The benefits of mineral fertilizers for seedlings and adult tomatoes. Types and application of dressings

The benefits of mineral fertilizers for seedlings and adult tomatoes. Types and application of dressings

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Tomatoes are very demanding on nutrients and they need fertilization. Top dressing is an important step in the struggle to get a good harvest.

Today, mineral fertilizers are sold in any specialized store. From the article you will learn about the advantages and disadvantages of mineral fertilizers, as well as the use of such simple dressings as: potassium, potassium sulfate, boric acid.

Let's consider what are the complex fertilizing for tomatoes, what are organic fertilizers.

The recommended scheme for applying top dressing for tomatoes is presented.

What it is?

Mineral fertilizers are fertilizers that contain different substances, such as:

  • magnesium;
  • manganese;
  • calcium;
  • sulfur;
  • zinc and others.

But most of all, tomatoes need 3 minerals:

  1. nitrogen;
  2. potassium;
  3. phosphorus.

Mineral complex fertilizers contain basic and additional substances. In simple ones, there is only one main trace element, therefore such compositions are used in a mixture with others or in order to prevent a shortage of a particular substance.

Important! It must be borne in mind that you need to feed only in the bite zone, otherwise the plant will start to rot and will not give a good harvest.

Advantages and disadvantages

The advantages of mineral fertilizers include:

  • high and balanced concentration of nutrients;
  • the possibility of using for any type of soil;
  • using a small amount.

Using such mixtures, you can regulate the size and quality of the crop. The disadvantages are that:

  • the price of mixtures is quite high;
  • an excess leads to the death of plants;
  • they need to be used systematically.


Mineral fertilizers containing nitrogen help plants during their growth and development... They are advised to be applied before flowering begins. They accelerate the growth of shoots and leaves. But we must remember that with an excess, the culture will grow rapidly, tomatoes will acquire unusual shapes, stains will appear on them, and the taste will significantly decrease.

Nitrogen fertilizers include:

  • ammonium nitrate;
  • urea;
  • ammonium sulfate;
  • urea;
  • ammonium sulfate.

Potassium-containing mineral fertilizers have a positive effect on the root system. Thanks to these supplements:

  • green veins do not appear inside the tomatoes;
  • plant immunity increases;
  • the taste of the fruit improves.

Phosphate mineral fertilizers in the form of powder or granular superphosphate help the root system to develop and grow.

Tomatoes need phosphorus during the period:

  • growing seedlings (for details on when and how to feed tomato seedlings, read here, and from this article you will learn how to fertilize tomato seedlings using folk remedies);
  • picks (you can find out about how to fertilize tomatoes before and after picking here);
  • landings.

Simple top dressing for tomatoes and their application

Simple mineral fertilizers are inexpensive... The advantage of nitrogen, potash and phosphorus dressings is that the gardener can regulate the amount of substances himself.


Potash fertilizers are applied to the soil at different stages of tomato cultivation. It is undesirable to use potassium salt and potassium chloride. These fertilizers are bad for the development and taste of tomatoes.

In the fall, you can use potassium chloride so that the chlorine has time to wash out of the soil. Potassium salts are recommendedthat do not contain chlorine: potassium sulfate or potassium sulfate.

Potassium sulphate

The best fertilizer for tomatoes is potassium sulfate - a yellow powder in the form of small crystals that dissolve easily in water. These granules also contain:

  • iron oxide and sulfur;
  • calcium;
  • sodium.

Thanks to these components, the growth and yield of the tomato is increased. Potassium sulfate is recommended for acidic soils... Diluted with water, you can spray directly onto the stems and leaves of tomatoes.

Boric acid

Boric acid can be used to process tomato seeds, spray plants, and apply to holes before planting seedlings in open ground.

When the acid solution is applied directly under the roots of the tomato, the nutrients through them go to the leaves. Spraying the solution directly onto the green parts is more effective.

To prepare a boric acid solution, you need to correctly calculate the ratio of the components: 1 g of the drug per 1 liter. water.

It is necessary to dilute the drug in hot water, and feed it cooled down.

Ready-made complex dressings

The most effective complex fertilizers are:

  • Diammofoska;
  • Ammophos;
  • Nitroammofosk.

Diammofosk contains 26% potassium and phosphorus, 10% nitrogen, various macro- and microelements.

The advantage of this fertilizer is that it dissolves easily.... You can bring it into the ground when digging it. Norm 30-40 g per 1 m2 soil. You can water the roots of the bushes. To do this, 1-2 teaspoons of Diammofoski are dissolved in a bucket of water, this solution is enough for 1 m2.

Ammophos contains slightly more than 10% nitrogen and 50% phosphorus. There is no chlorine in it. This fertilizer has a good effect on the root system of the tomato and promotes the early ripening of the fruit. It can be diluted, then watered with the root system of the bushes, or sprinkled dry, while the distance from the trunk should be more than 10 cm. The advantage of Diammofoska and Ammophos is that there are no nitrates in these compositions.

Nitroammofoska is a granular gray fertilizer containing 16% of the main microelements. This dressing is highly water soluble. Fertilizer increases the yield of tomatoes by 30%, and in some cases - 70%... Application rate - 30-40 gr. 1 m2... It can be applied dry when digging up the earth, or feed them the roots.

Nitroammofosk contains nitrates that can accumulate in tomatoes. If the rate of its introduction is increased, then the taste and benefits of eating such tomatoes are significantly reduced.


Organomineral fertilizers are a mixture of organic matter, for example, an infusion of chicken manure or slurry, and simple minerals. Such top dressing is absorbed quickly by tomatoes. Organomineral fertilizers are environmentally friendly.

They improve the composition of the soil and come in the form of:

  1. dry mixes;
  2. granules;
  3. solutions.

Most often, humates are used for feeding tomatoes - a natural substance in the form of an extract from:

  • silt;
  • manure;
  • peat.

In addition to the basic substance, sodium and potassium humates contain:

  1. complex of minerals;
  2. beneficial bacteria;
  3. humic acid.

Thanks to the components present, the fertility and quality of the soil improves, the roots of tomatoes are warmed up and grow faster. When using humates, the yield increases... This drug is used at different stages of the growing season. In its solution, you can soak seeds, water seedlings and planted plants. Take 1 tbsp for a bucket of water. spoon of humate.

You can feed the seedlings and already grown tomatoes after planting with organomineral feeding of Malyshok. It helps plants to avoid transplanting stress and improves root development.

We talked in detail about the features, pros and cons of such ready-made dressings as Malyshok, Red Giant, Magician Bor and others here.

If you soak tomato seeds in a solution of this fertilizer, then they will rise better and faster.... For preparation, add 100 ml of the drug Malyshok to a bucket of water.

Organomineral fertilizer Senor Tomato has a positive effect on the formation of ovaries, improves the taste of fruits. Plants get a lot of potassium and a limited amount of nitrogen, so they do not fatten, but are fully committed to producing a good harvest. Therefore, this type of preparation is especially effective when used in the second half of cultivation. You need to take 5 tbsp for a bucket of water.

Usage scheme

Mineral fertilizers are recommended to be used according to the following scheme.

After 2-3 leaves appear on tomato seedlings, fertilizing is carried out with complex fertilizer. It can be Baby or Nitroammofosk.

Fertilizer with potassium and phosphorus should be fed to seedlings 7 days before it is planned to plant tomatoes in a greenhouse or in open ground (read about the first and subsequent fertilizing of tomato seedlings here, and from this article you will learn about the best fertilizers for seedlings and greenhouse tomatoes. ). In the soil, they need to be fertilized for the first time 10 days after planting, since plants need to grow leaves, it is best to use nitrogen-containing fertilizers.

Such dressings are carried out once every 10 days.... As soon as flowers and ovaries appear, potash fertilizers must be applied. Tomatoes need such complex feeding until the growing season is over.

Even the most fertile soil without the use of mineral fertilizers will not give a good harvest of tomatoes. The fact is that plants deplete the earth, consuming the substances available in it, therefore they need to be fed regularly. Only properly fertilized bushes will delight the owner with a large number of tasty and healthy tomatoes.

Watch the video: HOW and WHEN you should Fertilize your Vegetable Seedlings (May 2022).