What is dolomite flour and how to use it. Dolomite flour: rules for use at their summer cottage

Dolomite flour is called crushed dolomite - rock, whose chemical formula looks like CaMg(CO2). This is an effective tool for reducing the level of soil acidity, the main advantages of which include, first of all, affordable price and ecology. It is thanks to this that the fertilizer described in the article is very popular among owners of suburban areas.

Features and advantages over other means

The use of dolomite flour is convenient way reducing soil acidity. The substance is a crystalline mineral with a light color (gray or white, rarely reddish) and a characteristic luster.

A feature that distinguishes dolomite chips from other means of a similar action is not only a lower cost, but a much lower consumption. Furthermore, slaked lime, for example, which contains a hydroxo group and a calcium ion, reduces the acidity of the soil too sharply, as a result of which plants that are unable to get used to such conditions begin to absorb phosphorus very slowly. That is why lime is applied only in the fall after harvesting - in this case, the soil will still have enough time to gain chemical equilibrium for the new gardening season.

Another powerful deacidifier is wood ash. The concentration of calcium salts in it - the main active ingredient- fluctuates between 30-60%, but the difficulty is that it is not possible to determine the exact composition. The concentration of calcium salts depends, first of all, on the rock from which the ash was produced, on which parts of the plants were used (branches, trunk, etc.), as well as on the characteristics of the soil and climate conditions in that region, where these trees grow. Independently, without resorting to chemical analysis, it is impossible to accurately determine the required amount of ash, which means that people act at random. By the way, ash is usually used for seedlings and flowerpots, because it contains a lot of phosphorus and potassium.

Note! The volume of ash or lime should be approximately twice as large as that of dolomite flour, subject to the same area.

How does dolomite affect the soil

In the described fertilizer, as noted above, a large percentage of calcium. If the soil is used for a long time under fruit plants, then over time its chemical characteristics deteriorate, which means that the lost elements must somehow be replenished. The use of dolomite flour makes it possible to artificially maintain the required concentration of hydrogen and calcium ions.

Penetrating into the soil, this fertilizer not only normalizes its acidity, but also enriches it with microelements necessary for plants. But when and how should fertilizer be applied? One of the differences between the mineral is its versatility: not only can you fertilize the site almost all year round, but flour also increases the yield of all crops: vegetables, fruits and grains. Finally, the efficiency of fertilizer is equally high in the garden, in the greenhouse and even in the house (if we are talking about indoor plants).

But it is especially effective on:

sandy soil;
soil with a low concentration of magnesium.

As for the soil with a neutral pH level, it is better not to use flour here, because this can cause a violation of the natural chemical balance.

The fertilizer applied to the soil has the following effects:

improves its biological characteristics;
improves plant photosynthesis;
increases the concentration of various minerals and trace elements that are necessary for plants;
helps to bring out environmentally friendly products;
increases the effectiveness of other means applied to the soil;
improves productivity;
improves the quality of nutrition of crops;
finally, due to the presence of calcium in its composition, the flour activates the development of both ground and underground parts (rhizomes).

Note! In addition to all this, dolomite flour is an excellent remedy for harmful insects which is completely non-toxic. Small particles of the product play the role of an irritating abrasive that destroys the chitinous shells of insects.

Video - Soil deoxidation with dolomite flour

Methods for determining acidity

In order to determine right amount fertilizer, you must first find out what the mechanical composition of the soil is (for example, clay or sandy) and its acidity level. Usually, disposable tests or other special devices (for example, the KS-300V soil analyzer) are used for this, which are sold in all gardening stores.

Acidity is expressed in pH, it is indicated by numbers from 0 to 14 and can be:

weak (more than 7);
neutral (pH is 7);
high (less than 7).

By the way, it is possible to determine the acidity of the soil with the help of improvised means.

Determination of soil acidity by improvised means

Method number 1. Pour a small amount of table vinegar onto a handful of earth.

If as a result a violent reaction began with the formation of foam, then the earth is either neutral or non-acidic.

The absence of a reaction (the vinegar simply soaked into the soil) indicates that the acidity is increased.

Method number 2. In a glass of grape juice, you need to lower a lump of earth.

If the color of the contents changes, and bubbles form on the surface, then the soil is either neutral or slightly acidic.

Method number 3. weed plants will not grow on soil that is not suitable for them in terms of acidity. That is why they can be used as a kind of indicators indicating the level of pH.

On soil with low acidity, coltsfoot, clover and wheatgrass grow.

On soil with neutral acidity - nettle, quinoa.

If the acidity is high, then plantain and wood lice will grow on the site.

Note! The effectiveness of the fertilizer will increase markedly if boric acid is applied along with it in combination with copper sulphate.

Another useful video that can help in determining the properties of the soil before the deoxidation procedure.

Video - Folk methods for determining the pH level

Dolomite flour how to use in the garden

The specific proportions of the mineral depend on the level of acidity. So, approximately 0.6 kg / m? should be added to acidic soil, if it is slightly acidic, then no more than 0.35 kg / m?, and if neutral, then a maximum of 0.5 kg / m?. If the soil on the site is sandy, then the amount of flour should be reduced by one and a half times, and if it is clayey, it should be increased by about 15%.

Note! It is possible to increase the efficiency of fertilizer by distributing it as evenly as possible. If the flour is sprinkled correctly, then the benefits from it will be enough for about eight to ten years.

Do not forget that plants react differently to the application of the product. In this regard, cultures can be divided into several groups.

Table. Groups of plants according to sensitivity to acidity

Group	Short description
	These plants include sainfoin, beets, alfalfa and cabbage. All of these plants are comfortable with a neutral or low level of acidity. You can increase the yield by applying the product to non-acidic soil.
	Onion, barley, wheat, clover, beans, soybeans, cucumbers and corn cannot grow on acidic soils. Ideally, such crops should be planted on soil with weak or neutral acidity.
	This group includes timothy, carrots, radishes, tomatoes, millet, buckwheat, and rye. All these plants grow equally well on soils with a pH level of 4 to 7.5.
	This includes potatoes and flax. For example, if you grow potatoes in acidic soil, then sooner or later it will become infected with scab, which will significantly reduce the level of starch in the tubers. Flax under such conditions will become infected with calcium chlorosis, which will lead to a deterioration in the quality of the fibers.

When to fertilize?

As noted above, the described fertilizer can be used regardless of the season, since it does not affect either the composition of the soil or the intensity of absorption of other useful substances. But in most cases, flour is scattered before using other fertilizers, since it does not organically interact with all of them.

If vegetables are grown on the site, then dolomite flour crumbles in the spring, two to three weeks before planting. This tool not only nourishes, but also sanitizes the soil, which is especially important, for example, for potatoes prone to various diseases, whose development dolomite can stop. In addition, it is important for potatoes that the fertilizer fights pests. What about crop nutrition? closed type, then the introduction of the mineral in the greenhouse will prevent the spread of fungi.

In autumn, it is recommended to fertilize the soil for fruit bushes and trees. Here, about 2 kg of fertilizer must be applied under each tree (along the edge, with a slight depth), and for shrubs - from 0.5 kg to 1 kg (it all depends on size) in a similar way.

Dolomite must not be mixed with superphosphate, urea or ammonium nitrate, otherwise a dangerous reaction may start.
Clay soil should be fertilized annually.
Gooseberries or sorrel cannot be fertilized with flour.
The fertilizer should be distributed as evenly as possible, thoroughly mixing with the soil and loosening by about 15 cm (except for shrubs and trees).
In the spring, vegetables can be periodically watered with dolomite "milk" (a mineral diluted with water).
Manure is also good for the soil, but it is forbidden to mix it with flour. First you need to scatter fertilizer, then - manure, and only after that the site can be dug up.
Turnip and cabbage yields will improve if flour is applied directly at the time of planting.
Plums with cherries need to be fertilized every year after harvesting the fruits (dosage is described above). So the fruits will be large and juicy.
When growing blackcurrant, flour should be sprinkled every two years (0.5-1 kg per bush, depending on size).

As a result, we note that dolomite flour acts gradually, so you should not expect an instant positive effect. Greatest Benefit observed two to three years after fertilization - the yield increases by 10-15%.

The basis of dolomite flour is calcium, which affects the increase in plant growth, the improvement of the root system; - magnesium, which is part of chlorophyll and participates in photosynthesis.

What is dolomite flour?

Dolomite flour is a carbonate-magnesian rock. Fractions of dolomite flour: 0-2.5 mm, with a permissible residue on a sieve of 3 or 5 mm from 1 to 7%, depending on the class and brand. Dolomite stamps flour A,B,C. Classes 1, 2, 3, 4 for each brand, respectively. Dolomite flour according to GOST 14050-93 is used in agriculture for soil deoxidation. Problems with growth and development in acidic soils are noticeable in many plants. Without the introduction of dolomite flour, other fertilizers are not even absorbed into in full. The introduction of dolomite flour into the soil reduces acidity - Ph, which provokes crop growth, and also significantly increases the effectiveness of additionally applied fertilizers.

The chemical composition of dolomite flour

Chemical formula: CaCO3+MgCO3

in terms of dry matter - 91.9%
including the mass fraction of Ca - 36.1%
moisture - 0.4%
residue insoluble in HCI - 4.94
metal-magnetic impurity - 0.1 mg/kg

The results of the use of dolomite flour

Nutrition of cultivated crops is increasing
The chemical and biological properties of the soil are improved
Cultivated crops begin to better absorb the necessary substances from the soil, including fertilizers
Dolomite flour binds harmful radionuclides
The growth and development of the root system is significantly improved
The process of photosynthesis increases
Completely non-toxic dolomite flour, due to fine grinding, destroys the exoskeleton of the insect, acting as an abrasive.

Methods of using dolomite flour in agricultural technology

Dolomite flour is a grinding of dolomite, is a valuable lime fertilizer for many crops: carrots, beets, potatoes, clover, alfalfa, buckwheat, onions, flax, etc. Dolomite flour is applied as in open ground, and indoors - a greenhouse, a greenhouse, special efficiency is manifested on sandy and dry soils poor in magnesium sandy soils. Limestone flour is not used on neutral soils. The frequency of application is once every 3-4 years, while:

improve the physical, physico-chemical and biological properties of the soil
the amount of digestible forms of nitrogen, phosphorus, potassium, molybdenum increases in the soil; increases the efficiency of the use of applied organic and mineral fertilizers
improved nutritional conditions for plants
the safety and quality of products increases
binds radionuclides, i.e. contributes to the environmental cleanliness of the crop
enriches the soil with calcium, which promotes plant growth, improves the condition of the root system
enriches the soil with calcium and magnesium, which is part of chlorophyll and is involved in photosynthesis
effective insecticide. Possessing absolute non-toxicity in relation to any living beings, finely ground dolomite causes abrasive destruction of chitinous covers in insects. The strongest impact occurs at the joints.

Dolomite flour application rates

Application rates depend on the acidity and mechanical composition of the soil and fluctuate:

Acidic soils (pH less than 4.5): 500-600 g per 1 m2 (5-6 t/ha)
Medium acidic (pH 4.5-5.2): 450-500 g per 1 m2 (4.5-6 t/ha)
Slightly acidic (pH 5.2-5.6): 350-450 g per 1 m2 (3.5-4.5 t/ha)

On light soils, the dose is reduced by 1.5 times, and on heavy clay soils it is increased by 10-15%. When applying for a more effective action, it is necessary to achieve a uniform distribution of limestone flour over the entire area of \u200b\u200bthe site. When making a full dose, the effect of liming persists for 8-10 years. The effectiveness of dolomite flour increases with the simultaneous introduction of boric and copper microfertilizers (boric acid and blue vitriol).

In relation to the reaction of the environment and responsiveness to liming (the introduction of dolomite flour), crops are divided into several groups:

the first group - crops that do not tolerate acidic soils: alfalfa, sainfoin, sugar, table and fodder beets, cabbage. They grow well only with a neutral or slightly alkaline reaction of the soil environment (pH 7-7.5) and respond very actively to the introduction of lime even on slightly acidic soils.
the second group - crops sensitive to high acidity: barley, spring and winter wheat, corn, soybeans, beans, peas, vetch, broad beans, clover, cucumber, onion, lettuce. They grow and develop better at a reaction close to neutral (pH 6-7) and respond well to liming not only strongly and medium acidic, but also slightly acidic soils.
the third group - crops that are slightly sensitive to increased soil acidity: rye, oats, millet, buckwheat, timothy, radishes, carrots, tomatoes. Cultures of this group can grow satisfactorily in a fairly wide range of soils - from acidic to slightly alkaline (pH from 4.5 to 7.5), but soils with a slightly acidic reaction (pH 5.5-6.0) are most favorable for their growth. They respond positively to liming of strongly and moderately acidic soils in full doses, which is explained not only directly by a decrease in acidity, but also by the effect of improving plant nutrition with nitrogen and ash elements after liming.
the fourth group - crops requiring liming only of medium and strongly acidic soils. So, low acidity practically does not affect the yield of potatoes, and flax grows even better with a slightly acidic reaction of the soil environment (pH 5.5-6.0). High doses of Ca-CO3 with insufficient application of fertilizers, primarily potassium ones, adversely affect the quality of the products of these crops: potatoes are severely affected by scab, the starch content in tubers decreases, and flax becomes ill with calcium chlorosis, fiber quality deteriorates. These effects are associated not so much with the neutralization of acidity, but with a decrease in the soil during liming.

The use of dolomite flour

The amount of dolomite introduced depends on:

expected change in pH - more acidic soils require more dolomite
soil absorption capacity (cation exchange capacity) - silty and clay soils need higher doses of dolomite than sandy soils. Soil organic matter has high capacity absorption for lime. Heavy clay soils require annual liming
rainfall - rain and melt water leach calcium and magnesium from the soil

When liming, the task is to evenly distribute and thoroughly mix the dolomite with the soil with the top 15-20 cm of soil. If you scatter dolomite over the surface, then the result will also be, but it will affect not earlier than in a year. The introduction of dolomite with manure is very effective in reducing acidity, but they cannot be mixed. First, dolomite is scattered, then manure and then dug up. The amount of manure is not less than 4-5 kg/sq.m., dolomite is the design norm (usually within 200-500 g/sq.m.).

Dolomite does not burn plant leaves and can be spread on pastures and lawns. Lime can be applied at any time of the year, it's just more convenient to do it before winter. You can apply lime once every few years, but it is better to do it a little each year. Stone fruit trees (cherry, plum, apricot) require an annual application of 1-2 kg. per tree over the area of the near-stem circle after harvesting. For blackcurrant, 0.5 - 1 kg is applied. under the bush 1 time in 2 years.

Under vegetable crops, especially cabbage, dolomite flour is applied before planting. For potatoes, tomatoes, dolomite flour is applied in advance. Under gooseberries, cranberries, blueberries, sorrel, dolomite flour is not used. Dolomite flour, as well as lime, cannot be mixed with ammonium nitrate, ammonium sulfate, urea, simple superphosphate, granular superphosphate, double, manure.

The return from liming depends on the degree of soil acidity, the characteristics of cultivated crops, the rate and type of lime fertilizers. The more acidic the soil and the higher the rate of lime, the more effect from lime. Since lime fertilizers interact slowly with the soil, greatest effect from liming appears in the second or third year after application.

Liming significantly increases the effectiveness of organic and mineral fertilizers. Decomposition is accelerated on acidic soils after liming. organic fertilizers, and the latter enhance the positive effect of lime on soil properties. With the joint application of lime and manure, it is possible to halve the dose of manure, while the effectiveness of mineral fertilizers will not decrease. Liming is especially favorable when making physiologically acidic ammonia and potash fertilizers that can acidify soils, as well as under crops that react negatively to increased acidity.

Advantages of dolomite flour: Calcined lime and fluff to eliminate excess acidity are used much less frequently, since these products act much harder than limestone flour, which often leads to local overdoses, burns and burning of plants.

Liming according to the Mitlider method

In the Mitlider method, lime (more precisely, mixture number 1: ground limestone or dolomite plus 7-8 g boric acid for each kilogram of lime) are brought in for digging at each change of crop, along with filling the soil with mineral fertilizers. For heavy soils and peatlands, 200 g per running meter narrow ridge, for light soils, 100 g/r.m. In the southern regions, on saline and alkaline soils, gypsum is used in the same amount.

Packing and storage of dolomite flour

To protect against moisture, it is packaged in big bags with a polypropylene liner weighing 1000 kg, which is important for agriculture. All our products are stored in a covered warehouse. The shelf life of dolomite flour is limited because moisture accumulates in the package over time, in which case the product must be dried or repackaged, otherwise it must be used.

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To begin with, let us explain that dolomite is a mineral from the carbonate class, which has a crystalline structure. It has a glassy luster, and the color can be very diverse - grayish, white, slightly reddish and even brownish. Dolomite flour is obtained by grinding minerals to a powder and further drying. All this is done in a production environment. Dolomite flour contains 8% more calcium than lime. And another important difference from lime is the presence of about 40% magnesium in dolomite flour. If there is little magnesium, then the plants stop in development and growth, appears brown spotting and chlorosis. The price of this fertilizer is relatively low, and a lot of useful properties are found, which contributed to its popularity among gardeners.

The benefits of dolomite flour

It is possible to make dolomite flour not only in open ground on beds, but also in greenhouses and hotbeds. Yes, and flower growers widely use it. Its use is especially good on sandy and sandy soils, poor in such an element as magnesium. What to expect if you periodically add it to the ground?

Improved biological, physico-chemical and physical properties soil. The increased acidity of the soil is neutralized.
In the soil, there is a significant increase in the amount of forms of phosphorus, potassium, nitrogen, and molybdenum that are readily available to plants.
There is an increase in the efficiency of those fertilizers that summer residents make, especially manure.
The soil is enriched with calcium, while the root system of plants improves.
The soil is saturated with magnesium, which is integral component chlorophyll actively involved in photosynthesis.
Plants feed better, change in better side their conditions of detention.
The crop becomes better, more environmentally friendly (radionuclides are neutralized), better and longer stored in the winter.
It can be used as a means of controlling insect pests, because well-ground dolomite destroys the chitinous covers of insects dangerous to plants.

How to use correctly?

The amount of dolomite flour that needs to be applied to the garden depends on the acidity of the soil on this place and mechanical composition of the soil mass. MirSovetov will name only average norms:

acidic soils (environment reaction less than 4.5) - on square meter the area is brought from 500 to 600 grams;
medium acid (reaction of the environment in the range from 4.5 to 5.2) - per square meter goes from 450 to 500 grams;
slightly acidic (reaction of the environment from 5.2 to 5.6) - from 350 to 450 grams is taken per square meter.

If the soil is clayey, heavy, then the amount of this fertilizer is increased by 10-15%. For light soils, the dosage can be reduced by 50%.

You can check the soil and find out the acidity indicators by purchasing special devices or tests at a garden store or center.

The efficiency of use increases if copper sulfate and boric acid are added at the same time.

Agricultural crops are divided into the following main groups, depending on how they relate to the reaction of the environment in which they grow and liming:

Not tolerant of acidic soil - cabbage, beets, alfalfa. They need soil with a neutral or slightly alkaline reaction. They really like it when they are fed with dolomite flour.
Sensitive to living in an environment with high acidity - cucumber, lettuce, beans, onions, peas, corn, wheat, soybeans. For them, soil is preferable, the reaction of the environment of which is close to neutral, they respond quite well to the use of dolomite flour.
Slightly sensitive to an increase in soil acidity - tomatoes, carrots, radishes, oats, buckwheat. Grow quite normally with any reaction of the environment soil mixture, but the best results are shown on slightly acidic soils. If the soil has strong or moderate acidification, then dolomite flour can be given to the soil in full dosage. Then the plants will be better fed with nitrogen and ash compounds.
Requiring liming only for strongly acidic and moderately acidic lands. For example, flax likes to grow in slightly acidic soils. A slight acidity will not affect the yield of potatoes planted in this area.

Application features

On heavy clay soils, dolomite flour will have to be applied every year, on the rest - once every three years.

It is more convenient to do liming in the fall. But if necessary, dolomite is added in the spring or at any time.

When carrying out liming, distribute dolomite flour evenly over the entire surface of the soil to a depth of 15 cm, mixing thoroughly. If you just sprinkle dolomite on the surface, then the effect will be, but you will notice it not earlier than after 12 months.

Dolomite and manure can be added to the soil at the same time, but they cannot be mixed together. First, dolomite flour is scattered, then manure is spread, the third stage is digging.

The leaves will not be harmed if you scatter this flour over the lawn, pasture.

For cherries, plums, apply one or two kilograms of dolomite flour every year after you harvest.

Apply once every two years under each bush black currant about 500 grams of dolomite. If the bush is large, then you can add a kilogram.

Under cabbage, turnips, add dolomite when planting.

In the spring, you can water plants, for example, beets, clematis, with dolomite "milk" - water to which dolomite flour is added.

Do not apply this fertilizer under sorrel, gooseberry.

Under the flowers, dolomite flour is applied before planting - in a pot or hole, be sure to mix well with the rest of the components of the soil mixture. Hyacinths, orchids, violets respond positively to the introduction of dolomite flour.

You can not mix dolomite flour with urea, superphosphate, ammonium sulfate, ammonium nitrate.

If it turned out that the soil in your area has a neutral reaction of the environment, then liming is not necessary.

Positive results will not be noticeable immediately, and the greatest effect appears somewhere in the second or even third year after liming. Scientists believe that dolomite flour can increase the yield by an average of 4-12%.

It is made by grinding dolomite stone. This mineral is very common in our country. Today, its production volumes are quite enough to fully meet the needs of the state. Used this product in many areas National economy- in construction, animal husbandry, road construction, in the glass and paint and varnish industries. It has found the widest application in agriculture. How to properly use dolomite flour on suburban area and we'll talk further.

Use of dolomite flour for soil neutralization

These funds are used primarily to improve acidified soils. That on such a land it is impossible to obtain good harvest practically from no culture, it is known, probably, to all summer residents. The fact is that the roots of plants in acidic soil very poorly absorbed nutrients. Even the application of fertilizers and an increase in the "fat content" of the earth does not change the situation. One of the most effective means used to neutralize acidic soil is just dolomite flour. The use of this tool in the fall for digging is a great way to increase crop yields by next year. Limestone flour is applied in certain doses, depending on the degree of acidification of the site.

What other useful qualities does flour have?

Among other things, dolomite flour helps to loosen the soil and enrich it with useful minerals. minerals. For example, it contains a lot of calcium. This substance has an unusually beneficial effect on root system plants, increasing its efficiency. Horticultural and horticultural crops begin to digest faster and easier different forms substances such as nitrogen, phosphorus, molybdenum, potassium. Dolomite flour also contains magnesium. It is able to stimulate photosynthesis. This substance also has a beneficial effect on the vital activity of various microorganisms useful for plants.

The ability to prevent yield losses due to crop spoilage by certain insect species is also one of the useful qualities fertilizer such as dolomite flour. The use of this substance in autumn will lead to the destruction of the chitinous cover of beetles and worms wintering in the ground. This white dust has a particularly strong effect on the hard integuments of insects at the points of their articulation.

Another interesting property dolomite flour is that it is able to bind radionuclides. Therefore, after introducing it into the soil, you can get a much more environmentally friendly crop of horticultural and horticultural crops. It will keep much better.

How much dolomite flour should be added

In the event that the soil has an acid reaction over the entire area of \u200b\u200bthe site, in the fall it is worth completely filling it with dolomite flour. In this case, it is important to correctly calculate the required amount. The dosage depends largely on the composition of the soil. So,

If the soil on the site is loose and light, the dose should be reduced by 1.5 times. On heavy dense soils, on the contrary, it is increased (by 10-15%). The flour should be distributed throughout the garden as evenly as possible. Leveling is done with a rake. Then the soil is dug up on the bayonet of a shovel. Re-treatment of the site will need to be carried out after about 8 years.

Terms of application of limestone flour

Next, let's figure out when exactly dolomite flour can be introduced into the soil. The use of this fertilizer in the fall, as you already understood, is most appropriate. You can apply it to the soil in the spring when planting or even in the summer. However, it is the method of improving the soil with its use before winter that is considered the most effective. Usually, on light soils, dolomite flour is applied to the soil once every 2 years, on heavy soils - once a year. It is best to improve the soil with it in August-October, after harvesting this particular crop. Of course, it is important to observe the correct dosage. For example, flour is usually added to the trunk circles of currants in the amount of 500 g per bush. For cherries and plums, it is also used in the fall in the amount of 1-2 kg per plant. If necessary, you can use this tool twice a year - both in spring and autumn.

Which Plants Respond Best to Limestone Powder

Next, we will deal with exactly which plants limestone flour should be applied under. Dolomite flour, the use of which in the fall is a very effective procedure, can be used to increase the yield of almost any garden crop. From fruit trees stone fruits respond best to this substance. Also, when using it, the yield of vegetables is significantly increased. This method of improving the soil is most effective on cabbage. Also, this tool is often used to increase the yield of tomatoes, eggplants, peppers and potatoes. It is worth making flour for legumes, salads, barley and cucumbers.

In autumn, dolomite flour should definitely be sprinkled under everything. It can be garlic, winter onions, decorative garden plants etc. According to the results of research conducted by scientists, the use of lime flour can increase yields by 4-12%. The most noticeable effect from its use is manifested approximately one or two years after being introduced into the soil.

Of course, there are plants that do not respond too well to a substance such as dolomite flour. The use of this remedy in autumn or at any other time of the year under gooseberries or sorrel is not recommended. Do not use it under cultivated plants and if the soil on the site has a neutral or alkaline reaction.

Compatibility of dolomite flour with other fertilizers

It is also necessary to combine dolomite flour with other fertilizers correctly. In order to enhance the effect it produces, you can use it simultaneously with boric acid or with other substances containing them in their composition. Do not mix limestone flour with urea and ammonium nitrate. It does not mix well with manure either. Since the latter is used very often for plant fertilizer, it is still used simultaneously with dolomite flour. However, one must follow one important recommendation. In autumn, dolomite is scattered over the bed and only then manure. Then everything is dug up.

Which dolomite flour should be used in the fall

As already mentioned, most often limestone flour is used in the fall. When buying it, be sure to pay attention to quality. It is determined by the fineness of the grind. In addition, it also depends on the raw materials from which the flour was produced. Depending on these two factors, lime flour is divided into classes and groups. In agriculture, rather small (with particles up to 1 mm) dolomite flour is usually used. As a fertilizer, you can also use its burnt version. Such flour has the advantage over ordinary flour that magnesium is better absorbed by plants from it.

What is the conclusion from all this?

As you can see, limestone flour is a useful fertilizer and does not have any side effects on plants. negative impacts. Of course, only if correct use. The effectiveness of the use of dolomite flour is directly dependent on the correct dosage. Before applying this fertilizer, it is imperative to conduct research on the level of soil acidity. At pH greater than 6 is unnecessary. Do not use flour in combination with incompatible fertilizers.

Kirill Sysoev

Calloused hands do not know boredom!

Today at summer residents big choice fertilizers rich in trace elements and facilitating the fight against weeds and insect pests. Dolomite flour is in deserved demand as an effective limestone remedy for reducing soil acidity in vegetable gardens, which is often applied in autumn. Economical consumption, low price, environmental friendliness are the main advantages due to which the use of dolomite flour among gardeners is very popular.

What is dolomite flour

Dolomite or dolomite bait is a powdered fertilizer made from dolomite, a mineral of the carbonate class. The product of natural origin saturates the soil with useful substances, microelements, normalizing its acidity, improving the structure of the fertile soil layer. The mineral has a light brilliant color from white to gray color, rarely reddish. Fertilizer is obtained by crushing dolomite rock into small fractions.

Compound

Mineral formula: CaCO3 MgCO3. An excellent dressing rich in magnesium, calcium and does not require additional additives, it is used in its natural form after grinding to a powder state. The active composition of dolomite flour is, first of all, calcium: a component that is necessary for replenishment in the soil with increased soil acidity and deterioration of its qualities. The carbonate form of calcium and magnesium prevents their accumulation in fruits and vegetables in excess.

What is needed for

The addition of a mineral allows you to maintain the desired level of hydrogen and calcium in the soil. Deoxidation of the soil with dolomite flour is the main task of its application, but in addition to neutralizing acidity, the soil with fertilizer receives useful material for plants, weeds are reduced on the site, beneficial microorganisms (worms) are activated. Magnesium has a positive effect on the course of photosynthesis, and calcium-rich soils contribute to the rapid growth and good development ground parts and roots of plants.

The use of dolomite flour in the garden

Fertilizer is useful for vegetable crops (yields of potatoes, beets, onions, tomatoes, carrots), herbaceous plants(buckwheat, clover), fruits and berries (plum, cherry). A good result is achieved both when flour is applied throughout the site, and in beds in greenhouses and greenhouses on sandy loamy soils and with a low level of magnesium. With neutral soil acidity, dolomite fertilizer is not recommended, as the natural soil balance will be disturbed.

As a result chemical properties dolomites:

improve the biological properties of the soil;
the content of useful microelements, macroelements, minerals increases;
the effect of other fertilizers increases;
productivity increases;
improving the quality of products;
radionuclides are released.

Dolomite flour or lime, which is better

To deacidify the soil, lime fertilizers are often used, which are considered stronger for normalizing the level of soil acidity due to the form of calcium - hydroxide, which enhances the possibility of neutralization. However, limestone powder has its drawbacks. Immediately after its introduction, the necessary substances phosphorus and nitrogen are not absorbed, so the earth needs a break for planting. Lime flour is applied in the off-season to ensure a good time period before planting. Dolomite, which also contains magnesium, can fertilize the soil at any time.

Instructions for use of dolomite flour

Before you start applying fertilizer, you need to know exactly the soil acidity of the soil, otherwise you can harm the plants, even destroy them. The instruction on how to apply dolomite top dressing per one hundred square meters, depending on acidity, provides for the following dose of lime fertilizer:

for acidic soils with a pH less than 4.5, 500-600 g will be required;
for medium acid soils with a pH of 4.5 to 5.2 - about 450-500 g;
for slightly acidic soil with a pH of 5.2 to 5.7 - 350-450 g.

For stone fruit trees, annually after harvesting, mineral fertilizers from dolomite - 1 kg or 2 kg for each tree. Under the currant bush, 0.5 - 1 kg of the substance is introduced. For vegetable crops, the application is carried out before planting vegetables, and for potatoes, tomatoes - in advance. Under sorrel, gooseberries, blueberries, dolomite is not used.

When to pour

Dolomite fertilizers are applied at any time. Before you start using them, it is better to clarify when to pour dolomite flour in the garden. In the area where it is planned to grow vegetables, flour is scattered in the spring in advance, 2 weeks before planting. In addition to improving the structure of the soil, dolomite sanitizes it and prevents the appearance of plant diseases. Such a sanitary function is relevant in spring, especially for crops. closed ground. In autumn, top dressing is used for processing fruit and berry trees and bushes.

How to deposit

To get the most out of using the product, you need to figure out how to make dolomite flour:

It is impossible to mix the product with superphosphate and ammonia fertilizers, urea.
It is necessary to distribute flour on the area evenly, mix thoroughly with the ground and loosen it by 10-15 cm, near trees and shrubs - along the edge of the circle near the trunk, deepening into the ground.
Dolomite is applied annually to clay soils.
The dose of manure, compost should not be applied together with fertilizer, but after it has been applied, then everything should be dug up.
The simultaneous use of boric acid and copper fertilizers affects the increase in the efficiency of liming dolomite bait.
For flowers, dolomite fertilizer is applied to the hole.

Consumption per 1 m2

Different garden and vegetable crops react to soil acidity in their own way. If you are going to use dolomite fertilizer, find out from the table below which plants and in what quantity need such top dressing:

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