Try to apply fertilizers at sunset or early in the morning while the sun is not yet active. Means under the influence of bright light can burn the leaves of plants.
To avoid burns of the root system, pour top dressing into moist soil. First moisten the soil with ordinary water, and then with a nutrient solution.
Pour fertilizers strictly under the root, trying not to get on the leaves and stems. This will help prevent not only burns, but also rotting, as well as the appearance of fungal diseases.
If you do not want to prepare nutrient mixtures yourself, use ready-made complex fertilizers for tomatoes, eggplants and peppers. Mineral, organic or organomineral compounds can be found in shops and garden centers. The consumption rates and the method of application are indicated on the package.
You can feed tomatoes only with mineral or only organic fertilizers, or alternate them at different stages. The main thing is to choose only one solution during the next procedure and not mix different ones, so as not to destroy the plants.
Clearly follow the dosage of fertilizers. It's better to do less concentration — it's not so scary. But due to excessive nutrition, tomatoes can develop imperfectly or die altogether.

When to feed tomatoes in a greenhouse and outdoors

During the season, you will need three top dressing.

The first one is carried out about two weeks after planting of seedlings on a permanent place.

The next time fertilizers are applied, when the bushes began to bloom actively.

Then the plants are fed at the fruiting stage, when a lot of green tomatoes have already started on the plant.

At the same time, do not delay with the final top dressing. Any such procedures should be stopped about 2 weeks before harvesting the main part of the crop.

How and how to feed tomatoes two weeks after planting in a greenhouse or open ground

Plants have suffered stress from adaptation and need complex nutrition, which will contain the main macronutrients: nitrogen, phosphorus and potassium.

Mineral fertilizers

Prepare any of the nutrient solutions and pour tomatoes under the root. One plant will need 0.5–0.7 liters of the mixture.

In 10 liters of water, dissolve 1 tablespoon of nitrophosky.

Organic fertilizers

Due to the high nitrogen content, natural fertilizers will help the bushes to quickly start growing and acquire a powerful green mass. Make one of the solutions and pour tomatoes under the root at the rate of 0.5 liters per plant.

In 10 liters of water, dilute 0.5 liters of liquid mullein, which can be found ready-made in shops and garden centers. Pour 250 ml of warm water over 10 g of dry yeast and 2 tablespoons of sugar, mix thoroughly and leave the mixture in a warm place for 2 hours. Then dilute the infusion with 10 liters of water and use.

How and what to feed tomatoes at the beginning of flowering

At this stage, plants are especially in need of potassium, which is responsible for the lush flowering and tying of fruits .

Mineral fertilizers

Choose any of the compositions and pour 0.5–1 liters of nutrient solution under each bush.

In 10 liters of water, dissolve 15 g of potassium monophosphate.
In 10 liters of water, dilute 10 g of kalimagnesia.

Organic fertilizers

At this stage, it is better not to use infusions from cow manure or bird droppings in their pure form. The high concentration of nitrogen in the composition of such fertilizers will stimulate the active growth of bushes. As a result, they will spend their energy on increasing the green mass , and not on tying the fruits. Therefore, prepare any of the mixtures with a high content of potassium, phosphorus and other useful substances.

Pour 200 g of wood ash into 2 liters of hot water. Mix thoroughly and let it brew at room temperature for two days. Then strain the solution through gauze and dilute it with 8 liters of water. Spray the tomato leaves with the resulting product in the evening or early in the morning.

How and what to feed tomatoes in the fruiting stage

Treat the plants with mixtures with a high content of potassium and phosphorus, so that the fruits turn out juicy and fleshy.

Mineral fertilizers

Choose one of the solutions and pour about 1 liter of the mixture under each bush.

In 10 liters of water, carefully dilute 1 tablespoon of superphosphate. In 10 liters of water, dissolve 1 tablespoon of potassium sulfate.

Organic fertilizers

You can use the same solution of potassium humate that was done with the second top dressing (1 tablespoon per 10 liters of water). Pour 1 liter under the root of each tomato.

Another option is to prepare a more complex fertilizer from several components. To do this, dissolve 10 ml of iodine and 10 g of boric acid in 10 liters of water, add 750 g of wood ash and mix thoroughly. dilute 0.5 liters of the finished solution with 10 liters of water. Feed the tomatoes by pouring 1.5–2 liters of the resulting mixture under one bush.