizers for indoor plants, fruit and berry and ornamental crops.

Provides boric acid plant nutrition, making the fruits more sugary, at the same time protects from pathogenic microbes that cause fruit rot, increases productivity.

Boric acid: description

Boric (orthoboric, orthoborate, borate) acid is a weak inorganic acid. It is poorly soluble in cold water white crystals. Initially, when heated, it forms metaboric acid, after which it becomes tetraboric acid during evaporation and finally becomes boron oxide. When mixed with water, these compounds again form boric acid.

This agent is used in medicine, plant growing and even in nuclear reactors as an antiseptic.

Important! Boron is not an alternative type of fertilizer, it is a vital element of any living organism.

Experienced farmers note the special positive results of boric acid fertilization on , in the garden on , .

Benefits for plants

Boric acid has a particularly beneficial effect on decorative flowering and fruit-berry crops throughout the growing season. When foliar processing, the stem is strengthened, and the roots are supplied with oxygen:

  • the content of calcium in the fibers of the plant increases;
  • the amount of chlorophyll in the green mass increases;
  • the metabolic process improves;
  • when processing seeds, an improvement in germination is observed;
  • processing on early stages plant development shows the acceleration of seedling development;
  • the synthesis of nitrogenous substances is stabilized;
  • timely feeding increases the rate of ovary formation;
  • develops in plants and fruits immunity to adverse weather conditions and some diseases.

Important! The solution helps in the fight against some insects: cockroaches, ants.

Instructions for use

To increase the percentage of seed germination and improve their development in the future, before planting, they should be soaked for 2 days in a solution of boric acid. To do this, the seeds are placed in a gauze bag, distributed evenly over it and filled with a pre-prepared composition of the following ingredients:

  1. 0.2 grams of boric acid;
  2. 1 liter of hot water.

Or you can use another equally effective recipe.

  1. 5 grams of baking soda
  2. 1 gram of potassium permanganate;
  3. 0.2 grams of boric acid;
  4. 1 liter of hot water.

During the season, boric acid should be used three times for plants in open ground:

  1. twice during the budding period;
  2. during the ripening period of the fruit in order to improve the taste.

The solution is prepared at the rate of 10 grams of powder per 10 liters warm water.

In order to avoid burns on the deciduous mass of plants, the treatment should be done in the evening or in cloudy weather, but not before the rain. Root feeding of perennial crops with these compositions is extremely rare, since there is a possibility of oversaturation and damage to the fibers of the root system. This procedure is most often performed to obtain the most beautiful, saturated color in the fetus. This fertilization method should not be used more often than 1 time in 3 years. Root dressing is carried out exclusively on pre-moistened soil.

Watch the video! How to properly prepare a boric acid solution

Top dressing of apple and pear trees

Boron does not pass from falling leaves into young shoots, therefore foliar feeding is necessary during the period of active growth of these crops. Lack of boron leads to:

  • curling foliage;
  • corking of fruits;
  • in more advanced cases, to wilting of the tops of trees;
  • thickening of the petioles.

If measures are not taken in a timely manner, the disease will progress, the pulp of the infected fruit will become covered with white spots, which later turn brown, and the fruit begins to deform.

Important! It is worth remembering that boric acid dissolves only in hot water.

To prepare the solution, the acid powder is poured with a small amount of hot water, after its complete dissolution, it is diluted with cold water until the required volume is obtained.

Such treatment is useful for diseased and completely healthy plants 2-3 times per season.

For preventive purposes, the crown is sprayed at the beginning of flowering. For such processing, the solution is prepared from the calculation:

  • 20 grams of boric acid;
  • 10 liters of water.

On diseased trees, such spraying will significantly reduce the dropping of the ovary. But don't wait for the tree to get sick. For prevention purposes, processing is also necessary.

Treatment strawberry

With regular processing with boric acid, the berries are fleshy, juicy, sweet.

Boron deficiency in this plant is manifested by necrosis and foliage deformation. It costs to process it twice a season:

  1. the first time before the buds open;
  2. the second - when the berries have reached their normal size.
  • for 10 liters
  • a few drops of potassium permanganate.

These volumes of liquid are enough for about 40-50 bushes.

When the inflorescences have already formed, they can be treated with a weak solution:

  • 5 grams of boric acid;
  • 10 liters of water.

During the ripening period, it is better to process with a mixture:

  • 10 g boric acid;
  • a few drops of manganese;
  • 10 liters of water;

Boric acid solution for tomatoes

From a lack of boron, tomato stems darken and begin to die off. Young shoots grow fragile, and the tomatoes themselves become speckled. For a stronger and healthy seedlings in the future, the seeds themselves should be soaked for 2 days before planting boric acid solution... The soil itself can also be fertilized with boron-containing preparations.

To avoid burns of the root system, the holes must first be filled with water for irrigation. Such measures are especially necessary on the soil, which is plowed for the first time under the beds.

The best result is obtained by spraying tomatoes when the inflorescences have already formed, but have not yet bloomed. Standard scheme solution for such processing:

  • 10 grams of boric acid crystals;
  • 10 liters of water.

Among all cultivated garden and berry and vegetable crops, the greatest need for boron is found in:

  • and Brussels sprouts;
  • swede.

Minimally boron dependent are:

But, nevertheless, the lack of this element also negatively affects the general condition of plants.

Boric acid treatment of grapes

In case of a boron shortage, grapes, even the best elite varieties, will produce small clusters. The first sign of this will be chloride spots "pea" on the leaves. At the initial stage of this disease, one treatment is sufficient.

But the most best time for spraying for treatment and prevention, the period of inflorescence formation is considered. This procedure will significantly increase the yield, since the shedding of flowers will be significantly reduced. Good composition for the procedure, it is considered:

  • 5 grams of boric acid;
  • 5 grams of zinc;
  • 10 liters of water.

Repeated spraying, as in other cases, should be done after a week and during the ripening period.

Cucumber processing

As in other cases, boron is necessary for abundant and productive flowering and the formation of an ovary. In this variant, foliar fertilization is most effective immediately before the opening of the buds.

The composition of the treatment fluid is slightly different from the previous ones:

  • 5 grams of boric acid;
  • 10 liters of water;
  • some sugar or honey.

This will attract insects that contribute to pollination. It is worth re-processing with the appearance of the ovary.

Advice! In solution, sugar or honey must be replaced with potassium permanganate in order to avoid the appearance powdery mildew on plants.

Beet processing

Beets themselves are not highly boron-dependent, but to avoid some diseases, they should also be processed.

Phomosis is a disease caused by fungi that provokes rotting of the root vegetable core. Its first signs are pale brown dots on the leaves. Such a root vegetable is not edible. It has an unpleasant taste and smell, this is due to the accumulation of toxic substances in the blackened fibers. The first step for prevention, before sowing, the seeds must be soaked in solution for 2 days. And to carry out the processing of the tops during the period when 4-5 leaves appear on a young plant.

It is worth paying attention! In humans, boron does not cause allergic reactions or irritations on the skin; if ingested, it is slowly excreted. Lethal dose- 20 grams of substance.

When preparing a liquid for processing, it is important not to overdo it with the components, since this can also harm the plants. Arched, yellowed leaves will indicate an overabundance of boron. If such green mass is fed to livestock, it may develop problems in the work of the gastrointestinal tract.

Potato processing

Boron deficiency contributes to the formation of scab. The stems become brittle, the foliage turns yellow, and the growth process slows down. Agrochemists note that good tubers grow on:

  • forest;
  • sod-podzolic;
  • swampy;
  • acidic lands;
  • areas with a high content of nitrogen, potassium, lime.

From the scab at its first manifestations, it is worth doing the treatment with a solution:

  • 6 grams of boric acid;
  • 10 liters of water.

With this volume of liquid, it is presumably possible to process 10 sq. m.In order to prevent it, it is worth treating planting materials and the first sprouts.

Signs of boron deficiency in cultivated plants

Boric acid in its spectrum of action is irreplaceable. Its disadvantage is expressed in:

  • deformation of the shape of the leaves;
  • color change, sluggish form of green mass;
  • the apical buds do not develop, only the lateral ones remain;
  • the fruits are covered with necrosis;
  • there is a massive drop of the ovary.

Preparations for processing horticultural and vegetable crops containing boric acid

For treatment with boric acid against diseases and improving the appearance and taste of tomatoes, cucumbers, potatoes and other vegetable crops experienced gardeners and gardeners recommend using "Mag-Bor":

  • 20 grams of powder;
  • 10 liters of water;
  • consumed for 3 sq. m.

For indoor and ornamental plants"Pokon" (boron liquid in a green bottle) is suitable. The fertilizer contains 13% boric acid and 14% magnesium oxide.

Conclusion

Knowing about the benefits of this element and applying it in the right amount many diseases can be prevented by personal plot and get a decent harvest.

Watch the video! Boric acid. Work on bugs

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How to use boric acid correctly - instructions for gardeners

With an abundance of modern fertilizers and drugs, we sometimes forget simple means and recipes. Among them, boric acid, which many use for instillation in the child's care and as a remedy for cockroaches can also be used as micronutrient fertilizer, stimulant for germinating seeds and increasing yields, insecticide and fungicide.

Boron is one of the most important trace elements in plant life. It normalizes the synthesis of nitrogenous substances, improves metabolic processes and increases the content of chlorophyll in the leaves. If the amount of available boron in the soil corresponds to the norm, the yield increases, the yield of fruits increases, and the general resistance of plants to unfavorable conditions increases.

Boric acid (H3BO3)

This is the simplest and most affordable boron compound, therefore it is widely used in various fertilizers. It is a colorless crystalline substance in the form of flakes, odorless, easily soluble in water, acidic properties are very weak.

Its application gives good results on sod-podzolic, gray and brown forest soils, but it is also required in chernozem

zone on light soils. Such top dressing is especially needed on an area with a significant content of carbonates, dark-colored or waterlogged soils, as well as on acidic soils after liming. The use of boric acid helps to increase the number of ovaries on fruit and berry crops, stimulates the formation of new points of growth of stems and roots, sugar content and taste qualities fruits.

Boric acid belongs to the lowest, 4th hazard class harmful substances... It does not harm a person if it comes into contact with the skin, but it can accumulate in the body, since boron is slowly excreted by the kidneys.

How much boron do plants need

Boron in a plant is a "fixed" element - it is required during the entire growing season. But an excess of boron in the soil is dangerous: it provokes a burn of the lower leaves, drying out of the edges of the leaf - the leaves turn yellow, die off and fall off. To correctly use boric acid, it is necessary to take into account the needs of horticultural crops in boron. On this basis, they are divided into 3 groups:

  1. High: apple, pear, colored and Brussels sprouts, beets, rutabagas.
  2. Medium: tomato, carrots, salads, stone fruits.
  3. Small: herbs, beans, peas, potatoes and strawberries. Although potatoes and strawberries belong to the third group, the least dependent on the amount of boron, the lack of this element seriously affects these crops.

Boron excess symptoms: dome-shaped leaves, curling inside their edges, general yellowing of the leaf. Old leaves are the first to suffer. The high boron content in fodder plants leads to severe chronic diseases in animals.

Boric acid: ways to use

Stimulation of seed germination. Boric acid solution: 0.2 g of boric acid per liter of water. Seeds of carrots, tomatoes, onions, beets are soaked for a day; cabbage, cucumbers, zucchini - for 12 hours. When sowing a large number of seeds, it is better to dust them with a powdery mixture of boric acid and talc.

Preparing the soil for sowing and planting.

Boric acid solution: 0.2 g of boric acid per liter of water. Before sowing or planting seedlings, spill the planting 1-rows with a solution, the consumption is 10 liters per 10 m2, loosen and only then sow the seeds. This method is used as a prophylaxis for suspected boron deficiency in soils. Foliar dressing. Boric acid solution: 0.1 g of boric acid per 1 liter of water. The first spraying is carried out in the budding phase, the second - in the flowering phase, the third - during the fruiting period of the plants. When introduced together with other microelements, the concentration of boric acid is reduced to 0.05-0.06% (5-6 g of the drug is diluted in 10 liters of water).

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 plain water to avoid chemical burns to the roots. Usually used on seedlings flower plants growing on sod-podzolic soils or in a mixture of peat and sand.

Good to know

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.

Apple and pear are signs of boron deficiency:

leaves thicken, warp, corking and darkening of the veins occur; with acute starvation, the leaves fall off. The rosette of the leaves is observed - small leaves at the ends of the shoots are collected in the form of a rosette. In advanced cases, the tops of the trees die off. In a pear, rosette leaves are characterized by rapid drying of flowers and deformation of fruits, on the surface of which pits and areas with affected tissue appear.

For apple trees, a lack of boron leads to a disease called internal corking of apples. Light spots with a diameter of about 1 cm appear in the pulp, later they turn brown and look like a cork or a sponge. Dry spotting and cortical spots affect the surface of the fruit, which swell and deform.

Foliar dressing (10-20 g of boric acid per 10 l of water) sharply increases fruit formation. It is carried out in the evening, before sunset or in cloudy weather to avoid burning the leaves. Spray evenly all available crown. The first time - at the beginning of the dissolution of the buds, the second - after 5-7 days. Such processing dramatically reduces the number of fallen ovaries, which gives an increase in yield by 25-30%. The resistance of trees to unfavorable conditions and the keeping quality of fruits increase.

Grape

Boron deficiency signs: 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).

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 l 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 L of water). You can use foliar dressing of the same concentration in the green fruit phase to accelerate ripening and sugar accumulation in the fruit.

Potatoes - Signs of Boron Deficiency:

Mushroom scab disease, general developmental delay. The growth point is depressed, which is accompanied by yellowing of the leaves, the petioles turn red, become brittle. The need for potatoes in boron depends on the acidity of the soil, as well as on the ratio of mineral elements in the soil and temperature. If the application rates of fertilizers for potassium and nitrogen were exceeded, the need for boron increases, and with an increase in the dose of phosphorus fertilizer, it decreases.

When the first symptoms of scab disease appear, feeding (6 g of boric acid per 10 liters of water) will help, consumption: per 10 m2 of potato plantings. If there is no boric acid, dilute 9 g of borax in 10 liters of water to treat the same area.

Also, for the prevention of scab, spray the tubers at the stage of emergence of the first seedlings with 1-1.5% boric acid solution (10-15 g of boric acid per 10 l of water), consumption: about 50 ml per 1 kg of tubers. It is very convenient to handle potatoes laid out in boxes.

When applied to the soil, boron-phosphorus fertilizers are used; in their absence, ash can be used. 1 kg of ash contains from 200 to 700 mg of boron.

Beet- signs of a lack of boron: the heart of the root crop rots This is caused by a fungal disease - phomosis. Concentric light brown spots with black dots in the center are formed on the leaves, then the disease passes to the root crop, its core decays. Fabrics cut on initial stage have a dark brown, almost black color, then dry out, becoming rotten.

Before planting, soak the seeds for 10-12 hours in a 0.1% boric acid solution. Add boron to the soil to prevent phomosis. With properly prepared soil, to obtain healthy and tasty root crops, it is enough to carry out one foliar dressing at the stage of 4-5 leaves (5 g of boric acid per 10 L of water).

Ornamental crops

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 feeding 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.

» Tomatoes (tomatoes)

Care cultivated plants on the garden plot is not limited to planting and harvesting. The main thing is timely watering, protection from diseases and plant nutrition for growth and increased yields. Tomatoes, like other crops, are very sensitive to fertilizers and respond with abundant flowering, increased ovaries and rich fruiting. Boric acid is one of the unique dressings. It not only provides tomatoes with such an indispensable trace element as boron, but also effectively fights late blight of tomatoes when spraying.

For normal development and optimal fruiting, plants need a lot of nutrients. The uniqueness of boron lies in the fact that it helps to take from the soil all the necessary micro and macro elements.

Boric acid - crystalline powder white, tasteless and odorless, dissolves easily in warm water. Boron is a part of many ready-made fertilizers, primarily used for seedlings, as it improves its nutrition, more complete absorption of nutrient organic and mineral substances from the soil, thereby creating a good base for further development plants.

Vegetables and fruit crops absorb much large quantity boron than, for example, cereals. Therefore, it is successfully used to process or feed cucumbers, potatoes, beets, strawberries, grapes, pears and apple trees in the greenhouse and in the open field.

Boric acid is very effective in combating late blight, Besides:

  • actively affects the flowering of plants, enhancing it;
  • promotes the formation of ovaries and prevents them from shedding;
  • prevents tomatoes from rotting with excess moisture;
  • increases the flow of sugar to fruits and seeds.

For tomatoes, boron feeding is especially useful; it is carried out in two ways:

  • foliar spraying of the ground part tomatoes with boric acid solution;
  • watering the bushes with a solution under the root(for tomatoes and cucumbers).

Spraying has a better effect on tomato plants: it stimulates the growth of the root system and stems, improves metabolic processes, the synthesis of nutrients, and increases the level of chlorophyll. All this makes the plant stronger and more resistant to various diseases.


Such feeding is especially useful for tomatoes grown at home - v flower pots or on the balcony, since they are more weakened than ground congeners, requires increased nutrition.

Spraying with a solution of boric acid allows you to increase the yield of tomatoes and significantly improve the taste due to an increase in the sugar content of the fruits.

When feeding is carried out

During the entire growing season, feeding is carried out several times. Even before sowing, the seeds are soaked in a nutrient solution for a day. To do this, 0.2 g of powder must be diluted in 1 liter of very warm water - 50-55 degrees(in cooler water, boric acid powder dissolves for a long time and not completely). The seeds are dipped into the solution in a gauze bag so that they do not float to the surface.

Such seed treatment significantly increases their germination, strengthens seedlings, contributing to a more complete supply of nutrients, protects against diseases even at high humidity.

Subsequent spraying is carried out 3 more times:

  • during bud formation;
  • during the period of mass flowering;
  • at the stage of the beginning of fruiting.

Between dressings must pass at least ten days... If the plants reacted well to the first treatment, it is advisable to carry out the subsequent ones, and if not, it is better to refuse and not water with this type of fertilizer.

The ready-made solution for spraying (see the recipe below) should be sprayed from a spray bottle directly onto the leaves, stems, buds, flowers and fruits of tomatoes. Such feeding much more efficient than watering at the root, as it ensures the rapid absorption of boron by the plant. The result is noticeable already literally on the second or third day after treatment.

Spraying tomatoes should be carried out exclusively in the morning, evening or in cloudy weather to avoid direct sunlight during the treatment period, otherwise the plants get burned and may dry out.

So simple and cheap way will help to harvest a rich harvest of delicious sweet tomatoes and improve their keeping quality, which is very important for preserving the harvest.

Signs of a boron deficiency in a tomato

By outward appearance It is easy to tell that plants are deficient in boron:

  • upper (but not lower) leaves of bushes turn yellow, curl, become small, deformed;
  • apical shoots gradually die off, because nutrients do not enter plants;
  • tomato bushes bloom very weakly, ovaries are not formed, a large number of barren flowers, small ovaries fall off.

Processing of tomato plants should be carried out only warm solution boric acid! Water and soil temperatures must be the same.

Useful properties of boric acid for tomatoes

Tomato is one of the most popular fruits in the garden or garden plot... The benefits of boric acid for their nutrition and cultivation can hardly be overestimated. We can say that the future harvest of tomatoes largely depends on boric acid, because it has a positive effect on the entire vegetation process plants:

  • strengthens, nourishes seedlings;
  • activates flowering;
  • increases the number of ovaries;
  • prevents fruit from rotting;
  • promotes the transport of sugar along the stems, increasing the sugar content of the fruit.

Instructions for preparing spray solution

To prepare the solution, it is necessary to observe some subtleties and follow the instructions for use and use. Dilute boric acid powder (approximately 0.5 teaspoon without top) in a glass of hot water to dissolve it quickly and completely, and then add it to 10 liters of water, stir, and spray the tomatoes with this ready-made solution.


Depending on the purpose of processing, different proportions are used:

  1. To prevent shedding of the ovaries, 1 g of boric acid is dissolved in 1 liter of hot water... After the solution has cooled down, the tomatoes are sprayed with a spray bottle.
  2. To combat late blight add 1 teaspoon of powder to a bucket of warm water and process the plants. To achieve the best result, it is recommended to spray the tomatoes with a weak solution of potassium permanganate a week before, and a week after treatment with boron - with a weak solution of iodine.

Processing tomato plantings with boric acid is the most effective and cheapest way to get healthy and bountiful harvest... The main thing is not to overdo it, strictly observe the proportions, and an excellent result will delight you.

Fertilizer Green Belt Boric acid for plant nutrition (10 g)

How is boric acid useful?

During the entire growing season, boric acid in the garden and vegetable garden is an important component necessary for the growth of vegetation. V in the case of stem processing, an increase in the amount of oxygen transported to the rhizome is achieved... The amount of calcium in all parts of the plant also increases, in the green mass the dosage of chlorophyll becomes greater, and the metabolic process is also stimulated.

The main areas of use and benefits of the drug:

  • boric acid is often used in cases of seed planting, since the agent increases their germination;
  • boric acid in the garden is often used for rooting seedlings, respectively, the number of plants that have begun and began to actively develop almost immediately after planting increases;
  • when used at the stage of ovary formation, the substance helps to increase the number of useful flowers;
  • at any stage of the growing season, acid normalizes the synthesis of nitrogen compounds;
  • when feeding, the fastest development and strengthening of all plants is ensured.

According to agrochemists, it becomes obvious that with a sufficient amount of boron, the quantity and quality of fruiting increases significantly, the storage of the crop improves and greater resistance to harmful conditions cultivation. Plants with a sufficient amount of boric compounds are less likely to get sick and are resistant to infectious lesions, as well as to pests (cockroaches, ants).


Fertilizing plants with boric acid

Signs of boron deficiency in garden and horticultural plants

Boric acid is extremely important in horticulture and cannot be replaced by other substances. The lack of this component leads to numerous negative consequences ... Outwardly, its deficit can be determined by the following characteristics:

  • pallor and yellowing of the top of the plant, especially foliage;
  • irregular shape of new leaves. They become ugly, break easily and fade quickly;
  • with a lack of boric compound, development occurs only in the lateral buds, and the apex does not grow for a long time;
  • the onset of necrosis (rot) begins on soft fruits and spreads to the stems;
  • dying off of the upper shoots;
  • many inflorescences fall off or develop slowly after the ovary;
  • when growing root crops, fungal scab often occurs;
  • if grown cauliflower, brown rot often appears.

Acid rules

Boron ions in plants undergo minimal migration, respectively, when a substance enters a certain place, the acid remains approximately there until it is processed by the plant. Boric acid is used in vegetable gardening as a fertilizer to improve the growth and taste of fruits, but if the recommended dose is exceeded, chemical burns may occur.

Rules for the use of boric acid for plants:


It is necessary to spray with boric acid in compliance with the concentration, otherwise chemical damage appears, they cannot be cured by other drugs.

Processing can be carried out even by novice gardeners, since the product does not require a particularly complex application technique. The plant constantly experiences the need for a boric compound, only it is worth considering the poor solubility at low temperatures and the slow migration process. The method of processing in the backyard and suburban conditions does not differ from other drugs.

It is recommended to adhere to the standard use schedule for vegetables, as well as berry and fruit trees- 2 times are covered with the appearance of flowers, then 1 more procedure is repeated at the time of the appearance of the ovary. For trees of the pome group, treatment is recommended 3 times:

  1. When a bud is formed.
  2. In the process of flowering.
  3. After the dry flowers have fallen off, when the fruits are poured.

Boric acid for indoor plants


Plant protection products Agromaxi Boric acid 20 g (Agromix)

The use of boric acid for indoor plants strengthens the root system and profuse flowering... To achieve a positive reaction, it is necessary to adhere to a dosage of 1-1.2 liters of water per 1-1.2 g of the product. The water must be warmed up, otherwise the acid will not be able to dissolve completely... After breeding, foliar treatment of plants is carried out, which contributes to the rapid appearance and formation of buds and flower buds. Boron is applied using a spray method identical to gardening.

Boric acid application to flowers indoor growing carried out until the opening of the buds and the beginning of throwing out the color. Regularity of use Is a pledge healthy looking plants, since the boric compound is required throughout the growing season. Violets are most in need of boron (planting is carried out in peat with a boron deficiency), other plants also need a chemical component, which, when correct use respond positively to acid treatment.

Boric acid for roses

For roses, a sufficient amount of the compound leads to faster calcium absorption and greater bud formation. Before diluting boric acid for a rose, you should decide whether other micronutrient fertilizers will be used in the complex.

If boric acid is applied to roses on its own, a 0.1% solution is prepared - 10 g of fertilizer is added to 10 liters of water. In the case of processing several fertilizers in parallel, it is recommended to use 5 g per 10 liters. Spraying is carried out at the stage of budding and the beginning of the appearance of flowers.

When using boric acid in relation to the prevention of the development of spores, it is recommended to immerse the cuttings in liquid (20 g per bucket of water) for several minutes.

Boric acid for cucumbers


Spraying cucumbers with boric acid

With regard to cucumbers, boron deficiency can be determined by the following symptoms:

  • the leaf blade turns yellow, most often the lesion begins at the edge;
  • when ripe, cucumbers have yellowish stripes in the longitudinal direction;
  • growth freezes;
  • the ovaries die.

When fertilizing cucumbers, the technology of how to dilute boric acid is different. It is worth mixing 5 g of the substance and 2 g of manganese sulfate. The technique works when applied in the garden and outdoors. An interval of 2 weeks must be maintained between treatments. The product prevents the ovaries from wilting and increases the yield.

When growing cucumbers in a greenhouse, you need to spray with a complex agent:

  • potassium chloride type (0.5%);
  • superphosphate (5%);
  • magnesium sulfate (0.1%);
  • boron solution (0.03%).

The procedure is repeated 2 times a month.

Boric acid for eggplant

Eggplants and peppers respond well to feeding with a minimal dose of boron. The procedure has the following stages:

  1. 2 g of the drug is prepared (about half a teaspoon).
  2. 100 ml of hot water is poured into a cup and the powder is poured, then the mixture is thoroughly stirred.
  3. Pour the liquid into a bucket of water, stir and start spraying.

Boric acid for cabbage


Cabbage harvest after boric acid treatment

The deficiency of boric compounds in cabbage can be determined by the following criteria:

  • inflorescences become transparent;
  • the heads grow deformed;
  • inflorescences acquire a rust color;
  • bitter taste;
  • hollow heads of cabbage.

It should be carried out with boron with the addition of manganese sulfate. During the season, 3 procedures are carried out:

  1. In the process of bud formation.
  2. At the flowering stage, when the plant already has about 5 leaves.
  3. When fruiting - a dose of 10 g of manganese sulfate to 1 g of acid, the mixture is diluted in 1 liter of water.

The use of boron leads to a compaction of the head of cabbage and an increase in yield. In the case of cauliflower, you can use a combination of boron powder with molybdenum in an equal proportion of 2.5 g per liter. It should be performed when 4 leaves appear, this will lead to the fastest ripening of the fruit, usually development is accelerated by 1 week.

Boric acid for onions

For onions, the standard procedure is 0.2 g of substance per 1 liter of liquid. Onion seeds are immersed in liquid for 1 day... Additional coating with boron powder during planting is allowed, only it should be mixed with talcum powder.

Boric acid for tomatoes


We increase the tomato yield - feeding with boric acid

An element deficiency in tomatoes has a typical manifestation:

  • oppression of growth points;
  • when new stems are formed, excessive fragility of the plant appears;
  • the fruits acquire brown spots.

Procedure foliar feeding tomatoes are carried out with a solution of 0.1%. The recommended processing times are the stages of ovary and fruit formation.... The tool allows you to improve consumer qualities and accelerate the growth procedure.

Top dressing can be carried out during the period of pecking of the fourth leaf; for this, a mixture of 0.5 g of acid, 10 g of superphosphate and 8 g of potassium chloride per bucket of water is used. A similar mixture will be enough to process 200 tomato bushes.

When iodine is added to the solution, resistance to late blight is ensured, but it can be sprayed only until mid-June. If the leaves begin to wither, a solution with a small concentration of potassium permanganate is used. The next stage of recovery, which is carried out a week later, is a boron solution - 0.01%. The course should be completed with a 1% iodine solution, the procedure is carried out after 1 week.

Strawberries and strawberries react to a lack of boron with the onset of necrosis and a change in the shape of the foliage. With an abundant amount of substance, the berries grow fleshy and sweet.... A systematic treatment is recommended for this plant.

It is necessary to cover the bushes with acid during the period of opening the buds, at the stage of fruiting and when the berry reaches large sizes. The solution can be supplemented with potassium permanganate - 2-3 drops... When preparing a bucket of mixture, it will be possible to process 40-50 bushes.


Growing strawberries - why do you need boric acid

When forming a peduncle, it is highly desirable to spray with a solution of 0.05%. During the ripening process, you can use a supplement of boron, manganese and water (2: 2: 1).

How much boron do you need

The type of culture that is being processed affects the frequency of boron use, the concentration of the substance and the composition of the solution. All plants can be divided into 4 categories based on the level of need for a chemical element:

  1. Tall - pome-type trees, beets and cabbage.
  2. Medium - trees with stone fruits, bushes with berries and most of vegetables and herbs.
  3. Low - grass and legumes.
  4. Low but severe reaction to deficiency - strawberries and potatoes.

It is allowed to carry out fertilizing outside the drawn up schedule, subject to the appearance of signs of a deficiency of a trace element. Solutions of 2-fold concentration are often used. When introducing boron, before sowing, liming of the soil should be carried out (at high acidity). The procedure is performed only in the spring.

What is the effect of the application?

When using boric acid as a fertilizer, it is possible to:


How to use boric acid to fight ants and other insects?

The acid is effective against a number of pests: cockroaches, ants and some other insects. The powder is placed as bait, and the insects eat it and get poisoned.

There are several ways to prepare baits:

  • a simple method with low efficiency - scatter acid around the hives;
  • 100 ml of boiling water is heated, it is mixed with 5 g of acid. When the powder dissolves, add 1 tsp. honey and 2 tbsp. l. Sahara. After thorough mixing, they are poured into an open top dish and placed near the ant trails;
  • grind 2 yolks from chicken eggs and 0.5 tsp. acid. It is expected to obtain small peas that fit in places of large numbers of ants;
  • 1 tbsp. l. water, 2 tbsp. l. glycerin, 1 tsp. honey, 0.5 tsp. boron and 1.5 tbsp. l. sugar - all this is mixed to obtain bait in the form of balls;
  • 3 potatoes, cooked "in their uniforms", 3 boiled yolks, 10 g of acid and 1 tsp. are ground and mixed thoroughly. The resulting balls are placed in places where insects are wrecking.

It is necessary to protect the scatter from being consumed by pets.

Boron in the greenhouse

Top dressing with boron is most effective in a greenhouse, because the warm and humid microclimate significantly reduces the risk of overdose or burns, boron migration also occurs much faster.

The principle of processing differs depending on the crop, but a relatively universal dosage is 1–2 g per 10 liters of water.

The lack of boron in the soil has the most negative effect on the yield of tomatoes. With a deficiency of the element, some of the fruits die off even at the stage of flowering and ovary, and therefore obtaining a bountiful harvest becomes impossible. To solve this problem, boric acid is used in the gardening business - the most affordable, economical and easy-to-use fertilizer. Such feeding provides abundant growth and flowering of tomatoes, prevents the development of diseases. But the agent should be used carefully, observing the proportions, since an excess of boron is also harmful to plants.

  • The introduction of the agent into the soil, as well as spraying of greens, saturates the tomatoes with boron, which contributes to an increase in the quality of fruits and productivity.
  • Spraying the tops prevents the development of late blight, which often affects fruits when grown in a garden bed and in a greenhouse. For more reliable protection it is recommended to spray the tomato bushes with a solution of iodine again after a week.
  • The substance improves the transport of sugar along the stems, which makes tomatoes sweeter and more tasty.
  • Boron increases the ability of plants to absorb and synthesize nutrients from the soil.
  • Spraying tomatoes with a boron solution during flowering accelerates the formation and number of ovaries. If it is applied correctly and dosed, then the first tomatoes can be harvested at the end of June.

Top dressing of tomatoes through watering and foliar processing should be carried out in a complex. This approach allows you to grow more quality tomatoes and increase yields by 20-50%.

When to spray

Planned feeding of tomatoes planted in the garden is carried out several times during the season:

  • It is recommended to feed the crop for the first time before flowering, when the buds have just begun to form - spraying tomatoes at this time increases the number of buds and accelerates their growth.
  • The next top dressing is carried out with full mass flowering of the bushes - spraying during this period contributes to the formation of ovaries and prevents shedding of peduncles.
  • V last time tomatoes need to be fed during the beginning of fruiting - during this period, the introduction of boric acid improves the presentation and taste of tomatoes (they become sweet and not watery), accelerates ripening, and prevents rotting.

Feeding does not have to be done according to plan - there are times when it becomes necessary to feed tomatoes due to a lack of certain micronutrients. This situation can arise if the tomatoes are planted in an area with poor, sandy, or sandy loam soil, where the content of assimilable boron compounds is very low.

It should be noted that the cultivation of tomatoes is best done on fertile soils: black soil, chestnut soils, which naturally contain a large amount of soluble and easily digestible boron. But, unfortunately, the soil of most of our gardens is not very fertile, and contains too much sand or clay, which makes it necessary to additionally feed the soil - to add boric acid in order to have at least some opportunity to grow nightshade crops.

As for the boron deficiency for garden crops, then any vegetable grower can easily determine its deficiency by the appearance of the bushes. When you visually inspect the plants, you can see the following signs:

  • leaves curl up - in this case, it is necessary to treat the stems with a solution of boric acid, and spray the leaves themselves;
  • the leaves turn yellow, starting from the base of the bush, while the top is still green - if at this stage the tomatoes are not sprayed, the entire bush will lose color, and the leaves will fall off, which will lead to the death of the bush;
  • leaf veins dry up and acquire a yellow or black color, and the leaves themselves become brittle - this sign also indicates the need for unscheduled spraying of tomatoes with boric acid;
  • light or brown spots have formed on the leaves - the bushes also need to be fed with boron;
  • flowers fall off even during flowering - in this case, boric acid is a first aid remedy, since this situation can lead to the absence of an ovary.

In addition, there are cases when seemingly healthy ovaries begin to dry out and fall off. Boric acid in this case will help stop the destructive process. Tomato stems can also suffer from a lack of boron - at the base of their growth they turn black, and if the bush is not sprayed in a timely manner, the stems may die off, and, accordingly, the death of the bush. Also, the stems, if not fed with boron, may dry out prematurely before the fruits grow and begin to ripen. The lack of an element can be indicated by the fragility of young shoots growing from the base of the bush - when bent, they easily break, while healthy stems can bend without any consequences. When brown or black spots with dead tissue, sometimes covered with a white bloom, are formed on the fruits of tomatoes, this symptom indicates the defeat of tomatoes by late blight. In this case, not only boric acid solution is used for spraying, but also iodine.

It should be said that boric acid when growing tomatoes can have the most different application... She can not only spray the bushes, but also process the seeds, as well as add the solution to the holes shortly before planting the tomato in open ground- experienced gardeners advise to do this a day before planting seedlings. If tomatoes are grown in insufficiently fertile soil, a weak solution of boric acid can be used to water the garden.

Regular feeding is very important for tomatoes - it helps to increase the plant's resistance to diseases, especially phytophthora. However, you need to observe the measure and not exceed the dosage. You also need to remember that tomatoes are sprayed no more than 1 time in 10 days.

If the next spraying has led to a deterioration in the condition of the plants, this means that the use of the product must be stopped.

How to do it right

Top dressing of tomatoes growing both in the garden and in the greenhouse is carried out in two ways:

  • watering, when the solution is applied directly under the roots of plants (this method is the main one, since it delivers nutrients to the leaves through the roots);
  • foliar dressing, in which the solution is sprayed onto the green part of the plants, and tomatoes are obtained through the leaves (this method is considered more effective, because the result appears literally in a couple of days, and sometimes even several hours).

It follows from this that feeding a tomato by watering can be carried out in a planned manner: before planting seedlings, during flowering, in the middle of the growing season. But it is better to spray it in case of urgent situations: late blight disease, to accelerate the formation of the ovary, for early ripening of fruits.

It is necessary to work with the substance very carefully - it is necessary to correctly calculate the ratio of the ingredients from which the solution is prepared, since an overdose can significantly harm the plants. A ready-made solution, which already contains boric acid in the desired concentration, can be bought in a specialized store, but it is also not difficult to prepare it yourself.

To prepare a solution, it is necessary to dilute boric acid in hot water in a ratio of 1 g of the drug to 1 l of water. It is necessary to dilute the drug in hot, not boiling water. But before feeding the tomatoes, you need to wait until the liquid has completely cooled down. The same concentration of acid can be used for irrigation, but it should be noted that it is recommended to spray the plant leaves for greater efficiency.

Tomatoes are sprayed at the rate of 1 liter of solution per 10 m² of planting. With this volume, tomato leaves are abundantly moistened. Depending on the purpose for which the solution is used, there are different options its preparation:

  • If the agent is sprayed on tomatoes during flowering to preserve the ovaries, then the concentration can be 5-10 g / 10 l of water.
  • To protect against harmful bacteria, in particular phytophthora, boric acid should be diluted at a dosage of 1 teaspoon / 10 l of water. Also, to get rid of phytophthora, a week after boric acid was used, tomatoes are sprayed with iodine (in this case, you need to dilute 5-10 g of iodine in 10 liters of water).
  • Many gardeners use boric acid to soak their seeds. In this case, the agent is prepared at a concentration of 1 g / 1 l of water.

When spraying the product, it is important to pay attention not only to the leaves, but also to the flowers and fruits. It is necessary to spray the bushes well during the period of mass flowering - this contributes to the formation and maintenance of the ovary, and accordingly increases the yield. To feed the bushes with boron during flowering and during the ripening period, the agent should be sprayed at the rate of 10 ml / 1 bush. In the future, as the bushes grow, the dosage increases by 1.5 times.

It is also important to know that it is possible to feed tomato bushes with iodine only by watering at the root, since if iodine gets on the leaves, it can form burns, which will lead to the death of the entire bush. When watering, a product is used at the rate of 0.5 l / 1 bush.

Boric acid is irreplaceable fertilizer for tomatoes. Its judicious use in different periods vegetation (flowering, ovary, fruiting) has a very beneficial action on the development of crops, and allows you to reduce the cost of care and feeding. And of course, the main thing for which gardeners love boric acid is a plentiful and high-quality harvest of tomatoes, obtained thanks to the high protective properties drug.