About the farm

Proper use of nitrogen fertilizers


The basic resource for the normal functioning of both plant representatives and various living organisms is nitrogen. It is part of the so-called "life-four", which also includes oxygen, hydrogen and carbon. These elements constitute the most important part of the tissue composition of most living micro and macroorganisms, and they are contained in special nitrogen fertilizers.

What is nitrogen for plants

Optimal harvest using only natural resources of the soil is almost impossible. Therefore, it is necessary restocking nutritional ingredients. What will these substances be - the garden owners think over in their own way, and the choice is influenced by the types of crops, the time of year, and the experience of previous feedings.

Chlorophyll has, for example, the nitrogen component, which is important for the absorption of solar energy, alkaloids, lipids and many more other compositions that are vital for vegetation.

Fertilizers based on this element are valuable when applied to the soil in the right period.

In the springtime, nitrogen gives saturation of young stalks in the active stage of growth, gradually moving to new buds, leaves and stems.

In the springtime, nitrogen gives saturation of young stems and buds.

After pollination of plants, nitrogenous substances reach the reproductive organs, where they settle in protein form. Protein gets great value in fruits, it is observed more active growth, increases the quantitative and qualitative component of the crop.

How to understand that the plant lacks nitrogen fertilizers

A clear sign of nitrogen deficiency is the color of the foliage - jaundicedA pale yellow version is also possible. The process of yellowing is initiated from the edge of the leaves and spreads to the center. The lamina becomes thinner and softer.

The first yellow leaves below. In extreme cases, the foliage can dry completely and fall off: all the nutrients are used to maintain the upper shoots or fruit.

The reasons for the lack of nitrogen in this case are two:

  • The plant did not receive proper feeding;
  • The ground is strong souredwhich makes it difficult to absorb nitrogen.
About the lack of nitrogen says yellowing foliage

Anyway, it is necessary to update or replace the primer, and follow the time and rules of feeding.

About the classification of fillers

The described fertilizers are obtained from ammonia of synthetic properties and are divided into several types characterized by their features:

  • Ammonia, with the described substance in the form of ammonia in combination with a mineral acid. These include ammonium chloride, bicarbonate and ammonium sulfate, ammonium fertilizers of liquid type.
  • Nitratethat possess salts of nitric acid. Sodium nitrate, potassium nitrate, calcium nitrate are considered to be this variant.
  • Amidecontaining the substance in amide form. This type implies urea, calcium cyanide, urea formaldehyde fertilizers.

There are types of fertilizers where the nitrogen component comes in several forms. It is an ammonium nitrate species, with ammonium-ammonium and ammonium nitrate. The latter can act both in ammonium and in nitrate form.

The classification and combination of additives with nitrogen are related to soil type, climatic characteristics and differences in care or another plant.

Ammonium nitrate

How much is the correct fertilizer

  • On average, as a base for fertilizing potatoes, vegetables, fruit and berry and flower crops is considered from 600 to 900 g. nitrogen per 100 square meters. meters
  • When it comes to feeding, for vegetable crops and potatoes make about 200 grams on the same 100 square meters, and for berry and fruit options - 200-300 grams.
  • For the appropriate liquid consistency the calculation goes from 15 to 30 g. on 10 l. water.
  • When planning the use of a substance outside the root, you need 25-50 g. on 10 liters. Fertilizer is distributed on 100-200 m2.
It is important to understand that all the indicated values ​​are very approximate.

For a larger guideline, we present a table with nitrogen content for any of the fillers with their name.

FertilizersItem capacity
Anhydrous ammonia82,3%
Ammonia water20,5%
Ammonium sulfate20,5-21,0%
Ammonium chloride24-25%
Sodium Nitrate16,4%
Calcium Nitrate13,5-15,5%
Ammonium nitrate
Ammonium nitrate34-35%
Calcium ammonium nitrate20,5%
Ammonia based on ammonium nitrate34,4-41,0%
Ammonia based on calcium nitrate30,5-31,6%
Ammonium sulfonitrate25,5-26,5%
Calcium cyanamide18-21%
Urea-formaldehyde and methylene-urea (slow action)38-42%
Urea Based Ammonia37-40%

For which crops is it appropriate to use nitrogen

Excessive fertilization can kill the plant.

In fact, this component is important for any plant, including when grown at home, the difference is only in its quantity. In this regard, cultures are divided into:

  1. Plants that fertilize in the spring before planting in the ground. Calculation of ammonium nitrate - 25-30 g. on 1 square meter of the area of ​​crops. These include potatoes, eggplant, pumpkin, cabbage like vegetables; Cherries, raspberries, plums, blackberries like fruit and berry crops, roses, peonies, phloxes, carnations, zinnias and others like floral varieties.
  2. Cultures that need less nitrogen fertilization 20 g. per square meter. These are vegetables such as tomatoes, cucumbers, corn, beets, garlic; fruit varieties - apples, gooseberries, currants, all annual flowers and delphinium.
  3. The third group requires moderate element filling. This includes radishes, onions, early potatoes, pears, primroses, daisies.
  4. Plants that need a minimum of nitrogen - aromatic cultures, peas and beans, as well as flowers such as heather, portulaca, Japanese azalea, rhododendron.

On the negative impact of an excess of nitrogenous feedings

Both nitrogen deficiency and excessive substance intake have a negative effect. From such an excess begins too active development of the aerial mass cultures. The leaves expand, become larger interstices.

The leaves are splendid and soft, and flowering - quick and scanty, sometimes even missing. Therefore, the ovary is formed poorly, affecting the absence of future fruits and berries.

If there is an excess of substance on the leaves, peculiar burns can be seen, and then the leaves quickly fall off, which may result in partial loss of the root system.

All crops need nitrogen. It is important to determine its dosage and make all the rules, including the characteristics of each plant.