Dolomite flour as a deoxidizing agent. What agricultural crops require dolomite flour? Timing for adding dolomite flour

Dolomite is a rock that is 95% composed of the mineral dolomite. The main features of such rocks were first described by the French geological engineer Dolomier, from whose surname the mineral got its name. At specialized enterprises, large rock stones are ground into flour, dried, and stored packaged in bags and sacks. Gardeners interested in improving the soil use dolomite flour as a fertilizer and a means to reduce soil acidity in their gardens.

Why do you need to reduce soil acidity?

Chemical reactions occurring in the soil can negatively affect the ability of plants to absorb nutrients beneficial for their growth and development. nutrients. As a result of such reactions, free hydrogen ions accumulate in the soil, which block the access of necessary substances to the root system of the plant. Acidity is determined by the amount of hydrogen compounds in the soil (pH). This value can be determined in special laboratories.

Vegetables and fruit crops prefer soils with a neutral or alkaline pH. A pH value of 7.0 is considered neutral, a figure below this value indicates increased acidity of the soil, if it is above this level, then the soil is alkaline.

Attention! Even within one summer cottage this indicator may differ significantly, soil samples for laboratory determination The pH needs to be taken from several small areas.

If it is determined that the soil composition has a pH value below 7.0, it should be neutralized using dolomite flour. The video explains in detail how to do this correctly, in addition, you can see with your own eyes the whole process of adding dolomite flour to the soil.

Apply the substance depending on the acidity of the soil

Useful properties and applications in gardening

Dolomite flour rocks has many beneficial properties that have a beneficial effect on the growth and development of vegetables and fruits, fruit trees and shrubs:

• the use of flour reduces the number of weeds in the beds that grow in acidic soil;
• it stimulates the reproduction of beneficial microorganisms, bacteria and insects living in the soil, which contributes to good growth and development of fruit crops;
• the beneficial effects of other fertilizers become more noticeable due to a decrease in the blocking effect of hydrogen ions;
• has a destructive effect on harmful insects, grinding their tissues and covers like an abrasive material;
• Vegetables and fruits not damaged by pests last longer, marketable condition they are much better;
• the high calcium content in dolomite promotes good survival and development of the plant’s root system, the roots become strong and absorb nutrients well, almost do not get sick, and are not affected by rot;
• adding flour is a process that allows you to grow an environmentally friendly harvest of vegetables, fruits and berries; flour neutralizes the effect of heavy metal salts deposited in the soil;
• Magnesium, which is part of dolomite, forms a sufficient amount of chlorophyll necessary for photosynthesis.

Advice. If it is impossible to determine the acidity of the soil in the laboratory, you can use folk remedies: vinegar or grape juice, because the pH accuracy of small summer cottages not required.

When to Apply Fertilizer

The timing of adding flour is not regulated: in spring, summer or autumn you can use it in garden plots and vegetable gardens:

1. In the spring, usually April-May, flour is scattered onto the beds, then I dig them up and loosen them.
2. From August to November, flour is applied around trees and shrubs in a circle of 2 meters. One trunk will require about 2 kg, a bush - half as much.
3. Even in winter you can fill a certain area, the main thing is that it is level, and melt water, enriched with dolomite flour, were absorbed into the ground, rather than flowing down an inclined plane.
4. In summer, dolomite is used as a top dressing that destroys pests.

Flour should be added only to acidified areas of soil; it is not recommended to do this in neutral and alkaline soils. Such uncontrolled use can negatively affect plant growth and bed productivity due to excess calcium.

Flour can be used in greenhouses, adding only 100 g per 1 square meter. There is no need to dig up the earth after this, since flour delays the evaporation of moisture from the surface of the earth, which is very important for plants planted indoors.

They grow in vegetable gardens and orchards all kinds of plants, they all give preference different composition soil: acidic, neutral or alkaline, so you need to have a specific approach to each crop. If necessary, apply dolomite only to areas where it is required.

The use of dolomite flour helps to increase productivity and excellent plant growth, be patient and use it constantly. In 2-3 years, after the quality of the soil has improved, you will notice this, and you will not regret the labor and time spent; your pets will only delight you with their fertility.

Dolomite flour: video

Most of the crops grown in garden plots are sensitive to soil quality. Receive regularly bountiful harvests This is possible only if the soil is neutral or slightly alkaline. Acidic soil is not suitable for farming, so the acidity is neutralized before planting. Suitable means Dolomite flour is used for this, but there are some nuances in using fertilizer.

What is dolomite flour?

Dolomite flour- This is the mineral dolomite crushed to a powdery state. Since it is found very often in Russia, there are no problems with raw materials. The finished powder has a slight shine, its color varies from white to grayish, sometimes it can even be reddish or beige depending on the starting raw material.

in dolomite high concentration contains calcium and magnesium carbonates, which effectively neutralize soil acidity, which makes it beneficial for Agriculture. The same substances are present in dolomite flour not in pure form, but in the form of salts, which prevents the deposition of trace elements in grown vegetables, berries and fruits in excessive concentrations.

Dolomite flour can be used as fertilizer. In the process of purely mechanical processing, no chemical additives are introduced; the product is used in in kind. Consequently, such fertilizer is completely safe for both the environment and human health.

The finer the grind, the higher the quality of the fertilizer. This is exactly what you need to focus on when purchasing it. The best product for the garden is a product whose granules do not exceed 1 mm in diameter (similar to sea sand).

Please note that dolomite can be unfired or fired. The advantage of the second option is that the plantings will receive more magnesium.

Photo gallery: raw materials and mechanical processing products

Packages of dolomite flour are sold in stores

Mineral after grinding

Mineral in natural form

Useful properties for the garden

Dolomite flour - excellent fertilizer, which helps to obtain a stable harvest regardless of the quality of the soil.

But the benefits of this product are not limited to soil deoxidation. In addition to the fact that due to the increase in the concentration of calcium and magnesium in an easily digestible form, fertility increases and the soil structure improves, the use of fertilizer has other positive effects:

1. The number of weeds in the garden area is reduced.
2. Microorganisms, bacteria and insects that are beneficial to plants living in the soil are stimulated to reproduce.
3. The effect of other fertilizers applied to planting (chemical or natural) becomes more noticeable.
4. The number of pests is sharply reduced. Powder particles act as an abrasive, damaging the chitinous cover of beetles and soft fabrics slugs. By the way, you can not only bury flour in the soil, but also sprinkle it on trunks, branches, stems and leaves. The product is absolutely safe for people and pets.
5. Fruits that receive less damage from pests are much better stored.
6. The plantings take root well, since the roots, in the presence of calcium, grow faster and become stronger. The plant better resists various infections (especially rot) and receives more nutrients from the soil.
7. Ecological purity of grown vegetables, berries and fruits. Dolomite flour has unique property neutralize salts of heavy metals deposited in the soil, even radionuclides.
8. Magnesium, which is part of the fertilizer, is needed for the formation of chlorophyll, without which photosynthesis is impossible.

When to deposit?

Dolomite flour can be added to the soil at any time, since improving the quality and additional remediation of the soil will never be superfluous.

Table: recommendations for adding dolomite flour depending on the time of year

The nuances of applying and using fertilizer

Dolomite flour will be useful to you only if the soil on the site is really acidic. In order not to waste your own time, effort and money, first find out whether you need such fertilizer at all. There are special devices and litmus paper for this. But on garden plot the high measurement accuracy they provide is not needed. You can determine whether the soil is acidic using time-tested folk remedies - vinegar essence and grape juice.

It should be noted right away that with uncontrolled scattering of dolomite flour over the site, high yields should not be expected.

Treatment of the entire area of ​​the site and open ground

If the entire area is cultivated, the procedure should be carried out once every 6-9 years, depending on the level of soil acidity, the amount of mineral fertilizers applied and the intensity of precipitation. Flour is scattered over the area, leveled with a rake, and then the ground is dug up to a depth of at least one shovel bayonet.

Digging is necessary so that the fertilizer begins to act faster. Otherwise, you will have to wait for the rains, which, absorbed into the soil, will deliver useful material by the address. By the way, rains wash away all fertilizers from the soil, including dolomite flour.

Burying dolomite flour into the ground will have a greater effect than fertilizer left on the surface

Be prepared for the fact that the positive effect will not appear immediately. The soil composition will be at its best in 2-3 years. Then the effect of dolomite flour will gradually begin to fade away. Due to energy consumption and high fertilizer consumption, this method of soil deoxidation is used quite rarely.

How to use dolomite flour in greenhouses?

There are no obstacles to the use of dolomite flour in greenhouses, hotbeds and greenhouses. On average, about 100 g are needed per 1 m². But unlike open ground, after spreading fertilizer over the entire area of ​​the beds, they do not dig up the soil. Flour creates a thin film on the soil surface that retains moisture inside, preventing it from evaporating. Thus, upper layer the land does not dry out.

Instructions for use for individual garden beds

Another option is to treat specific beds where you plan to plant crops sensitive to soil acidity, or the root zone of trees and shrubs. Dolomite flour is added to the holes when planting, into the beds when digging, or scattered at the roots (then the soil must be well loosened). But a pressing question arises: how much dolomite flour will be needed?

If the soil in the beds is heavy (peaty, silty, clayey, loamy, aluminous), the corresponding rate is increased by about 15%. Annual application of dolomite flour is recommended.

For light sandy and sandy loam soils in the beds, the norm is reduced by about a third. One procedure with an interval of 3-4 years is enough. In this case, significantly less fertilizer is consumed and the acid-base balance is maintained at the same level due to the regular supply of new portions of the necessary substances.

The amount of dolomite flour directly depends on the type of soil

The introduction of dolomite flour into neutral and alkaline soil is strongly not recommended. You can upset the natural acid-base balance. Excess calcium - much more serious problem than a lack of this microelement.

Table: application rate of dolomite flour depending on the soil

Most summer residents use it to deoxidize the soil and saturate it with calcium. slaked lime. But to avoid negative consequences for plants, it has to be applied in the fall and wait, otherwise the crops will not absorb phosphorus, which means a lack of harvest and sick plants.

There are more good decision– lime dolomite flour for use in gardening. This natural substance, which is extracted from a natural mineral. Its effect on the soil and plants is milder and therefore safer.

Dolomite – a source of calcium and magnesium

To understand the principle of action of the fertilizer, you first need to understand what dolomite flour is, why it is needed in the garden, what beneficial features transmits to the soil.

Lime flour is used to deoxidize the soil so that nutrients found in an acidic environment can enter plant tissue. First of all, it is phosphorus.

If the acidity level exceeds acceptable standards, root system unable to absorb phosphates and develop. Consequently, the plant does not receive most of the minerals through its roots that are necessary for growth and fruiting.

Dolomite flour contains calcium and magnesium oxides. Due to carbonates in the soil, an acid neutralization reaction occurs. Calcium helps strengthen the walls of the tubules through which nutrients flow and the plant actively grows.

The macronutrient also affects taste and nutritional characteristics fruits, promotes uniform ripening.

Fruits that have received carbonates in sufficient quantities withstand storage well. Magnesium plays important role during the formation of chlorophyll. On acidic soils

it is often lacking, which is noticeable by the green veins on the light green leaves. The use of dolomite flour in the garden as a fertilizer solves two problems at once - plant health and large yields.

On light soils - sandstones and sandy loams - magnesium and calcium behave mobilely. Every year, up to 8 g of magnesium is washed out with rain. To maintain redox reactions in light soil, these substances must be added additionally.

On heavy soils, where water movement is difficult, calcium and magnesium are retained, so the deficiency is less felt.

Therefore, how to use dolomite flour in the garden, when to add it to the soil - in autumn or spring - must be decided based on the characteristics of the soil itself. Check it for acidity first.

When carbonates enter very acidic soil, they raise its pH to slightly acidic. If you accidentally add it to neutral soil, the soil will be alkaline - this is not for everyone garden crops I'll like it. For example, even with neutral soil you can’t expect a cucumber harvest, not to mention alkaline soil.

Testing soil for acidity

You can test the soil for acidity in three ways:

• using a pH meter;

• litmus paper;

• the folk way.

Most affordable option- test with vinegar. Acid does not interact with acid, so if you pour vinegar on a handful of soil, it will simply be absorbed. This means that the soil is acidified and measures need to be taken.

If there are carbonates in the soil, a reaction will occur, releasing carbon dioxide, which will be accompanied by hissing. This means that you can wait until the soil is deoxidized with dolomite flour.

How else to deoxidize the soil - analogues of dolomite flour

Nutrients in the form of carbonates are also contained in other fertilizers that are applied to the soil for deoxidation:

• fluff lime;

• wood ash;

• eggshell;

• marl;

• sludge after use in the metallurgical industry;

• cement dust.

It is often not recommended to use chalk as a fertilizer, because it is poorly soluble in water, so it clogs the soil rather than benefits it. After lime, some time must pass before plants can be grown in the garden bed. If you overdo it, the soil will not be suitable for planting for another 2–3 years.

Eggshells and wood ash – natural materials, but you need a lot of them to carry out high-quality processing land. Deoxidizing the soil with ash is a questionable measure, since the calcium content depends on what is burned.

It’s not always possible to find hardwood, and it’s a shame to waste it. Although ash contains a lot of different microelements, it is better to use it for feeding. eggshell you also need a lot, in addition, it takes a long time to dissolve, so you definitely won’t be able to completely reduce the acidity with eggs.

Cement dust has an alkaline reaction and deoxidizes the soil, in addition it contains about 8% potassium. Some summer residents are afraid to use it in their garden beds, because cement production is one of the most harmful, and the consequences for the body can be unpredictable in terms of oncology.

Interesting! The green manure plant phacelia is planted as a deoxidizer. But this method is acceptable when the soil has a slightly acidic reaction. At large quantities acid green manure needs to be sown for several years in a row

Benefits of flour

What remains is dolomite. It is the safest and cheapest - if you compare what is better in price - dolomite flour or lime, then it is definitely the first. And not just for the price.

The use of dolomite flour in the garden does not have any time limits. It is even applied in the snow - dissolving in water, the minerals enter the soil.

The only limitation that dolomite has is that it cannot be applied at the same time as manure.

What fertilizers should you not use dolomite with?

If dolomite flour, the use of which in the fall at the dacha is strictly necessary, is added with manure, then this must be done in different time: first flour, after 2 weeks manure. You can't mix them.

Instructions for using dolomite flour are strictly prohibits the use of this fertilizer with:

• ammonium nitrate;

• ammonium sulfate;

• urea.

These are acidic chemical fertilizers, if mixed with alkaline dolomite, a reaction occurs and hard-to-reach substances are formed that plants cannot absorb. As a result, all fertilizing will be neutralized.

Video: Dolomite flour for a rich harvest

Regarding superphosphate, whether it can be mixed with dolomite, controversy arises. This can and even should be done. Superphosphate mixed with urea, as described above, is solid, but to avoid hardening of the fertilizers, add chalk, lime or dolomite flour to the mixture in a ratio of 20% by weight of phosphates.

How to add dolomite flour to the soil is indicated in the instructions, but just in case there are a few more tips and methods.

Liming time

When to deposit dolomite flour into the soil:

• in spring before planting;

• in the fall after harvest;

• closer to spring in the snow.

In spring, the powder is scattered evenly throughout the garden and dug up on the bayonet of a shovel.

After it dissolves in water, the soil is ready for planting. In the fall, everything happens about the same, but after liming, organic matter is added two weeks later. Since both one fertilizer and the second are used once every three years, you can use dolomite in the first year, and add organic matter in the second.

Adding dolomite flour in the fall helps attract earthworms to the site, which loosen the soil, and also helps get rid of pest beetles. The fact is that dolomite destroys the chitinous cover of insects, causing burns of soft tissues, from which they die.

Before you start using dolomite flour in the garden in the spring, you need to determine the type of soil and calculate how much powder is needed per square meter.

There are standards for applying dolomite flour:

• for highly acidic soil (pH below 4.5) – 600 g per square meter;

• from 4.5 to 5.2 – 450 g;

• from 5.2 to 5.6 – 350 g/sq.m.

Take into account the type of soil - in heavy loams and clayey soils add 15% more powder.

What acidity is needed for different plants?

The following fruits do not bear fruit in acidic soil: beets, cabbage, and alfalfa. A weak acid reaction is needed for cucumbers, onions, legumes, corn, and potatoes. Carrots, radishes and tomatoes are not afraid of acid, but it is better when it is normal.

Important! Blueberries, blackberries and cranberries, as well as gooseberries and sorrel, are afraid of liming. They prefer to grow in acidic soils

Stone fruit trees respond positively to liming and produce good harvests year after year. The greatest effect should be expected in the second year after the soil alkalization procedure.

Feeding methods - mixture recipes

In order to defeat scab and cabbage clubroot, they do next mixture: per 1 kg of dolomite powder add 8 g of boric acid. Then they add according to the norms. This mixture is sometimes added copper sulfate in the amount of half a teaspoon per kilogram.

A liquid fertilizer is made from dolomite lime so that the plants receive magnesium. For this take a bucket of water liter jar powder and dissolve it. The resulting milk is watered at the roots of the plants. The solution is also used in the greenhouse.

Before planting potatoes, you can pre-spray the powder and dig it up during the planting process. It is advisable to reduce the dosage by half with this method.

Video: Adding dolomite flour

When asked which dolomitic lime needed to deoxidize the soil: only finely ground, because this way it dissolves faster in water and enters the root system. To combat pests, such fine dust is dusted on the leaves to kill flies, butterflies and beetles.

Dolomite is mixed with ash to simultaneously feed the plants with microelements and reduce the acidity of the soil. Carry out the procedure better in autumn so that the ash has time to decompose by soil microorganisms. In this case, take 20% less powder than indicated in the dosages for this type of soil. This 20% is compensated by the ash additive.

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Dolomite flour used as magnesium fertilizer(20 g per 1 m2) when digging and for liming acidic soils (from 150 to 300 g per 1 m2). Dolomite flour is used for potatoes, cucumbers and tomatoes when grown in greenhouses.

Dolomite flour It can be natural and obtained by crushing and grinding limestones and dolomites (limestone (dolomitized) flour).

Dolomite natural flour.With a humidity of no more than 12%, it contains 80% (or more) carbonates calculated as CaCO 3 and consists of calcium and magnesium carbonates with various impurities. In terms of granulometric composition, it usually represents a mass of 50-70%< 0,25 мм и не менее 85 % < 5 мм. Это очень ценное известковое удобрение, которое благодаря содержащемуся магнию может быть гораздо эффективнее известняковой муки на lung soils granulometric composition.

Limestone (dolomitized) and dolomite flour. It is obtained by grinding dolomite, which contains 25-32% CaO and 14-21% MgO, and in terms of CaCO 3 - 79.7-110.8%. In Russia (in accordance with GOST 14050-78), limestone flour is produced in two classes and two grades, and for each of them in dusty (humidity up to 1.5%) and low-dusty (4-6% moisture) forms. The varieties differ in their neutralizing ability - grade I is no less than 88%, grade II is no less than 85% CaCO 3, and granulometric composition - the first class has a finer grind than the second. The classes within the varieties differ only in their granulometric composition - the second class is more finely ground than the first, by fraction:< 0,25 мм на 5-10%, < 1 мм на 3-10%. Данные полевых опытов в среднем за пять лет, обобщенные в ВИУА, показали, что наиболее эффективна тонко размолотая (менее 0,25 мм) фракция известняковой муки. Снижение эффективности известняковой муки с изменением гранулометрического состава (увеличением содержания крупных частиц >0.25 mm) increases significantly during the transition from pure limestones to more dolomitized ones, i.e., with an increase in the hardness of the ground rocks.

Shelf-life Unlimited.

What does adding dolomite flour give?

• neutralization of soil acidity;
• enrichment of soil with calcium and magnesium;
• improvement physical and chemical properties soils and their structure;
• increasing the efficiency of organic and mineral fertilizers (the number of available forms is increasing);
• the living conditions of microorganisms beneficial to plants are improved (by reducing acidity);
• radionuclides bind (improves ecological situation);
• negatively affects the chitinous cover of harmful insects.

Efficiency of using dolomite flour

Dolomite flour is especially effective on magnesium-poor sandy and dry soils. sandy soils. When adding full doses of dolomite flour negative action Liming on potatoes and flax is absent or significantly less than when applying full doses of other lime fertilizers. The quality of lime fertilizers is assessed not only by the content of compounds that neutralize soil acidity, it also depends on the fineness (fineness) of grinding. The finer the dolomite flour is ground, the faster and more completely it interacts with the soil and neutralizes acidity faster. The effectiveness of dolomite flour increases with the simultaneous application of boron and copper microfertilizers (boric acid and copper sulfate).

The application of dolomite flour significantly increases the effectiveness of organic and mineral fertilizers. On acidic soils, decomposition accelerates after liming. organic fertilizers, and the latter enhance the positive effect of lime on soil properties. When applying lime and manure together, you can halve the dose of manure, but the effectiveness of mineral fertilizers will not decrease.

The effectiveness of liming is greatly influenced by the uniform distribution of lime fertilizers over the surface of the site and the quality of their mixing with the soil. When applying full and half doses, the method of incorporation of dolomite flour should ensure mixing of fertilizers at the depth of soil cultivation.

Timing and methods of adding dolomite flour

Dolomite flour is added as in open ground, and in greenhouses and greenhouses. The frequency of application is once every 3-4 years.

All lime fertilizers have a long-lasting effect. The greatest effect of liming appears 2-3 years after application, then the acidity of the soil begins to increase and the need for repeated liming arises. Accelerates the process of soil acidification by applying high doses physiologically acid fertilizers(ammonium nitrate, etc.). Accordingly, the more often such fertilizers are used, the more often it is necessary to apply dolomite flour. But this should be done only after a preliminary analysis of soil acidity. The relationship of crops to soil acidity should also be taken into account, since some crops require more acidic soils, some less. Dolomite flour should be used especially carefully under houseplants, since the introduction of high doses without proper control is common mistake lovers.

• Acidic soils (pH< 4,5) - 500-600 г/м 2
• Medium acid (pH 4.5-5.2) - 450-500 g/m2
• Slightly acidic (pH 5.2-5.6) - 350-450 g/m2

For potatoes and tomatoes, dolomite flour is added in the fall when digging the site. For vegetable crops, especially cabbage, dolomite flour is applied before planting.

For stone fruits annual application of 1-2 kg per tree area is required trunk circle after harvest. For black currants, apply 0.5-1 kg per bush once every 2 years. Dolomite flour is not used for gooseberries, cranberries, blueberries, and sorrel.

Dolomite flour and lime cannot be mixed with ammonium nitrate, ammonium sulfate, urea, simple superphosphate, granulated superphosphate, double superphosphate, manure.

Literature

1. Yagodin B.A. and others. Agrochemistry/Under. ed. B.A. Yagodina. - M.: Kolos, 2002 - 584 p., ill. (Textbook)

What is dolomite flour?

To begin with, let us explain that dolomite is a mineral from the class of carbonates that has a crystalline structure. He has glass glitter, and the color can be very diverse - grayish, white, slightly reddish and even brownish. Dolomite flour is obtained by grinding minerals to a powder state and further drying. All this is done under production conditions. 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 plants stop developing and growing, brown spotting and chlorosis appear. The price of this fertilizer is relatively low, and there are a lot of useful properties, which contributed to its popularity among gardeners.

The benefits of dolomite flour.

Dolomite flour can be applied not only to open ground in beds, but also to greenhouses and hotbeds. And flower growers widely use it. Its use has a particularly good effect on sandy loam and sandy soils, poor in such an element as magnesium. What can you expect if you periodically add it to the ground?

1. Biological, physico-chemical and physical properties soil. Increased soil acidity is neutralized.
2. There is a significant increase in the amount of good available to plants forms of phosphorus, potassium, nitrogen, molybdenum.
3. There has been an increase in the efficiency of fertilizers applied by summer residents, especially manure.
4. The soil is enriched with calcium, and the root system of plants is improved.
5. The soil is saturated with magnesium, which is integral component chlorophyll, actively involved in photosynthesis.
6. Plants eat better, change in better side conditions of their detention.
7. The harvest becomes of higher quality, more environmentally friendly (radionuclides are neutralized), and is preserved better and longer in winter.
8. Can be used as a means of combating insect pests, because well-ground dolomite destroys the chitinous covers of insects dangerous to plants.

How to use it correctly?

The amount of dolomite flour that needs to be added to the bed depends on the acidity of the soil in a given place and the mechanical composition of the soil mass. MirSovetov will name only average standards:
. acidic soils (environment reaction less than 4.5) - from 500 to 600 grams are applied per square meter of area;
. medium acidic (medium reaction ranging from 4.5 to 5.2) - per square meter is from 450 to 500 grams;
. slightly acidic (medium reaction from 5.2 to 5.6) - from 350 to 450 grams per square meter.
If the soil is clayey or 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 levels by purchasing special instruments or tests at a garden store or center.
The efficiency of use increases if copper sulfate and boric acid are added simultaneously.

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:

1. 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 dolomite flour.

2. Sensitive to living in an environment with high acidity - cucumber, lettuce, beans, onions, peas, corn, wheat, soybeans. They prefer soil whose environmental reaction is close to neutral; they respond quite well to the use of dolomite flour.

3. Weakly sensitive to increased soil acidity - tomatoes, carrots, radishes, oats, buckwheat. They grow quite normally no matter how the environment reacts. soil mixture, But top scores show on slightly acidic soils. If the soil has strong or moderate acidification, then dolomite flour can be added to the soil in full dosage. Then the plants will be better fed with nitrogen and ash compounds.

4. Requiring liming of only strongly acidic and moderately acidic soils. For example, flax likes to grow in slightly acidic soils. A slight acidity will not affect the yield of potatoes planted in this area.

Features of application.

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 liming, distribute dolomite flour evenly over the entire surface of the soil to a depth of 15 cm, mixing thoroughly. If you simply sprinkle dolomite on the surface, there will be an effect, but you will notice it no earlier than after 12 months.
You can add dolomite and manure to the soil at the same time, but you cannot mix them together. First, dolomite flour is spread, then manure is spread, the third stage is digging.

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

For cherries and plums, add one or two kilograms of dolomite flour every year after harvesting.

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.

Apply dolomite under cabbage and turnips when planting.
In spring, you can water plants, for example, beets, clematis, with dolomite “milk” - water to which dolomite flour has been added.
Do not apply this fertilizer to sorrel and gooseberries.
Dolomite flour is added to the flowers before planting - in a pot or hole, being sure to mix well with the other components of the soil mixture. Hyacinths, orchids, and violets respond positively to the addition of dolomite flour.

Dolomite flour should not be mixed with urea, superphosphate, ammonium sulfate, or ammonium nitrate.

If it turns out that the soil on your site has a neutral reaction, then there is no need to do liming.

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

Dolomite does not burn plant leaves and can be scattered 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 add lime once every few years, but it is better to do it a little each year.

For stone fruit trees(cherry, plum, apricot) requires an annual application of 1 - 2 kg. per tree along the area of ​​the trunk circle after harvesting.

For black currants, add 0.5 - 1 kg. under the bush once every 2 years.
For vegetable crops, especially cabbage, dolomite flour is applied before planting.

For potatoes and tomatoes, dolomite flour is added in advance.

Dolomite flour is not used for gooseberries, cranberries, blueberries, and sorrel.

Dolomite flour, as well as lime, cannot be mixed with ammonium nitrate, ammonium sulfate, urea, simple superphosphate, granulated superphosphate, double superphosphate, manure.

The returns from liming depend on the degree of acidity of the soil, the characteristics of the cultivated crops, the rate and type of lime fertilizers. The higher the acidity of the soil and the higher the rate of lime, the greater the effect of liming. Since lime fertilizers slowly interact with the soil, the greatest effect of liming appears in the second or third year after application.
Liming significantly increases the efficiency of organic and mineral fertilizers. On acidic soils, after liming, the decomposition of organic fertilizers accelerates, and the latter enhance the positive effect of lime on the properties of the soil. When applying lime and manure together, you can halve the dose of manure, but the effectiveness of mineral fertilizers will not decrease. Liming is especially beneficial when adding physiologically acidic ammonia and potash fertilizers, capable of acidifying soils, as well as for crops that react negatively to increased acidity.

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

Liming using the Mittlaider method.

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