Potassium monophosphate for plants. Potassium monophosphate: use of fertilizer, its composition, recommendations for application Potassium monosulfate fertilizer

Material prepared by: Yuri Zelikovich, teacher of the Department of Geoecology and Environmental Management

© When using site materials (quotes, tables, images), the source must be indicated.

Potassium monophosphate (monopotassium phosphate) is a ballast-free potassium-phosphorus fertilizer. Chemical formula KH2PO4; name according to the chemical nomenclature of potassium dihydrogen orthophosphate (monocassium salt of orthophosphoric acid). The structural formula is given on the left in Fig. Density in monocrystalline form is 2.34 g / cubic meter. cm. Solubility in water at 20 degrees Celsius 22.6% by weight; at 90 degrees – 83.5%, i.e. Potassium monophosphate is a highly soluble substance. Chemically pure potassium monophosphate - colorless crystals. Release forms for agrochemicals: powder or granules of light brownish or beige color, in the center in Fig. A pronounced yellowish color is evidence of the presence of iron or free sulfur impurities; such a drug is a manufacturing defect.

The composition of potassium monophosphate on factory packaging (on the right in the figure) is given in terms of the active ingredients, because in soil moisture in the presence of humates, potassium monophosphate completely dissociates, and radicals (residues) come into contact with air oxygen. In fact, the active substances in potassium monophosphate are K- – 28% and P+ – 23%. Therefore, the statement that potassium monophosphate is one of the most concentrated potassium-phosphorus fertilizers is incorrect. In potassium it is superior to potassium chloride, potassium sulfate and potassium nitrate; for phosphorus - superphosphates.

Note: It is better to purchase potassium monophosphate in granular form. The powdered drug can only be dissolved in water. When mixing potassium monophosphate powder with water of increased hardness, it sometimes sinteres. The granular preparation can be dissolved and mixed with ordinary tap water, as well as well water, spring water, from an Abyssinian well on the site, etc.

Advantages and disadvantages

Nevertheless, the use of potassium monophosphate in agricultural technology is more than justified, especially on small and medium-sized areas if there are possibilities for manual individual processing of plants. In such conditions, the relatively high (but not excessively high) cost of the drug is more than compensated by the increase in yield.

Potassium monophosphate as a fertilizer has a trace. advantages:

1. The ratio of active K and P in the preparation is optimal for maximum fruiting, as well as increasing plant resistance to diseases, pests and frosts;
2. Potassium monophosphate, more than other phosphorus-potassium fertilizers, promotes the formation of lateral shoots with peduncles, which is essential for flowers, except for cutting (see also below);
3. High solubility causes rapid migration of active substances and ease of their absorption by plants;
4. Potassium monophosphate is absorbed by all parts of plants;
5. It is almost impossible to overfeed plantings with potassium monophosphate; this advantage is a consequence of one of its disadvantages, see below;
6. Potassium monophosphate is fully compatible with pesticides, up to the preparation of a single tank solution for complex treatment;
7. Potassium monophosphate itself is a good means of preventing and combating powdery mildew and other diseases. other fungal diseases;
8. The absence of ballast substances guarantees the absence of side effects from the fertilizer;
9. Potassium monophosphate has virtually no effect on soil acidity;
10. Potassium monophosphate is also beneficial for beneficial soil microflora. This is very important for greenhouse farming: drying out of the soil with seemingly sufficient watering in greenhouses regularly fed with this fertilizer is a rare exception, because microorganisms involved in soil structuring are in comfortable conditions.

Note: Point 10 is also important because it allows you to reduce water consumption for humidifying the greenhouse. Given the current tariffs for it, you will agree, this is significant.

About compatibility with nitrogen

Plants will respond well to phosphorus and potassium only if they have healthy, powerful green mass, which requires nitrogen. There are no serious contraindications to the use of potassium monophosphate together with nitrogen fertilizers, but it is better not to take risks by preparing a common solution of both. The high activity of potassium monophosphate makes it possible to reduce the gap between potassium-phosphorus and nitrogen fertilizing to a minimum of 2-5 days; the wetter the weather, the shorter the gap. Nitrogen should be given after phosphorus and potassium, except for nitrogen-fixing plants: legumes, clover, alfalfa.

Note: Usambara violets Saintpaulia are also nitrogen fixers. They can be fed with monopotassium phosphate alone. If signs of nitrogen starvation appear, it is useless to add nitrogen; incorrect maintenance conditions are to blame - little light, heavy, poorly permeable soil or acidic soil.

An excellent mineral fertilizer in general, potassium monophosphate is not without its drawbacks:

1. Potassium monophosphate does not accumulate in the soil and decomposes very quickly, so fertilizing with it is carried out only in solutions (see below). Adding solid potassium monophosphate to the soil will not harm the plants, but it will not do any good - all the fertilizer will be lost;
2. As a consequence of the previous etc., potassium monophosphate is not suitable for pre-winter preparation of plantings in open ground, except in certain cases, see below;
3. Also, due to point 1, potassium monophosphate is most effective in the warm season of a favorable year - not hot and moderately humid. In greenhouses - with sufficient lighting and regular ventilation;
4. Another negative consequence of point 1 is that weeds taste and use potassium monophosphate no less than cultivated plants. Therefore, its use in the garden or vegetable garden can only be recommended to cultivated owners who have enough time and means to control weeds. At a weekend dacha, weeded occasionally, potassium monophosphate will cause the area to become overgrown with anything other than what is needed;
5. Potassium monophosphate is hygroscopic and, when wet, loses its properties. Working solutions are unstable in air and light. Therefore, you need to purchase the drug in packages suitable for single use, and use the working solution immediately after preparation.

Potassium monophosphate is completely incompatible with magnesium and calcium fertilizers, which seriously limits its use for certain crops, see below;

Note: The author once saw, on a plot of land whose owners madly relied on potassium monophosphate, a thistle 4.5 m high (!) and with a stem as thick as a healthy man’s arm. Vo grew big thanks to tomatoes and potatoes! The hedge trimmer didn't take it, so I had to cut it down. The core was as hard as ivory, and the thorns would make a good rake. I imagined plantations of such mutants for technical purposes - interesting, but not in the countryside for winter help.

Monopotassium phosphate and grapes

Grapes need magnesium more than other berry plants, so under normal conditions we do not recommend potassium monophosphate for fertilizing vineyards. Typically, grapes are fed with potassium magnesia in the second half of summer and in preparation for winter. But it is not a particularly active fertilizer: it migrates in the soil and is absorbed by plants slowly, but it leaches well. Therefore, if the year turns out to be cool and wet, the vines do not have time to get enough potassium, winter is difficult, and the harvest the next year is poor. In this case, intensive pre-winter preparation of grapes using potassium monophosphate will be justified, see video:

Video: feeding grapes with potassium monophosphate before winter

Indications for use

Based on the above-described properties and characteristics of potassium monophosphate, it is recommended to use it for feeding cultivated plants:

• For seedlings of garden crops in average weather conditions and favorable years. In unfavorable years, when planting in the ground is delayed, it is better to stimulate root formation at the box-pot stage with a limited amount of nutrition with rootstock.
• For more abundant flowering, reduced ovary drop and better fruiting - all garden food crops.
• Ornamental open ground crops - for more abundant and longer flowering.
• For seasonal outdoor flowers: hanging, potted.
• For emergency foliar feeding of outdoor and indoor plants in the presence of signs of acute potassium starvation: browned, “rusted,” wrinkled and curled edges of leaves.

Seedlings, garden and vegetable garden

The standard regulations for the application of potassium monophosphate to horticultural crops and seedlings in average and favorable years in the Central Belt of the Russian Federation are given in the figure:

The dosage within the specified limits should be selected according to the habit (large, small, thin, lush) and the speed of plant development (early ripening, late ripening). Errors within the limits of the indicated doses are insignificant, but an experienced plant grower, using them, can achieve the maximum yield in a given year with minimal costs for agrochemicals.

The optimal effective dosage of potassium monophosphate for foliar feeding is 0.05% (5 g per 10 liter bucket of water); the minimum for spraying decorative potted and hanging flowers after a rainstorm and in other cases (see below) is 0.02% (2 g per bucket). The same dosage is valid for planned foliar feeding in productive years. Maximum, for watering fruit trees after heavy rain or prolonged rains – 0.3% (30 g per bucket).

Note: Emergency fertilizing with potassium monophosphate on the leaves in a minimum dosage after heavy rains or heavy rains should be carried out to avoid oppression of plants accustomed to a complete potassium-phosphorus diet, because Heavy/long rains wash away potassium not only from the soil, but also from the apical (above-ground) parts of plants. For comparison, a person accustomed to fasting can tolerate malnutrition more easily than someone who eats plenty every day.

The rules for watering and spraying are general: in the evening, preferably on a cloudy day, or in the morning until light. Watering - into pre-moistened soil. Consumption rates for irrigation solution:

• Fruits and vegetables in the early stages of development (before budding) - 3-4 liters per 1 sq. m of plantings.
• They, at the maturity stages, are 5-6 liters for the same area.
• Decorative flower crops - 5-10 liters per 1 sq. m of planting depending on the habit.
• Berry bushes - 7-10 liters per 1 sq. m of area shaded at midday. Water at the roots, not between the rows!
• Fruit trees - 15-20 liters per 1 sq. m of tree trunk circle.
• Ornamental trees - 20-30 liters for the same area.

Spraying - with small “foggy” sprays until the leaves are filmy surface moistened; the appearance of rolling drops is unacceptable. For certain crops, some specific features of fertilizing with potassium monophosphate apply.

Tomatoes

Watering with a 0.15% solution of potassium monophosphate (15 g per bucket of water) for tomatoes should be carried out no more than 2 times per season with an interval of at least 2 weeks. Watering rate is a bucket of working solution for 4 bushes. In productive years, it should be extended to 3 weeks or more in accordance with the observed phases of plant development (see standard regulations). In this case, spray the leaves with a 0.02% solution in the intervals between waterings. The same solution is used for emergency spraying after heavy rains, see above.

cucumbers

Cucumbers are fed by watering with a solution of potassium monosulfate in the same doses and on the same schedule as tomatoes. The working solution for spraying is also 0.02%, however, foliar fertilizing with potassium and phosphorus for cucumbers should be carried out with an eye on the developing fruits. A normally ripening cucumber is straight and thicker at the petiole than at the tip. If the fruits, starting from the ovaries, are curved and/or pear-shaped, they lack potassium, they need to be fed by spraying. Foliar feeding of ripening cucumbers takes priority over fertilizing by watering, because If the cucumbers turn brown from a lack of potassium, there is no way to fix it. That is, if, for example, on the next watering is scheduled for a week, but the cucumbers are crooked, fertilizing watering needs to be postponed, because... the time interval between fertilizing with potassium monophosphate should be at least 1.5-2 weeks.

Potatoes, root vegetables, onions, garlic

It is advisable to feed potatoes with potassium monophosphate only by spraying on the leaves. Fertilizer irrigation will lead to excessive growth of the root system by reducing the number, weight, taste and boiliness of tubers. Solution – 0.02-0.05%; processing - twice per season according to regulations. In exactly the same way and for the same purpose, root crops and bulbous edible plants are fed with potassium monophosphate.

Fruit and berry plants

Fruit trees and berry bushes are regularly fed with potassium monophosphate, on the contrary, mainly by watering. Emergency/unscheduled feeding of the crown is carried out in productive years and after heavy rains, see above. Spray only the vegetative (green) parts, trying to get more of the solution onto the undersides of the leaves. Watering is carried out 1.5-2 hours after the treated area is well moistened. You can water trees and shrubs with potassium monophosphate in the morning, as long as the ground is moist, but not in rain or fog - most of the fertilizer will be lost. Mature stably bearing fruit trees can be watered with a 0.2% solution (20 g per bucket of water).

Monopotassium phosphate and flowers

Fertilizing flowers in flower beds and lawns with potassium monophosphate is carried out at the beginning of the buds opening and when entering the phase of abundant flowering. In a favorable year, it is possible to achieve early flowering by watering the sprouts in the phase of 3-4 true leaves with a 0.05% solution at the rate of 3-4 liters per 1 square meter. m of planting. For irrigation in the stages of active vegetation, a 0.07-0.1% solution is used. Spraying, if necessary (see above), is done with a 0.02% solution.

Potted and ampelous outdoor flowers are fed with potassium monophosphate in the same way as petunias (see below), but the dosage is adjusted (not the consumption rate of the working solution!) in accordance with the comparative need of both for potassium; it is obtained according to the manuals for gardeners. For example, phlox needs approx. 3/4 potassium compared to petunias. In this case, the working solution is prepared not 0.1%, but 0.07%.

Petunias

These flowers are sometimes called survivors: faded, degenerate petunias can be seen growing on dust banks under the walls of houses or in the city from cracks in the asphalt. However, luxurious varietal petunias are quite sissies; especially hanging ones (in hanging flowerpots) and grown in vertical flower beds. Accordingly, the schedule for feeding petunias with potassium monophosphate looks like this:

• Seedlings, 2-3 true leaves – 0.05% solution, 2-3 liters per 1 sq. m or a teaspoon per plant.
• 10 days later - 2 weeks after picking or landing in place - 0.07% solution, 5-6 liters per 1 sq. m.
• At the beginning of flowering - 0.1% solution, 10 liters per 1 sq. m. m.
• Ampelous and vertical flower beds - after a rainstorm, spray with a 0.01% solution (1 g per bucket of water) regardless of the planned fertilizing schedule.

In general, ampelous petunias require especially careful fertilization and care, because nutrients from hanging flowerpots are leached (washed out) instantly compared to open ground. Here you can’t get by with potassium monophosphate alone; you need to use a variety of them, see next. video lesson.

Video: about fertilizing petunias

Potassium monophosphate- complex phosphorus-potassium fertilizer. The chemical formula is KH 2 PO 4, containing about 50% phosphorus and 33% potassium. Fertilizer is used to increase yield or extend the flowering period. It is also believed that it improves the keeping quality of fruits and has a positive effect on their taste. Suitable for fruits and vegetables, flowers, shrubs and trees; for its versatility and is loved by gardeners. The fertilizer is not recommended for preparing plantings in open ground for winter; it is best to use it in the summer, especially if it is not hot and moderately humid.

Monopotassium phosphate can be purchased in granular or powder form. It is sold in small packages (usually 20-25 g) and large packages (from 500 g to several kg). The drug should be stored only in well-ventilated areas, avoiding dampness. Potassium monophosphate easily absorbs moisture; When wet, it becomes inconvenient to use.

ALL the pros and cons of potassium monophosphate

The addition of potassium monophosphate has a number of benefits: does not give side effects, it has almost no effect on the acidity of the soil, is easily absorbed by plants, increases the resistance of crops to powdery mildew and other fungal diseases. The composition does not contain harmful chlorine salts, heavy metals and sodium, so even a high concentration of solution for feeding and spraying plants will not lead to burns of leaves and roots. Potassium monophosphate is compatible with pesticides, suitable for tank solution preparation and complex treatment.

To the number shortcomings include the fact that it does not accumulate in the soil and quickly disintegrates; application in solid form will not give anything at all - only a solution is used for feeding. It is not recommended to use the drug more than twice a season, as it can cause rapid growth of weeds.

Potassium is not able to accumulate in the soil, it is better retained in heavy soils (loams, clayey soils), in light soils there is less of it, the most potassium-poor soils are peaty ones.

Potassium monophosphate and other potash fertilizers

Main advantage in comparison with similar fertilizers, it promotes the formation of side shoots with flower stalks. But if you grow large-flowered varieties for cutting, bushiness, on the contrary, will become a significant drawback.

Potassium monophosphate is also considered an ideal fertilizer for tomatoes, as it contains all the substances they need. Potassium chloride is contraindicated for this crop, as well as for some other chlorine-sensitive plants. In addition, potassium monophosphate is suitable for foliar feeding, which not all potash fertilizers can boast of.

Uses of potassium monophosphate

Fertilizing is carried out with working solutions of the drug. Plants are watered, sometimes sprayed (usually in the evening hours so that the liquid does not evaporate longer) or used in drip irrigation systems. Emergency foliar feeding is recommended after prolonged rains to replenish the supply of potassium washed out from the above-ground parts of plants.

In general cases, the manufacturer suggests using the following dosage:

For seedlings of vegetable and flower crops make a solution of 7-10 g/10 l of water, carry out 2 feedings: the first in the phase of 2-3 true leaves at the rate of 3-5 l/m2 of planting, and the second 10-15 days after picking or after planting seedlings in the ground ( from the phase of 5-6 leaves, you can increase the dose to 5-10 l/m2);

For vegetable crops make a solution of 7.5-15 l/m2, carry out 2 feedings: the first at the beginning of fruiting, the second after 15-20 days - all at the rate of 5-10 l/m2;

For fruit and berry and ornamental shrubs make a solution of 10-15 g/10 l of water and carry out 3 feedings: the first after flowering, the second after 15-20 days and the third in mid-September - all at the rate of 10-20 l/m2.

Features of the use of potassium monophosphate when growing tomatoes (tomatoes)

Used for poorly growing tomatoes, especially for varieties with a poorly developed root system. If you notice that the edges of the leaves begin to dry out and curl, their color darkens, and green veins appear on the fruits, then you cannot do without fertilizer: in combination, potassium and phosphorus give an even more powerful effect than individually, improving the quality of the fruits. In productive years, it is advisable to lengthen the interval between fertilization to 3 weeks.

Features of the use of potassium monophosphate when growing cucumbers

It is usually used to ensure that cucumber fruits grow evenly, look neat and do not have a pear-shaped, curved shape. Cucumbers should be fed very carefully: excess potassium is harmful to them and can lead to a decrease in magnesium in the composition. Therefore, to begin with, test the solution only on a few plants and check their condition after a couple of days. If it is noticeable that they have begun to grow better, then continue in the same spirit; but if a yellow-green mosaic color appears on the leaves, it is better to reduce the concentration.

Features of the use of potassium monophosphate when growing grapes

Typically, grapes are fed with potassium magnesia in the second half of summer and in preparation for winter. But if the summer was cool and humid, the vines do not have time to get enough potassium, they have a hard time surviving the winter, and the harvest next year will be poor. In this case, intensive pre-winter preparation of grapes using potassium monophosphate is justified. You can feed it either with water for irrigation or as foliar feeding (in the latter case, it is not recommended to take a concentration higher than 1-2 g/l of water - which is also true for most other berry crops).

Features of the use of potassium monophosphate when growing potatoes

Potatoes respond very well to complex fertilizers, so potassium monophosphate is also indicated for it. Usually only foliar feeding is used (the concentration of the solution should not exceed 2-5 g/l of water), about 2 times per season. When watering with a solution, the root system grows too much - to the detriment of the quality and quantity of tubers.

Signs of potassium deficiency in plants

As a rule, potassium deficiency does not appear immediately, but by mid-summer:

• plants become faded and stop growing;
• shoots become thin;
• the leaves turn yellow, then turn brown, die along with the petioles;
• the leaves become wrinkled and curl into a tube;
• Sometimes plants bloom unnaturally profusely and then form small fruits.

1. It is better to apply potash fertilizers during autumn digging.
2. If the soil is light, then potassium-containing fertilizers are applied in the spring, since it is quickly washed out of such soils.
3. Potassium fertilizers are used together with calcium-containing or lime fertilizers, since they have high acidity.

Illustrations for the material: Shutterstock/TASS, Olga Petina, Viktor Khabarov, Alexandra Kirillina

Used for gardening and feeding indoor plants. After applying fertilizer, the seedlings begin to bloom wildly and bear large fruits. In addition to feeding plants with micronutrients, potassium monophosphate protects them from pests and fungal damage. The sugar contained in the fertilizer improves the taste of the fruit and increases the shelf life of the crop.

Description

The agricultural product is a concentrated crystalline granular powder of white or light beige color, easily soluble in water. Increasing the water temperature accelerates the dissolution of the granules.

Potassium monophosphate fertilizer contains the following ingredients:

• phosphorus oxide - 50%;
• potassium oxide - 30%;
• orthophosphoric acid - 20%.

Due to the presence of orthophosphoric acid, the powder quickly dissolves in water.

Advantages:

• there are no harmful compounds and heavy metals;
• improves the taste of fruits;
• protects crops from powdery mildew and fungi;
• protects seedlings from temperature changes;
• maintains soil moisture in greenhouses;
• increases the flowering time of domestic plants;
• does not acidify the soil.

Potassium monophosphate promotes the resistance of seedlings to adverse weather conditions and protects against pests and diseases. The substance in powder form is instantly absorbed by the soil and absorbed by the root system of crops.

Monopotassium phosphate is compatible with pesticides, which allows complex treatment of plants in open ground. Agronomists advise mixing pesticides with fertilizer in one container.

This agrochemical also has a beneficial effect on soil microorganisms: they are in comfortable conditions and actively structure the soil. This is especially valuable for soil in greenhouses, which is often prone to drying out. Due to the presence of soil microorganisms in greenhouse soil, the amount of irrigation is significantly reduced.

Flaws

Monopotassium phosphate is not without its disadvantages:

• Only an aqueous solution is working;
• not suitable for pre-winter soil preparation due to rapid decay;
• requires certain temperature and light conditions;
• increases the number of weeds;
• loses properties when moistened;
• not suitable for feeding grapes;
• not suitable for feeding flowers for sale;
• not suitable for some types of indoor flowers.

Potassium monophosphate is completely unsuitable for use in the solid state; it can only be used for fertilizer in the form of an aqueous solution. This feature of the agrochemical makes it unsuitable for filling the soil before winter.

Fertilizer is capricious and demanding of certain conditions: the ambient temperature should not be hot, and the humidity should be moderate. The use of monopotassium phosphate in greenhouses requires good lighting and regular ventilation.

Potassium monophosphate is loved not only by cultivated plants, but also by weeds. This should be kept in mind, since you will have to actively fight weeds. If you do not live near the area being treated, adding monopotassium phosphate to the soil will cause wild growth of weeds instead of seedlings.

The agricultural product instantly loses its working properties in the light and in dissolved form, so the prepared mixture must be used immediately. Also, do not allow the granules to get wet during storage. If you have a small plot, it is best to buy agricultural products in small packages.

If you grow flowers for sale, this fertilizer will cause problems instead of benefit. Increased tillering will spoil the presentation of roses and other decorative flowers. The bushes become very lush, side shoots with buds appear on them.

Why is monopotassium phosphate not suitable for feeding grapes? This plant most of all needs magnesium, which is poorly compatible with monopotassium phosphate.

If you have accustomed the seedlings to constant nutrition with potassium, you should carry out emergency root and foliar feeding after heavy rains. Precipitation instantly washes potassium from the soil, and plants will begin to experience potassium starvation. For root feeding, dilute 30 g of fertilizer per bucket of water. To spray the leaves, dilute 5 grams of substrate in a bucket of water.

Nitrogen Compatible

Nitrogen is necessary for seedlings to form green mass and for the high-quality absorption of potassium and phosphorus from the soil. Monopotassium phosphate does not conflict with nitrogenous fertilizers, however, the substances should not be combined in one container for work. Agronomists advise taking a break between applying nitrogen and phosphate fertilizers for 3-5 days. First, the potassium-phosphorus component is added, then nitrogen.

How to use potassium monophosphate

Potassium monophosphate is used when planting seedlings in the spring, as well as to nourish flowers during flowering. Applying fertilizer under flowers affects the growth of side shoots, which increases the splendor of ornamental plants. Monopotassium phosphate increases the flowering period of indoor and garden plants. The powder is diluted in water, the ground is watered and the plants are sprayed.

How to properly water plants with a solution? Firstly, fertilizer should be applied to pre-moistened soil. Secondly, this must be done in the evening or in the morning before dawn. When spraying leaves, do not allow droplets to roll off. Spraying should be done using a nozzle that sprays a cloud of tiny droplets of solution.

Important! Potassium monophosphate cannot be used in combination with agricultural products that contain magnesium and calcium.

Tomatoes

To feed tomatoes, use a 15% solution (take 15 grams of fertilizer per bucket). Seedlings are treated twice a season with an interval of two weeks. For 4 seedlings, a bucket of ready-made solution is consumed. In the intervals between root feedings, you can irrigate the bushes with a sprayer. For irrigation, prepare a 2% solution (2 g per bucket). The bushes are also irrigated after heavy rains or during frequent rains.

Important! Spraying the bushes protects them from fungi, pests and powdery mildew.

Is it possible to soak plant seeds in the solution? This should not be done: the effect of the potassium preparation on seeds differs from its effect on seedlings.

cucumbers

Feeding cucumbers is carried out in the same way as tomatoes. However, there are also differences. For example, the application of fertilizer by spraying will depend on the quality of fruit formation. Normally, a young cucumber should have a straight shape with a thickening on the petiole. If the fruit becomes curved or takes on a shape unusual for cucumbers, then it is necessary to add potassium monophosphate.

Note! With potassium deficiency, cucumbers become bitter.

Potato

Irrigation of tops leaves is used to feed potatoes. To do this, 10-15 grams of granules are dissolved in a bucket and the solution is sprayed in the evening or in the morning. The first spraying is carried out after hilling, the second - after the buds have set.

The tops become strong and do not fall to the ground. After fertilization, the tubers become large and dense. Feeding is carried out twice a season. However, when monopotassium phosphate is applied, the number of weeds will immediately increase, so agronomists advise combining fertilizing with the application of pesticides.

Important! When working with agrochemicals, you must wear a respirator, gloves and safety glasses.

To feed root crops in open ground, take 20 grams of monopotassium phosphate per bucket of water.

Flowers

For indoor flowers and seedlings, take 10 grams of monopotassium phosphate per bucket of water. Treatment of garden flowers is carried out during the formation of buds, but it can also be done after opening. To speed up the opening of the buds, you can make a more concentrated solution - 20 g per bucket.

Strawberry

To feed strawberry bushes, take 30 grams of powder (spoon) per bucket of water. The solution is enough for five berry bushes. Don't forget to water your strawberries generously before fertilizing. Watering is carried out during flowering. After fertilization, the fruits quickly gain sugar and become tasty and juicy. Potassium accelerates metabolic processes and promotes compaction of leaf and berry mass. Sometimes ash is used instead of potassium monophosphate: they can be combined.

Precautionary measures

Since the agrochemical is a bulk substance, it must be stored in a well-closed container. Make sure that the room is well ventilated, otherwise there will be a concentration of substances toxic to the body in the air.

When working with an agrochemical, you must take precautions: wear rubber gloves, protect exposed skin from contact with the solution. If drops of the solution get on the skin, it is necessary to rinse the affected area with a sufficient volume of running water. If the solution penetrates the esophagus, induce vomiting and rinse the stomach thoroughly.

Alternative

How can you replace potash fertilizers? An alternative source of potassium is wood ash. It can be obtained by burning tree branches, sawdust or straw. However, potassium concentration may vary. For example, when burning straw you will get a 30% substance content, when burning birch branches - 13%, when burning coniferous trees - 5%.

The advantage of using wood ash over potash fertilizer is the ability to fertilize during autumn plowing. Ash can also be periodically applied under the bushes of seedlings, slightly loosening the soil at the roots. Combining ash with nitrogen will give excellent results and increase productivity. Alternating spraying with potassium monophosphate and adding ash under the bushes of seedlings will provide the plants with constant nutrition throughout the growing season.

Bottom line

Potassium monophosphate fertilizer is an excellent method of foliar feeding of garden plants and house flowers. The white granular powder dissolves well in water and is quickly absorbed by the soil. Garden crops produce a rich harvest of juicy and tasty fruits, ornamental plants form lush bushes and delight the eye with flowering for a long time.

Monopotassium phosphate does not contain heavy metal salts, nitrates and chlorine, which ensures the safety of its use for feeding fruit crops. The agricultural product does not burn the leaves and roots of seedlings and does not leave harmful residues. Fertilizer can be purchased at any gardening store at a low price.

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Let's today pay attention to a preparation for the garden and vegetable garden, a fertilizer, using which you will significantly increase the yield, quality of fruits and vegetables, and protect plants from diseases. A prominent representative of mineral fertilizers, completely soluble in water, potassium monophosphate is used to feed open ground plants, greenhouses and greenhouses. Also recommended as an excellent foliar feeding.

Contains monopotassium phosphate 33% potassium and 52% phosphate. The excellent effect of fertilizing is explained by the high absorption by plants of pure chemicals that nourish the plants. Potassium monophosphate is also used to prepare various mixtures for plant nutrition. The main value of potassium monophosphate lies in the purity of chemical compounds. It contains no harmful substances - heavy metals, sodium and chlorine.

What are the benefits of using monopotassium phosphate?

• it will improve the flowering of crops,
• will increase fruiting,
• will protect plants from many diseases, even cure powdery mildew,
• will improve the taste of fruits, as they accumulate more sugar,
• will increase the shelf life of vegetables,
• plants completely absorb all the substances contained in potassium monophosphate,
• an aqueous solution of potassium monophosphate is well used in greenhouses to moisten the soil,
• plants treated with monopotassium phosphate are more resistant to low temperatures and other adverse weather conditions.

It happens that tomatoes bloom, but the fruits do not set. This could be caused by early planting of seedlings, infrequent watering, errors in the use of nitrogen fertilizers, or lack of phosphorus. They will help correct the situation feeding with potassium monophosphate- super concentrated phosphorus fertilizer with potassium. When the tomatoes bloom, make this solution: 10 grams of potassium monophosphate + 10 liters of water and water the plants with it.

How to use potassium monophosphate?

For foliar feedingmake a solution whose concentration should be 0.2%.

For seedlings of vegetables and flowers- 9 grams per 10 liters of water. Carry out the first feeding in the phase of 3 true leaves, the second 10-15 days after picking or planting seedlings in open ground.

For vegetables6-15 grams of potassium monophosphate per 10 liters of water. Fertilize the first time as soon as roots and tubers begin to form, and the next time after 2-3 weeks.

For fruit and berry bushes and treesprepare a solution of 9-15 grams of potassium monophosphate per 10 liters of water. Immediately after flowering, carry out the first feeding, and the next one after 2-3 weeks, do the third feeding in the first ten days of September.

Using potassium monophosphate in the fall will help plants tolerate frost well. Lovers of indoor plants should also pay attention to this fertilizer, which prolongs the life of buds and is well suited for fertilizing during flowering.

Foliar feeding Apply potassium monophosphate early in the morning or in the evening, then the solution, evaporating more slowly, will last longer on the leaves of the plants.

We wish you healthy and rich harvests.

In order to grow an excellent harvest, people use various types of fertilizers that fill the soil with useful substances. One such drug is potassium monophosphate. This fertilizer can be used in the garden, in the vegetable garden, and even for growing indoor plants.

This mineral fertilizer, which is a concentrate, is a white powder. This drug is used as a fertilizer for any plants. It dissolves easily in water and absorbed by soil in the shortest possible time, which guarantees quick results.

When using this type of fertilizer, plants begin to bloom profusely and the number of fruits increases. The risk of fungal diseases is reduced.

Fruits and vegetables grown using potassium monophosphate receive a large dose of sugar even during ripening, which significantly improves the taste and increases the shelf life of the fruit.

Recently, this mineral fertilizer has been very often used by summer residents in their gardens and vegetable gardens, as well as by lovers of indoor flowers. This popularity of the drug is understandable. After all, this fertilizer has a large number of advantages.

Positive qualities of potassium monophosphate

Uses of potassium monophosphate

Since this fertilizer is a concentrate, a solution should be prepared from it, which will later be used for watering plants. In order to make the solution correctly you need read the instructions carefully, which is on any package.

The drug is used not only at home. This fertilizer is also used quite often in fields and greenhouses.

If you have a large garden, a lot of trees in the garden, and at home there are an abundance of indoor plants on the windows, then potassium monophosphate will an indispensable assistant. He alone will cope with feeding all plants and you will not have to select your own fertilizer for each type.

You can purchase potassium monophosphate at any gardening store or for indoor plants. Usually the drug is packaged in 0.5 kg plastic bags or 25 kg bags.

Safety precautions when using potassium monophosphate

Store in a well-ventilated area. Keep out of reach of children and animals.

Use only with rubber gloves. Make sure that when working with the solution, the liquid does not come into contact with exposed skin and especially mucous membranes.

If the drug gets into your eyes or skin, rinse these areas thoroughly with clean running water. If, while working with the solution, it accidentally enters the stomach, it is necessary do urgent rinsing, for this it is necessary to induce vomiting.