Nitrogen fertilizers — everything grows by leaps and bounds
It is difficult to grow a good crop of vegetables and fruits without top dressing. The same applies to ornamental plants: without fertilizer, the flowers will be faded, and the lawn will be bald. Among the numerous macronutrients needed by plants, nitrogen is fundamental.
Thanks to nitrogen-containing fertilizers, the set of vegetative mass is accelerated, the root system is properly compacted, the leaves acquire a glossy sheen, the quantity and quality of the crop increase.
How do you know when it’s time to add nitrogen?
Nitrogen deficiency is manifested in slow growth and delayed flowering, the leaves fade, the stems become weak. But for some plants, there are specific signs of nitrogen starvation:
- tomatoes drop ovaries;
- beet leaves turn yellow and die;
- a red stripe forms along the edge of strawberry leaves;
- roses do not bloom;
- Fruit trees do not set fruit.
It must be remembered that an excess of nitrogen will not do any good. If you overfeed vegetables with nitrogen, then the foliage will be lush and green, but the process of ovary and fruit formation will slow down significantly. Bulbs, tubers and fruits, overfed with nitrogen, quickly deteriorate and have a very short shelf life. In addition, there is a danger of the formation of excess nitrates in vegetables, berries and fruits.
When should nitrogen fertilizers be applied?
Plants experience the greatest need for nitrogen in the spring during the period of active growth. Top dressing is brought in with the onset of warm days. In the regions of our country, it is recommended to apply nitrogen-containing complexes in mid-April, then in mid-May and the second decade of June. Later, nitrogen is no longer applied: the plants must prepare for wintering. To maximize the effect of top dressing, you must strictly follow the instructions and dosages indicated on the fertilizer packaging.
Overview of nitrogen-containing fertilizers
You can purchase mono-component (containing only nitrogen) and multi-component complex mineral fertilizers. They are available in the form of granules, powder, tablets, crystals, concentrated solutions. Let’s stop on the most popular and demanded.
- Leda ammonium nitrate with trace elements is an ammonium nitrate fertilizer containing 34% nitrogen, as well as a complex of microelements that enhance the effect of the main top dressing. It is recommended to apply in early spring, as well as in June as a soil top dressing. The greatest effect is achieved on alkaline and neutral soils.
- Calcium nitrate — in addition to nitrogen (15%), the complex includes calcium (19%). The fertilizer dissolves well, prevents the damage of plants by blossom end rot. Recommended for use on neutral and acidic soils.
- Leda carbamide (urea) — contains 46% nitrogen. The fertilizer dissolves well and is absorbed by plants, increases the acidity of the soil. To achieve the greatest effect, it is recommended to embed the granules into the soil by 5-10 cm.
- Leda azofoska is a complex fertilizer, which includes nitrogen, phosphorus and potassium. The balanced formula and high concentration of components is ideal for spring feeding of almost all vegetables, ornamental plants, lawns.
- Leda ammonium sulfate — dissolves well and is not washed out of the ground. The composition of the complex, in addition to nitrogen (21%), includes sulfur (24%), which improves the quality of vegetables and berries, and also increases the shelf life of the crop.
Many gardeners prefer organic. This approach has both pros and cons. For example, when applying manure or bird droppings, there is a risk of bringing numerous weed seeds into the garden, attracting bears from all over the area, or getting a full plate of nitrates with the harvest. In addition, due to the almost complete absence of calcium against the background of a high nitrogen content, manure and bird droppings significantly acidify the soil: a kilogram of fresh organic fertilizers lowers the pH level per square meter of soil by one. The priceless “brown gold” must be used correctly in the garden and in the garden, otherwise the damage will significantly exceed the benefits of top dressing.
Tell us in the comments about what fertilizer scheme you use in the garden and in the garden. Find a few minutes for a master class from our agronomist — you will learn how to properly fertilize plants in the spring so that you can enjoy lush flowering and abundant harvests all season long.