General information

9 useful properties of dolomite flour, which you did not even guess


Every experienced gardener, gardener, florist knows that the future harvest depends largely on how correctly the plot has been selected and prepared. And among the priority agricultural practices for soil improvement is the normalization of soil acidity. It is possible to determine its acidity in various ways, even without resorting to the services of laboratories, and the technique of liming the soil is also known to all. Dolomite flour is one of the best and most popular materials, which not only leads the land on the site to a normal acidity value, but also enriches it with the necessary trace elements.

What is dolomite flour

Dolomite is a carbonate mineral. This mineral is purified and ground to a powdery state, thus obtaining dolomite flour. I must say that it is not necessarily she will be white. In nature, you can find dolomite of various colors: white, light gray, pink, brown.

Properties of dolomite flour

First of all, it is an excellent tool to reduce the acidity of the soil. But beyond that, dolomite flour and excellent fertilizer, containing the minerals necessary for plants. Therefore, it is often used precisely as a fertilizer for growing garden and horticultural crops. Dolomite flour is used not only for outdoor plants. It is successfully used in greenhouses, greenhouses and indoor floriculture. It should be noted that, against the background of many similar products, dolomite flour has a rather low cost and an unlimited shelf life.

Use of dolomite flour

In order for the use of dolomite flour in liming the soil to have the greatest effect, it is necessary to determine the acidity of the soil in the area. Dolomite is introduced not often. Enough once every three to four years. The amount depends on the degree of acidification of the soil. The norms for introducing dolomite flour into open ground are as follows:

At pH less than 4.5 (high acidity) - 500-550 grams. per square meter of land.

At pH from 4.5 to 5.2 (medium acidity) - 450-500 gr. per square meter of land.

At pH from 5.2 to 5.6 (low acidity) - 350-450 grams. per square meter of land.

At higher pH values, when the ground is normal, and dolomite flour is used as fertilizer, the rate of its introduction is significantly reduced. If the land is alkaline, then it is better to refrain from using dolomite.

I want to note that in addition to all of the above, fine-ground dolomite flour is also used to combat garden pests.

Adding an article to a new collection

Dolomite flour (or just dolomite) is popular among summer residents due to its low cost and natural composition. Take note of these unexpected ways to use dolomite flour in the garden and the garden!

Dolomite flour is an environmentally friendly fertilizer for the soil. It is consumed in small doses and is inexpensive, so it helps to improve the soil even on a large plot without much cost. And all this is possible thanks to the beneficial properties of dolomite flour.

Flour is mined by crushing the dolomite mineral. The result is a carbonate powder of white, gray, and sometimes reddish-brown color.

1. Dolomite flour heals the soil

Dolomite flour suppresses soil infections: cabbage keel, scab. It activates the activity of beneficial microorganisms and annelids, which help to heal the soil.

According to the Metlider method, 7–8 g of boric acid (per 1 kg of dolomite) is added to this fertilizer. The mixture is scattered on the surface of the soil, then buried to a depth of 10-15 cm. On heavy soils 200 g of this fertilizer is used per linear meter of bed 40–45 cm wide, and on light ones 100 g each.

Dolomite flour is applied annually to heavy clay soil, and on lighter soils it is sufficient to use it once in 2-4 years.

2. Dolomite flour reduces soil acidity

If buttercups, horsetails, green mosses, sorrel are actively growing on your site, it means that the soil in this area is acidic. And most garden crops like neutral, slightly acid and slightly alkaline soil. Therefore, before planting garden and garden plants in the soil you need to add dolomite flour to reduce the acidity level.

The acidity of the soil at the site can be measured with litmus paper. But if it is not at hand, take a handful of soil from the garden, evenly distribute it on a flat surface (the soil layer should be about 5 mm) and pour a little vinegar on top. The appearance of foam indicates that your site is neutral or alkaline soil. If the vinegar is simply absorbed like water, then the soil is acidic.

Indicator of normal acidity - pH 5.5-7. At pH below 4.5, the soil is acidic. In this case, 500-600 g of dolomite should be added to the soil per 1 sq. M. The pH level in the range of 4.5-5.2 is indicative of moderately acidic soil - 450-500 g of dolomite flour is enough to be applied. And in the slightly acidic soil (pH 5.2-5.6) you need to add 350-450 g.

3. Dolomite flour enriches the earth and nourishes the plants

Dolomite flour is also used on neutral soils, as it favorably affects the development of plants, strengthens their immunity and increases yield. Dolomit helps maintain the required level of hydrogen and calcium ions in the soil, as well as replenishes the nutrients that are consumed with the constant cultivation of various crops.

For dressings it is best to use fine flour. It is recommended to add 7-8 g of boric acid (per 1 sq. M of soil) and 0.5 tsp. copper sulfate, mix thoroughly and close up in the soil.

Also, dolomite flour can be mixed with water in a ratio of 1:10 and water the resulting "milk" plants in open ground, greenhouse or at home on the windowsill. This dressing is especially effective for soil deficient in magnesium. Beetroot, cabbage of all kinds, potatoes, turnips respond best to it. But for plants that prefer high acidity (sorrel, blueberries, cranberries, lingonberries), dolomite flour is not suitable.

4. Dolomite flour increases fertilizer efficiency

On acidic soils, phosphorus is poorly absorbed by plants. Therefore, thanks to dolomite flour, which deoxidizes the soil, phosphate fertilizers are better “digested” by garden and garden crops.

But note: dolomite cannot be applied with ammonium sulphate, ammonium nitrate, urea, superphosphate, manure and compost, as this combination of fertilizers can cause a chemical reaction that will lead to the loss of the beneficial properties of the diet. Therefore, it is recommended to first apply flour at the site, and some time later - mineral fertilizers.

5. Dolomite flour increases yield

Dolomite flour contributes to the proper development of the fruit, their early formation. Sheet crops also increase the green mass faster.

The fact is that flour consists mainly of calcium and magnesium, which contributes to the rapid growth of roots, stems, leaves and fruit ripening. This improves the quality of vegetables. For example, in potatoes the protein content increases. In addition, dolomite flour binds radionuclides in the soil, so harmful impurities do not penetrate into the fruit.

6. Dolomite flour adorns the garden and vegetable garden

With the regular use of dolomite flour in a vegetable garden and in the garden, the flowering of cucumbers, squash, squash, chives, fruit trees is prolonged. Therefore, your site will not only bring a good harvest, but also please the eye with its decorative effect.

Plants become strong and bright green, because magnesium, which is part of dolomite, contributes to the proper course of the process of photosynthesis.

7. Dolomite flour destroys insects with chitinous cover

Fine-grinding flour destroys the chitin shells of garden and garden pests (for example, the wireworm - the larvae of the click beetle). In autumn, when digging, the flour is buried in the soil, and in the summer it pollinates the leaves and stems of the plants. Thanks to this safe for humans means mites, beetles, flies, butterflies.

8. Dolomite flour acts non-aggressively.

Slaked lime can also be used to deoxidize the soil, but it does not always have a positive effect on plants, since it is very aggressive. After the application of lime, horticultural crops slowly assimilate phosphorus; therefore, it is better to apply it to the soil only in the autumn after the harvest. But dolomite flour can be embedded in the soil throughout the year (even in winter): it does not burn the roots and leaves of plants.

In winter, the dolomite is scattered on the surface of the snow, and when it melts, it is perfectly absorbed into the soil, reduces its acidity and fertilizes.

9. Dolomite saves your finances

Soil acidity can be reduced with wood ash. But it has to pour quite generously. To achieve the desired effect on equal areas, it is necessary to apply 2 times more ash and lime than dolomite flour. And if you consider that the latter is cheaper than the previous two, then its use considerably saves your money.

Do you use dolomite flour on your plot or do you prefer other ways to reduce soil acidity?

Dolomitic (limestone) flour: general characteristics

Many novice breeders are concerned about the question of what dolomite flour is and when it should be added to achieve maximum results. Dolomite flour has been used in gardening and plant growing for a very long time. It is a coarse grinding substance obtained as a result of crushing and grinding of carbonate minerals, most of which are dolomites. Dolomite flour has a simple composition, the chemical formula of dolomite is CaMg (CO2). Its main active ingredient is calcium.

The main reason for soil acidification is the displacement of calcium from the soil by hydrogen ions. To improve the quality of the soil and stabilize the pH, the balance of hydrogen and calcium ions is recommended to be maintained artificially using dolomite flour or other means.

Dolomite flour: how to apply lime fertilizer

To get the maximum result from dolomite flour, you need to know how to apply it correctly. Before using dolomite flour in spring or autumn, you must first measure the acidity of the soil, as the amount of fertilizer depends on this parameter.

Dolomite flour is actually safe, but in order to achieve maximum results from the application, you should carefully read the instructions for its use.

Introduction of dolomite flour is best done in the fall, but in case of emergency it can also be used in spring and summer.

Dolomite flour is an absolutely safe substance for humans, birds and animals, and therefore even if it is scattered over a pasture, it will not cause any harm to the health of the herd.

Terms of making dolomite flour

Limestone flour is used every three or four years, the multiplicity of application depends on the pH of the soil. For example, to improve the characteristics of heavy clay soils, dolomite flour should be applied annually.

If dolomite flour is used to improve the quality of the soil near the trees, 1 to 2 kilograms of the product is harvested every two years after each harvest. If you are top dressing bushes, then lime powder will need to pour under each plant from 0.5 to 1 kilogram.

In the spring it is recommended to water with a weak solution of dolomite flour such plants as clematis and beets.

How to use dolomite flour: consumption rates

Dolomite flour can be used at any time of the year, it is safe, and besides, it does not interfere with the absorption of other nutrients by plants. However, most often the introduction of funds is carried out in the spring a few weeks before the beginning of the planting of plants in the ground. When using dolomite flour, it is not recommended to apply it simultaneously with other fertilizers, as it does not interact organically with all of their types.

And now let's consider how to properly deoxidize the soil with dolomite flour:

Other soil deoxidizers: how else can you lick the soil

After harvesting, gardeners put a lot of effort to get good results the next year. Perennial plants require special attention, which delight the plant growers with their fruits for years. A good fertile site with an optimum pH level is a rarity, and therefore timely fertilization and acidification are the key to getting excellent yields every year.

Push Lime

Pushon lime is a white powder easily dissolving in water. When mixed with water, the breeder gets hydrated lime. This substance is very often used in the production of lime fertilizers and is one of the important components in the manufacture of bleach.

Lime-pushonka is used in cases when it is necessary to get rid of garden and garden diseases and pests. And now let's consider what is better - dolomite flour or lime.

Lime-pushonka for soil deoxidation will require virtually the same amount as dolomite flour. But the main disadvantage of the lime-fluff is that it can only be used once every 6 or 8 years, as it provokes the occurrence of specific processes in the ground, which can negatively affect its quality. And besides, lime does not have such a positive effect on the soil as dolomite flour.

Wood ash

Many plant growers use wood ash not only as an excellent fertilizer, but also as an excellent soil deoxidizer. It loosens the soil and improves its moisture and breathability. The use of wood ash is advisable on all types of acidic soil:

  • sod-podzolic,
  • podzol,
  • brown forest,
  • light gray forest,
  • marsh-podzolic,
  • peat bog.
The amount of wood ash that needs to be added depends on the acidity level of the soil. On average, it ranges from 0.7 to 1.5 kilograms per 1 m². Ash is recommended to bring into the soil during the spring digging. Sometimes plant growers practice the introduction of ash into the wells or planting pits, but this should be done very carefully so as not to burn the roots of the plant.

The main drawback of ash is that it will have to be added every year, unlike dolomite flour and lime-fluff. But on the other hand, it contains a much larger amount of nutrients, which allows it to be used as an effective fertilizer.

The advantages of using dolomite flour in the garden

Plant growers note that dolomite flour is an excellent fertilizer, significantly increasing the yield of horticultural crops.

The use of dolomite flour contributes to the reduction of weeds on the site, reduces the likelihood of epidemics of pests and fungal infections. In addition, it is a natural remedy that does not contribute to the accumulation of herbicides and pesticides in plants, which allows for an environmentally friendly crop. Dolomite flour as a fertilizer should be used in the garden in the spring, it increases the plant's own immunity, which allows them to successfully withstand most plant infections and subsequently improves their winter hardiness.

Dolomite flour is an effective and absolutely safe remedy that costs a penny, but brings benefits to a million.

What is needed

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

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 (plums, cherries). A good result is achieved when making flour throughout the site, and in the beds in greenhouses and greenhouses on sandy soils and with low magnesium levels. At neutral soil acidity, dolomite fertilizer is not recommended, as the natural soil balance is disturbed.

As a result of the chemical properties of the dolomite:

  • improves the biological properties of the soil,
  • the content of beneficial trace elements, macronutrients, minerals,
  • the effect of other fertilizers increases,
  • yield increases
  • product quality is improving,
  • radionuclides are displayed.

Dolomite flour or lime, which is better

For soil deoxidation, lime fertilizers are often used, which are considered stronger to normalize the level of soil acidity due to the form of calcium - hydroxide, which increases the possibility of neutralization. Однако известняковая мука имеет свои недостатки. Сразу после ее внесения необходимые вещества фосфор и азот не усваиваются, поэтому земле нужен перерыв для посадки. Известковая мука вносится в межсезонье, чтобы был обеспечен хороший временной промежуток до высаживания растений. Доломитом же, содержащим еще и магний, можно удобрять почву в любое время.

Сорные растения

Weeds, as well as cultivated plants, will not grow on the soil, which is not suitable for their acidity. Therefore, they are a kind of indicator that indicates the pH-factor of the soil mixture at the site. For example, dandelions, wheat grass, chamomile, clover and coltsfoot grow on slightly acidic soils. On sour - wood lice, plantain, buttercup, and on neutral ones - quinoa and nettle.

The use of this table sauce is one of the easiest and quickest ways to establish the rate of dolomite flour. It is used this way - a handful of soil is watered with a few drops of vinegar and looking at the reaction. If the earth begins to swell and bubble, then its pH reaction is neutral or acidic.

Special devices

From a sufficiently large number of specialized devices, which are produced by both foreign and domestic manufacturers, we can recommend the following models of digital and analog portable pH meters for private use. These are non-volatile EPA-102 and EPA-103, produced in Brazil, and HI-9025 and HI-9024, digital portable devices made in Germany, which provide high accuracy of measurements. You can also use simple litmus paper.

Dolomite or lime - what to choose?

For the deoxidation of the soil, except for dolomite flour, hydrated lime (Ca (OH)), which is popularly referred to as “fluff”, is very often used. It is more common for sale, and is cheaper than dolomite powder. But is it superior to consumer properties?

Limestone flour is considered the most powerful tool for the normalization of soil acidity. Calcium is included in its composition in the form of hydroxide (as opposed to dolomite, which contains Ca in the form of carbonate), which enhances its effect on soil acidity, increasing its ability to neutralize one and a half times.

Lime “works” faster and more actively, but this property also has negative sides. For example, for the first time after application, it prevents the absorption of the most essential substances for plants, such as phosphorus and nitrogen. Therefore, immediately after its introduction it is impossible to plant anything, the earth should “rest”. Therefore, lime powder is usually brought in the off-season, when the beds are prepared before winter, or in early spring, in order to ensure a good interval before planting and seedlings.

In contrast to lime, dolomite can be added at any time, as soon as the need arises. Therefore, it has become one of the most popular fertilizers, normalizing the acidic environment of the soil.

When to make?

As mentioned above, dolomite fertilizers can be used at any time of the year, since they do not have a negative impact on the absorption of other nutrients from the soil composition. But, they are usually applied before using other fertilizers, as dolomite flour may not organically interact with all of them.

At the site intended for the cultivation of vegetables, it is scattered in the spring in advance, a couple of weeks before planting. It not only fertilizes and improves the structure of the soil, but also sanitizes it. This is very important for various crops, including potato, which is often affected by various diseases, whose occurrence and distribution of dolomite is able to prevent. It is also particularly important for potatoes that this mineral destroys insects, dissolving their chitin shells in the joints. It helps to fight with the bear, Colorado potato beetle and other pests of potatoes.

Dolomite flour, the use of which has a sanitizing effect on the soil, is particularly relevant in the spring, as a mineral fertilizer for greenhouse plants. When tilling the soil with this mineral in the greenhouse, various fungal diseases do not spread, which has a positive effect on the harvest, and on the subsequent preservation of the fruits and berries obtained.

In the fall, this mineral dressing is used to process and feed fruit trees and shrubs. In this case, the following rates for soil application are recommended - under the tree - about 2 kg, along the rim of the trunk circle, buried in the ground, for shrubs (depending on size) - 0.5-1 kg in the same way.

Liming is a term that is often used to describe soil fertilization in rocks containing calcium. This is not always true, since different substances have different effects on plants. Therefore, before embarking on soil improvement by normalizing its pH –factor, it is necessary to carefully study the instructions for using fertilizer intended for this purpose, since an excess of Ca and all its compounds is much more harmful than its deficiency.

Main characteristics

Flour is made from common white rock - dolomite. Its chemical formula is as follows: CaMg (CO3) 2. Dolomite flour has much milder effect on the soil. This explains its popularity among summer residents. In addition, dolomite does not burn the leaves of plants, and therefore can be used for fertilizer, for example, the same lawns.

This fertilizer is produced according to GOST 14050-93. Mass fraction of moisture in flour meets all requirements should not exceed 1.5%.

The acidity of the soil increases due to the displacement of calcium by hydrogen ions. The addition of dolomite flour compensates for the lack of this element. As a result, the soil gets a neutral reaction.

To increase the effectiveness of this fertilizer, it is often used simultaneously with boric acid and copper sulfate. The best option is finely ground dolomite flour. This fertilizer interacts better with the soil.

A very interesting property of flour is that it binds radionuclides, which makes it possible to produce much more environmentally friendly vegetables and fruits.

Dolomite flour: what is it, what is it for?

Fertilizer dolomite flour is obtained by grinding rock dolomite, which belongs to the group of limestone. In its composition the main component is calcium. It is this chemical element that is expelled from the soil under the influence of hydrogen ions. As a result, a situation arises when the acidity of the soil increases, while its physical and chemical properties decrease.

Among all the fertilizers that are offered in stores for gardeners, dolomite flour is one of the most affordable, while has high efficiency. If the acidic soil prevails on your site, then you can easily level the acidity with this additive, and after that, using this fertilizer, it is easy to adjust the balance of hydrogen and calcium. The best effect can be achieved if you use other fertilizers along with dolomite flour.

The dolomite flour contains elements such as calcium and magnesium. Thanks to them, limestone flour introduced into the soil has a positive effect on the soil composition, as well as affects aciditywhich returns to normal values.

In most cases, gardeners acquire limestone mineral composition in order to deoxidize the soil. This is the main property that is inherent in this supplement. When applying fertilizer acidity reaches such values ​​that allow for good conditions for the growth of plants. Note that this supplement has other positive properties. Among the important ones are the following:

  • the use of dolomite composition leads to the improvement of the soil structure,
  • fertilizing the garden with this mineral supplement, microorganism colonies arise in the soil, which have a healing effect on it,
  • with the periodic introduction of dolomite flour into the soil, the upper layer is saturated, in which a high concentration of nitrogen, phosphorus and potassium occurs,
  • in the soil increases the content of calcium and magnesium,
  • plants are better purified from radionuclides.

When should you use

Dolomite flour, the use of which allows to increase the yield of garden crops, however, is not applied to any soil. Before using the soil, of course, you need to check for acidity. This can be done with, for example, litmus paper. The index of normal acidity for garden or garden land is 5.5-7.5 pH. pH less than 4.5 is acidic soil, 4.5-5.2 - medium acid, 5.2-5.6 - slightly acid. If the soil in the area is neutral or alkaline, make flour, of course, not necessary.

A simple way to determine soil acidity

Instead of litmus paper to determine the pH of the soil, you can use the usual acetic essence. The verification procedure in this case is as follows:

  • A small handful of garden soil is gathered, placed on a flat surface and evenly distributed with a layer of about half a centimeter.
  • Some acetic acid is poured over it.

If after this a violent reaction with foam is noticed, then the soil is neutral or alkaline. Vinegar is simply absorbed into the acidic soil.

Instead of vinegar, you can use grape juice. He is poured into a glass and poured there a little bit of earth. If foam appears on top, and the juice itself changes color, then the soil is neutral or slightly acidic.

Next, let's see how to use dolomite flour correctly. Of course, first of all, you should decide on the dosage of fertilizer.

For soils with an acidity of less than 4.5, usually 500-600 grams of flour are applied per 1 m 2, with a pH from 4.5 to 5.2 - 450-500 g, with a pH of 5.2-5.6 - 350-450 g. On light soils, the dose can be reduced by about 1.5 times. On very heavy soils, the amount of fertilizer applied, on the contrary, increases (by 10-15%).

Dolomite flour: when to deposit

Usually the acidic soil on the site requires liming once every 7-8 years. The greatest effect from the use of this fertilizer is observed for 2-3 years after the introduction of flour. Then the acidity of the soil begins to slowly rise again. In particular, this process is fast if the site owner constantly uses mineral fertilizers. The more such dressings are applied, the faster the soil is acidified.

The effect of the introduction of such fertilizer as dolomite flour, 7-8 years, remains only if the site has been treated over the entire area. However, in this way, the soil in gardens and gardens is rather rarely deoxidized. Despite the low cost of flour, this method can be quite expensive.

Most often, the owners of gardens and orchards make this fertilizer directly under the fruit trees and shrubs, as well as in the beds. In this case, the frequency of use of flour will be somewhat different. So, for stone trees usually use 1-2 kg of fertilizer annually. Under the black currant pour 1.5 kg once every two years.

Under vegetable crops dolomite flour is applied directly before planting in small quantities. Under potatoes and tomatoes, it is worth pouring it in early spring or even in autumn. Sometimes they just throw flour in the snow. In this case, in the spring, when it melts, it is well absorbed into the ground.

Do not use dolomite flour when growing sorrel, gooseberry, blueberry and cranberry.

Ways to make

Thus, dolomite flour, the use of which is advisable on all types of acidic soil, can be used at any time of the year: in summer, autumn, spring and even in winter. This fertilizer is applied to both open and closed ground. Of course, the liming procedure with dolomite flour should be carried out correctly. The bedding is usually produced by the method:

  • Mitlider
  • Makuni

Method B. M. Makuni

It is also a good way to add fertilizer such as dolomite flour to the ground. The instructions for use developed by Makuni, however, are more suitable for preparing soil mixtures for indoor flowers. In this case, the composition will be as follows:

  • dolomite flour - 1 tbsp. l.,
  • superphosphate - 1 tbsp. l.,
  • crushed charcoal - 0.5 l,
  • “Saintpaulia” ground is half a pack.

Previously, one piece of garden soil and sphagnum moss is poured into the bucket. Then add 2 parts of top peat and 0.5 parts of river sand. Pour the dolomite mixture on top and mix everything thoroughly.

Use of dolomite flour against insects

Most often, this powder is used to rid garden plants and horticultural crops from pests that have chitinous cover. Especially effective dolomite flour acts on the wireworm.

For pest control take finely ground flour. To get rid of insects that damage aboveground parts of garden crops, dolomite powder is scattered on the leaves and stalks. Wireworm is destroyed by burying flour into the ground. In the latter case, the powder is best made in the fall.

Dolomite flour is not used against common insects without chitinous cover. In this case, it will be useless, since it is absolutely non-toxic.

Thus, this remedy on acidic soils is quite effective and, moreover, inexpensive - dolomite flour. Instructions for using it too many steps in itself does not include. Usually gardeners mix flour with boric acid, or even just bring it into the ground in its purest form. The main thing is to observe the frequency of dressing and dosage. In this case, the use of dolomite flour will bring the best result.