Instructions for the use of potassium monophosphate

To increase yields, every gardener uses fertilizers. They fill the soil with useful elements and nourish the plants. These properties are possessed by potassium monophosphate. The instructions for using this drug can be found below.

The composition and purpose of potassium monophosphate

It is a concentrated white powder. It dissolves easily in water and is quickly absorbed by the soil. It contains potassium (33%) and phosphorus (50-55%). Refers to mineral fertilizers.

These two elements contribute to a manifold increase in the yield of vegetables, fruits and berries, and increase the content of vitamins. Increases the shelf life of the crop. After its application, horticultural crops tolerate diseases better.

This fertilizer is available in two types:

  • Powder. It can only be dissolved in water, which should not be of increased hardness, because it tends to sinter.
  • Granules. They can be either dissolved or sealed with water of any quality.

Mechanism of action

As soon as the fertilizer is dissolved in water, the main amount of phosphoric acid is actively delivered to plants, bypassing the passage of chemical reactions in the soil.

They do not always absorb all the phosphorus. In such cases, it remains in the soil, undergoes some chemical transformations, and also feeds crops.

Potassium interacts with the soil and is then absorbed by crops. It has no property to accumulate in the ground. It adheres best to loamy and clayey soil types.

Advantages and Disadvantages Compared to Other Means

All fertilizers have their positive and negative sides. It is important to know how they differ from other mineral supplements. Benefits:

  1. It is quickly absorbed into the soil, immediately begins to nourish the plants.
  2. The composition does not include any harmful substances.
  3. Able to protect from the cold during the frost period.
  4. Effectively moisturizes dried soil.
  5. Ideal for everyone indoor plants.
  6. Helps young cultures increase number of shoots.
  7. Compatible with pesticides.
  8. Does not oxidize soil.
  9. Protects plants from disease powdery mildew.

Powdery mildew (other names are ash and linen) is a fungal disease. The first symptom is the appearance of a whitish coating with moisture droplets. Affects plants from bottom to top.

The disadvantages of potassium monophosphate should not be ignored:

  1. Not able to accumulate in the soil, decays quickly.
  2. It is not used to prepare crops for winter, since not stored in the ground.
  3. Weeds also prefer to eat this top dressing.
  4. Not compatible with fertilizerswhich contain calcium and magnesium.
  5. For indoor plants, which develop slowly (orchids, azaleas, gloxinia and others) are not suitable, as they are highly active.

Fertilizer application instructions

First you need to carefully study the rules for using the fertilizer, which are printed on the packaging.

It is necessary to prepare the solution in small quantities, since its substances quickly disintegrate, and then it becomes completely useless.

Potassium monophosphate is used in the following cases:

  • for seedlings of horticultural crops in those years when the landing time is not delayed;
  • for better flowering and fruiting horticultural food crops;
  • for abundant flowering ornamental plants;
  • for quick foliar dressing garden and indoor plantsif there is a lack of potassium (the leaves become brown, shriveled).

Preparation of working solution

The preparation for irrigation should be prepared in the following proportions:

  • 10 grams per 10 liters of water - for seedlings and indoor plants;
  • 15-20 grams per 10 liters - for vegetable crops that are grown in the open field;
  • 30 grams per 10 liters - for all fruit and berry plants.

Timing and method of spraying plants

Spraying garden crops is also possible and necessary. It is best to do this in the evening at sunset or in the morning before dawn. During the day, it can quickly evaporate in the sun.

Optimally, the plants should be sprayed before a wet visual film appears on the leaves. Dripping drops must not be allowed.

According to experts, it is quite enough to use potassium monophosphate two to three times a year:

  1. For seedlings of vegetable and flower crops:
  • the first feeding - in the phase of 2-3 true leaves;
  • the second - 2 weeks after planting in the ground.
  1. For vegetable crops:
  • the first - at the beginning of fruiting, the formation of tubers, root crops;
  • the second - 2 weeks after the first feeding.
  1. For fruit and berry and ornamental plants:
  • the first - after flowering;
  • the second - 2 weeks after the first;
  • the third is in mid-September.

Safety measures when working with the tool

You can only work with it with gloves. The contact of the mineral substance on the skin and mucous membranes is unacceptable. It is better to use a respirator when spraying.

After work, you should immediately wash your hands and face with antibacterial soap.

Compatibility with other drugs

Potassium monophosphate is absolutely incompatible with drugs that contain calcium and magnesium.

Combined use with nitrogen-containing fertilizers is not contraindicated. But it is better to apply nitrogen after monophosphate, after 2-5 days.

It combines well with other fertilizers.

First aid for poisoning

There are situations when the solution splashes into the eyes or on the skin. In such cases, rinse the affected areas with running water as soon as possible.

If fertilizer gets into the stomach, it is urgent to rinse it. To do this, you should drink two glasses of water. Then induce vomiting.

Storage conditions and shelf life

Fertilizer should be kept in an airtight bag in a ventilated area or outdoors, but away from light and water. It absorbs moisture well, and its subsequent use will be extremely inconvenient.

The expiration date has no restrictions.

In fact, potassium monophosphate is the ideal choice for fertilizing horticultural crops. He has many positive qualities that outweigh the minor negative aspects. Mineral substances have a beneficial effect on the soil, nourish plants, help them develop steadily and bear fruit abundantly. Fertilizer can be purchased in both small sachets and large sacks.

Potassium monophosphate - the pros and cons of using potassium phosphorus fertilizer

Potassium monophosphate or monopotassium phosphate is a modern potassium-phosphorus fertilizer that does not contain accompanying undesirable components. It is distinguished by good solubility, it is well absorbed by cultivated plants, delivering the potassium necessary for their development.

Fertilizer is produced in the form of colorless crystalline granules or powder. This fertilizer is designated by the formula KH2PO4. In the current nomenclature of industrial fertilizers, it is called potassium dihydrogen phosphate.

It contains 33% potassium and 50 to 55% phosphorus. These elements provide an increase in the yield of vegetable, berry and fruit crops in personal plots. In addition, potassium improves the taste of fruits, increases the content of vitamins and sugar in them.

The presence of a yellowish color indicates the presence of iron or sulfur and is considered a manufacturing defect. For use in the agrotechnical cycle, it is recommended to use granules that dissolve better and can be used for root feeding without the use of water.

Release form and composition

Dosage form - tablets of prolonged action: disc-shaped, slightly convex, white, with a marble pattern, bitter in taste, odorless at the break, the color of the tablets is white (in cartons of cardboard 3 blisters, each with 10 tablets, and instructions for the use of Potassium-normin) ...

  • active substance: potassium chloride - 1000 mg [corresponds to the potassium content - 524.44 mg (13.3 mmol)]
  • auxiliary components: talc - 8 mg, magnesium stearate - 1 mg, cetyl alcohol - 17 mg, aerosil 200 (colloidal anhydrous silicon dioxide) - 10 mg, Movital B30T (polyvinyl butyral) - 57.5 mg.

Benefits of potassium monophosphate

The approver is often used for flowers (flower beds and indoor), vegetables, berries, fruits, as it has many advantages:

  • Increases the quantity, quality (sugar content, usefulness, safety) of fruit crops.
  • Accelerates the onset of flowering of decorative seedlings, increases its abundance, duration.

Potassium monophosphate accelerates the flowering of ornamental seedlings

  • Protects against fungus (eliminates powdery mildew).
  • Promotes the formation of shoots, an increase in their number.
  • Increases frost resistance of trees, bushes.
  • Chemically pure compound. Does not contain chlorine, sodium, metals. The product does not cause burns to greens.
  • It dissolves in water practically without sediment, hence - a high degree and a fast process of assimilation by plants.
  • Not hygroscopic, non-caking.
  • We combine with almost every pesticide or groundbait, therefore it is often used when preparing various nutritional mixtures.
  • Moisturizes over-dried greenhouse soil, thus reducing greenhouse water consumption.
  • Overfeeding them is almost impossible.
  • There are no side effects.
  • Does not change the acidity of the soil.
  • The high activity of the drug makes it possible to carry out repeated nitrogen replenishment, after waiting from two to five days.

According to consumer reviews, monopotassium phosphate is a very effective remedy.

Stepan, 56 years old:

“I have been using monopotassium phosphate for several years now, growing different crops with my wife on the site. In the spring, planting plants, we fertilize them - in the fall we have as many vegetables as we have never seen before. There are enough supplies for the whole winter. I recommend it to others! "

Fertilizer Potassium Monophosphate

Vasilisa, 35 years old:

“I have been feeding my indoor plants with potassium monophosphate for several years. Flowers delight the eye with their health, do not get sick, bloom for a long time and very magnificently. I like the result. "

Expert opinion on potassium monophosphate

Potassium monophosphate is a salt that dissolves in one season. Suitable for feeding all crops during the period of budding and flowering, the formation of ovaries, when growing seedlings of vegetable crops. Due to its full fast solubility, it is suitable for drip irrigation. They are used as an independent feeding, in combination with other fertilizers, except for magnesium, calcium.

Potassium monophosphate instructions for use

Potassium monophosphate: application and features of fertilization

Today we once again want to replenish your collection of useful preparations for the garden and vegetable garden. Consider an interesting tool that can be used to feed various plants. We present to your attention potassium monophosphate. We'll cover the application later, but for now let's start with a description of the drug.


Potassium monophosphate is a prominent representative of the class of mineral fertilizers. The product is concentrated. It is used for feeding all crops. Unlike many other drugs, this one is well absorbed by plants. Easily and quickly dissolves in water. It is recommended to use it for decorative indoor plants. Monophosphate consists of:

  • potassium: its content accounts for 33%
  • phosphate: approximately 52%.

After application, the plants bear fruit and bloom better. They carry various diseases. A large amount of sugar accumulates in the plantings. The shelf life of vegetables and fruits is increased.

Features of the

Potassium monophosphate, the use of which we will consider later, has the following qualities:

  1. Increased digestibility by plants. They are able to absorb all the substances that the drug has.
  2. Ripe fruits accumulate a large amount of vitamins and sugars. They, in turn, improve palatability and increase shelf life.
  3. Roses, grapes, tomatoes and cucumbers love feeding with a solution such as potassium monophosphate. Application has shown that plants are cured of powdery mildew.
  4. Can be added to water and used to moisturize soil in greenhouses.
  5. For plants to tolerate frost well, it is recommended to use potassium monophosphate for winter preparation.
  6. Lovers of indoor plants cannot do without this fertilizer. Suitable for fertilizing during flowering. Extends the life of buds.
  7. From the application of fertilizer, the shoots ripen faster and better.

These are the features of potassium monophosphate. Gardeners' reviews prove in practice its nutritional properties. Let's move on to the next important issue.

How to apply

The drug is best absorbed by foliar feeding of plants with a drug such as potassium monophosphate. The application is as follows:

  • use a solution whose concentration does not exceed 0.2%
  • it is worth fertilizing the plants only in the evening, so that the solution lingers longer on the leaves and branches.

In order for the drug to be only beneficial, you should strictly follow the instructions that are prescribed on each package. It contains the following information:

  1. If you want to feed the seedlings of vegetables and flowers, then the drug is diluted as follows: 10 grams of the substance is dissolved in 10 liters of water.
  2. To feed plants that are in the open field, the following solution is used: 15-20 grams of potassium phosphate is stirred in 10 liters of water.
  3. Fruit shrubs and trees need additional feeding with the preparation, which is made as follows: 30 grams of the substance is dissolved in 10 liters of water. All plantings are thoroughly sprayed.

If you want to purchase a mineral fertilizer that is suitable for all crops, then stop your attention on such a preparation as potassium monophosphate. Application for tomatoes requires special attention.

Top dressing of tomatoes

Fertilizers, which contain potassium, are not replaceable for these vegetables. They help the tomatoes ripen evenly. Can be used to spray the bushes themselves. You need to use the drug correctly, and for this you need to know some of the nuances:

  1. Foliar dressing is done with a solution, the concentration of which does not exceed 0.2%. Accordingly, you need to prepare a substance at the rate of 2 grams of potassium monophosphate for each liter of water.
  2. If you want to water your tomatoes, then you need to prepare the solution as follows: 15 grams of the drug is dissolved in 10 liters of water. This amount is enough to process about 4 bushes.
  3. Between dressings it is worth keeping it for two weeks.
  4. It is not recommended to use potassium monophosphate more than twice.

If you want to get evenly ripe tomatoes, then choose potassium monophosphate. Application for tomatoes is beneficial for their taste.

Healthy vine

Such a preparation is used for feeding not only vegetables and houseplants. Few people know, but many fruit plantations love potassium monophosphate. Application for grapes is another secret of the substance. For better ripening of berries, such feeding is carried out in the autumn. Grapes can be fertilized in two ways:

  1. Watering. To do this, use a solution that is prepared from 15 grams of the drug and 10 liters of water.
  2. Spraying. The working composition is prepared from 20 grams of potassium monophosphate and 10 liters of water.

Fertilizers for grapes are used throughout September. Be sure to maintain the interval between feedings, which should be 7 days.

We have replenished your collection of useful drugs that are allowed and recommended for use at their summer cottage. It was about potassium monophosphate. Now you know what your plants love.

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The composition and instructions for the use of this fertilizer in a personal plot

It has long been known that only fertilization can provide a good harvest. However, it is not always possible to find good organic matter for plant nutrition. Then mineral fertilizers come to the rescue. They can easily make up for the lack of microelements in the soil, and it is convenient to work with them. Complex fertilizers occupy a special place among them, enriching the soil with several useful substances at once. These include potassium monophosphate.

Composition and purpose

The chemical formula of this substance is Kh3PO4, the full chemical name is potassium dihydrogen phosphate (monopotassium salt of orthophosphoric acid). It is a solid substance in the form of transparent crystals, readily soluble in water.

However, in a chemically pure form, this substance is not used in agriculture, and the fertilizer produced by an industrial method has a beige or light brown light due to the presence of iron atoms in it.

Potassium monophosphate is a fertilizer that contains potassium and phosphorus with a mass fraction of these elements of 28 and 23 percent, respectively. It is considered a fertilizer with a high concentration, but in terms of the percentage of potassium it is inferior to potassium nitrate, and in terms of phosphorus it is inferior to superphosphate.

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The use of this fertilizer, as well as the use of potassium monosulfate, for example, has been shown both to increase the yield of vegetable crops and for fruit trees, since saturation with potassium is performed foliarly, that is, through the leaves. This is especially noticeable in small garden areas, where the result is usually visible immediately. The use of dihydrogen phosphate has the following positive aspects:

  • This fertilizer, in addition to its main function, it can also be used as a remedy against fungal diseases and powdery mildew.
  • Fertilizer has an optimal ratio contained in the composition of potassium and phosphorus, which has a beneficial effect on the resistance of plants to diseases and increases the yield.
  • High solubility - the guarantee of the rapid assimilation of nutrients by the plant, and by all its parts.
  • Potassium monophosphate has a beneficial effect on the soil microflora.
  • Application of monopotassium phosphate does not affect the acidity of the soil in any way.
  • No ballast substances in the structure of the fertilizer eliminates the negative impact on the soil.
  • Application of monophosphate potassium promotes the formation of side shoots, which is very important for flowers.

And another advantage of this fertilizer is that it is almost impossible for them to overfeed the plants. Its disadvantages include the following:

  • Incompatible with fertilizers containing calcium and magnesium.
  • It decomposes quickly in the soil, so it is useless to apply it in the fall.
  • It is well absorbed by both cultivated plants and weeds.
  • Not suitable for indoor plants with slow development (gloxinia, azalea, orchid, etc.).

This fertilizer is used for foliar feeding of plants almost always in the form of a solution. In a mixture with nitrogen fertilizers, it has a good effect on the development of the root system.

How to fertilize

The use of potassium monophosphate is recommended for both vegetable crops and flowers, fruit shrubs, fruit trees. It is introduced in the following cases:

  • for feeding seedlings
  • for better flowering of fruit plants in the appropriate period
  • to enhance the flowering of ornamental plants
  • if signs of potassium deficiency are detected (leaves turn brown and wrinkle).

Before using the fertilizer, be sure to read the instructions for it. It is on each individual package.

Top dressing of seedlings

For foliar feeding of seedlings during the period of their growth, a working solution is prepared at the rate of 10 grams of potassium monophosphate per 10 liters of water. Fertilizer is applied along with irrigation at the rate of 5 liters per square meter. The same concentration is recommended when feeding flowers growing in open field.

It is recommended to feed the seedlings in this way twice. The first time the bait is made after the formation of two full leaves on the sprout. The procedure is repeated two weeks after planting the seedlings in the ground.

Vegetable crops

For feeding vegetable crops, in particular, tomatoes, by the foliar method, the concentration of monophosphate is increased to 15-20 grams per 10 liters of water. 3-5 liters of solution for the first feeding and 5-7 liters at a later date are applied per square meter. Spraying is done in the evening, before dew appears on the leaves. This avoids intense evaporation from the leaf surface and contributes to better absorption of the fertilizer by the plant.

Foliar dressing is carried out two to three times per season. It is recommended to do this for the first time during the setting of fruits or tubers. It is recommended to water the second time 15-20 days after the first feeding.

Fruit trees and shrubs

For foliar feeding, it is recommended to increase the concentration of potassium monophosphate to 30 grams per 10 liters of water. Spraying the crown is recommended before the active flowering stage. Near-root dressing is done with a concentration of 15 grams per bucket. The consumption of the solution is about 10 liters per square meter.

Fruit trees and shrubs are recommended to be fed three times per season. The first time this should be done immediately after the flowering stage, the second - two weeks after the first. The third time the procedure is carried out in September, this allows the plants to better prepare for winter.

Security measures

Prepare a solution of potassium monophosphate and work with it only with gloves. Avoid getting fertilizer on exposed skin and mucous membranes. When spraying, be sure to use a respirator to avoid getting the solution into the respiratory tract. In case of accidental contact with eyes, rinse immediately with plenty of cold water. In case of accidental ingestion into the stomach, it is necessary to urgently rinse and then consult a doctor. To prevent such cases, you should limit smoking or food intake while working with this fertilizer.

Store monopotassium phosphate in a well-ventilated area in a tightly closed container. The access of children and pets to such areas should be limited. It should also be remembered that in an aqueous solution, monophosphate decomposes rather quickly, losing about 30 percent of its effectiveness in an hour. Therefore, it is never prepared as a solution for future use. It should be diluted immediately before use, preparing no more than 10 liters of solution at a time.

Watch the video: : Potassium Phosphate, dibasic

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