Carry out fertilizing of seedlings in the evening, and then turn off the phytolamp. Drops of fertilizer under the influence of sunlight or artificial light can cause burns on the leaves.
Nutrient solutions should be poured strictly under the root of plants, trying not to get on the stem and leaves. This will save cucumbers from burns and rotting.
Apply fertilizers only in moist soil, so as not to provoke burns of the root system. For example, in the morning you can water the plants with ordinary water, and in the evening with a nutrient mixture.
If you do not want to prepare fertilizers yourself, use complex means for seedlings of cucumbers or vegetables in general. The consumption rate and method of application are indicated in the instructions on the package.
Strictly observe the dosage of fertilizers when preparing working solutions. Too much concentration of nutrients can destroy plants or disrupt their normal development.

When to feed cucumber seedlings

As a rule, only 3-4 weeks pass from the moment of germination to planting cucumber seedlings in the open ground. Therefore, if you have planted seeds in a good nutritious soil, you don't have to worry about fertilizing the sprouts.

If you are not sure about the quality of the soil, you can apply fertilizers. The appearance of seedlings will also tell about the need for additional nutrition. It will definitely be needed if the sprouts have stretched , the stems have become thin, the leaves have begun to turn yellow, pale, dry, curl or have acquired a purple hue.

Cucumbers are fed twice at home. The first time is when the sprouts release the first real leaf. In the second — 3-5 days before the planned transplantation of sprouts into the open ground.

How and how to feed cucumber seedlings in the phase of one real leaf

Cucumbers have released the first real leaf and need to be fed. Frame: Gardening with Elena / YouTube

Nutrients at the very beginning of the development of sprouts will help them get stronger and start growing.

Mineral fertilizers

Prepare one of the nutrient mixtures. Carefully pour the small cucumbers under the root, trying not to get on the leaves and stems. For convenience, you can use a syringe or a syringe. One sprout will need about 50 ml of useful liquid.

In 1 water, dissolve 3 g of urea (carbamide).
In 1 liter of water, dissolve 1 g of potassium salt, 1 g of superphosphate and 1 g of ammonium nitrate.

Organic fertilizers

The nutrient solution can be prepared from the available means, which are sure to be found in every home.

In 5 liters of warm (but not hot) water, thoroughly dissolve 100 g of fresh yeast and 100 g of sugar. Leave the solution at room temperature for a day to ferment properly. Then pour the cucumbers with ready-made top dressing under the root. 50-100 ml of the mixture will be enough for one plant.
In 1 liter of water, add 1 drop of iodine, 100 ml of milk and stir the mixture thoroughly. Spray the soil liberally around the sprouts to moisten it. Such top dressing will not only provide cucumbers with nutrients, but also protect them from fungal diseases..

How and how to feed cucumber seedlings 3-5 days before planting in the open ground

At this stage, the procedure will strengthen the immunity of plants and help them better transfer the "move" to the beds.

Mineral fertilizers

Grown plants need a large concentration of macronutrients in the nutrient solution. Prepare one of the mixtures and pour cucumbers under the root. The consumption rate per plant is about 200 ml.

In 1 liter of water, dissolve 3 g of ammonium nitrate or urea, 3 g of potassium sulfate and 4 g of superphosphate.
In 1 liter of water, dilute 4 g of nitroammophoski.

Organic fertilizers

Choose one of two nutritional mixes. One plant will need 200-250 ml of fertilizer.

In 1 liter of water, dissolve 100 g of wood ash. Let the solution stand at room temperature for 5-7 days. After that, pour the cucumbers with the finished mixture.
Dilute 5 ml of liquid vermicompost in 1 liter of water. Leave the solution in a warm place for 3-4 hours, and then pour the seedlings.