Calculation of dosage and application specifics for mineral fertilizers

Calculation of dosage and digestibility of mineral nutrition

For accurate planning of top dressing, it is important to distinguish between simple fertilizers containing one nutrient (nitrogen, phosphorus, potassium) and complex ones, which consist of two or more elements. Active ingredient is expressed as a percentage of the fertilizer mass. An accurate calculation allows providing plants with the necessary application rate of nutrients without wasting the products.

• Nitrogen (N) in urea — 46 %
• Nitrogen (N) in ammonium nitrate — 34 %
• Phosphorus (P₂O₅) in double superphosphate — 38–46 %
• Potassium (K₂O) in potassium chloride — 60 %

To calculate the physical mass of fertilizer based on a dose of active ingredient, divide the target dose by the percentage of the element content and multiply by 100. For example, to apply 10 g of nitrogen per 1 m², you will need about 22 g of urea (10 × 100 / 46 = 21.7 g) or 29 g of ammonium nitrate (10 × 100 / 34 = 29.4 g).

For reverse calculation — determining the amount of the element applied based on a known physical mass — the mass of the fertilizer is multiplied by the percentage of the active ingredient and divided by 100. Thus, when applying 20 g of urea, the soil will receive approximately 9 g of nitrogen (20 × 46 / 100 = 9.2 g), and when applying 20 g of ammonium nitrate — about 7 g of nitrogen (20 × 34 / 100 = 6.8 g).

Nutrients from mineral fertilizers are in a water-soluble form and are assimilated by plants faster than those from organic matter. At the same time, the utilization rates of elements vary significantly depending on the form of the fertilizer.

Nutrient	Utilization from organic fertilizers, %	Utilization from mineral fertilizers, %
Nitrogen (N)	20–30	35–45
Phosphorus (P₂O₅)	20–40	10–20
Potassium (K₂O)	40–60	60–70

Impact on soil and risks of using ballast substances

Mineral fertilizers do not impair the physical properties of the soil — its structure, density, or moisture capacity. Due to the improved development of the root system of plants, they can slightly increase the humus content, as well as activate soil microflora due to balanced nutrition. The chemical elements of fertilizers are natural to the environment and participate in all physiological processes of plants.

A drawback of many fertilizers is the presence of accompanying (ballast) elements originating from natural raw materials: fluorine, chlorine, sodium, sulfur, strontium, cadmium, and others. With long-term application of high doses, they accumulate in the soil, reducing its soil fertility and product quality. Fertilizers without deep chemical processing contain the most ballast substances (phosphorite meal, potassium chloride), whereas in double superphosphate, ammophos, potassium sulfate, and potassium nitrate, their quantity is insignificant.

When choosing fertilizer forms, consider the sensitivity of crops to accompanying elements. Below are the characteristics of ammonium chloride, which requires caution during application.

Indicator	Properties and features of using ammonium chloride (NH₄Cl)
Nutrient content	24–25 % nitrogen, 66.6 % chlorine
Behavior in soil	Highly water-soluble, not leached, acidifies the soil (on acidic soils, it requires mixing with limestone or phosphorite meal)
Impact on crops	May reduce the harvest quality of potatoes, tobacco, vegetable, and fruit crops
Method and timing of application	In dry form — 30 g/m². It is safer to apply in advance for autumn ploughing.

Application of phosphorus, potassium, and complex fertilizers

For the proper selection of fertilizers for a specific crop, it is necessary to consider the solubility of the active ingredients and the soil reaction. Phosphorus and potassium forms differ in their behavior in the soil profile: some are easily leached, others are firmly bound by the soil. The application of potassium requires caution due to the sensitivity of several crops to accompanying chlorine ions.

Complex fertilizers allow for balancing plant nutrition at different stages of the growing season. It is important for an agronomist to select the ratio of nitrogen, phosphorus, and potassium depending on the development phase. Starter application requires a high concentration of phosphorus, whereas fully soluble balanced mixtures are more effective for current top dressing during the growing season.

Fertilizer	Formula	Active ingredient content (%)	Properties and conditions of use	Application rate (dry, g/m²)
Double superphosphate	Са(Н2РО4)	up to 45% and higher P2О5	For all soils and all crops. Soluble in water, not leached, does not acidify the soil. Applied during digging, during sowing in furrows, holes, rows, as well as in the form of liquid top dressing.	40–60
Phosphorite meal	Са3(РО4)2 · СаСО3	up to 25% P2О5	For acidic soils (podzolic, grey forest, podzolized and leached chernozems). In compost, it can be used on all soils. Insoluble in water, has a long-term residual effect (up to 10 years or more).	30–40
Potassium chloride	KCl	50–60% К2О	For all soils under all main crops. Soluble in water, not leached, acidifies the soil.	20–30
Potash salt	KCl + KCl · NaCl	41–44% К2О	Recommended for beet, cabbage, radish, carrot. Contains sodium, which increases the sugar content of root crops. Soluble in water, acidifies the soil.	30–40
Potassium sulfate	K2SO4	45–52% К2О	For all soils under all crops; especially valuable for chlorine-sensitive plants. Highly soluble, not leached, acidifies the soil.	20–30
Potassium magnesium sulfate (kalimagnesia)	K2SO4 · MgSO4	26–28% К2О, 9% MgO	For chlorine-sensitive crops, especially on light soils. Available in granulated (grade A) and powder (grade B) forms.	30–35
Ash (potash)	—	7–13% К2О (as К2СО3)	For all soils under all crops (an excellent chlorine-free fertilizer for potatoes). Hardwood ash is richer in potassium. Neutralizes acidity due to calcium oxides; phosphorus in ash is well absorbed, contains micronutrients.	50–100
Potassium nitrate	КNО3	13% N, 46% К2О	For vegetable crops, especially in a greenhouse. Valuable for chlorine-sensitive crops. Applied in spring before sowing, during sowing, in the form of dry and liquid top dressing during fruit set (tomatoes, cucumbers). Soluble, nitrogen can be leached.	20–35
Ammophos	NН4Н2РО4	11–12% N, 46–60% Р2О5	For all soils under all crops when it is necessary to provide more phosphorus than nitrogen. Applied in autumn, spring, before/during sowing and as top dressing. Highly soluble, not leached.	20–30
Diammophos	(NН4)2Н2РО4	18% N, about 50% Р2О5	For all soils under all crops. Applied in autumn, spring, before sowing, during sowing and as top dressing. Dissolves well, not leached.	20–30
Nitrophoska, Nitrophos, Nitroammophos	—	Various	For all soils under all vegetable crops before/during sowing and as top dressing. Highly soluble. Nitrophoska grades: 17:17:17, 16:16:13, 13:16:13, 12:12:12. Nitrophos contains N and P (23.5:17; 24:14). Nitroammophos contains N and P (23:23).	50–60 (for nitrophoska)
Kristallin (rastvorin)	—	10–20% N, 3–17% Р2О5, 8–17% К2О	Fast-dissolving fertilizer. Best used for top dressing of plants.	50–60

Micronutrient fertilizers and chemical soil conditioners

Micronutrients activate enzymatic processes and increase the resistance of crops to stress factors. Their application is most effective in the form of foliar treatments or during preparation of seed material. The need for a specific micronutrient is often dictated by the soil type and its acidity level.

• Residual effect of phosphorite meal — up to 10 years or more
• Fineness of limestone grinding — 1.6–1.0 mm
• Magnesium share in kalimagnesia — 9%
• Copper concentration in copper sulfate — 25.4%

Chemical reclamation of acidic soils allows optimizing the environment for most crops. Various conditioners differ in the speed of neutralization and the content of associated elements like magnesium. The choice of a specific liming material depends on the particle size distribution of the soil and the urgency of the required effect.

Micronutrient fertilizer	Formula	Active ingredient content (%)	Conditions of use	Working solution (%)
Boric acid	Н3ВО3	17% boron	For all crops, on all soils (especially limed ones). Foliar top dressing, seed soaking.	0.02
Borax	Na2В4О7·10Н2О	11.5% boron	For all crops, on all soils (especially limed ones). Foliar top dressing, seed soaking.	0.02
Ammonium molybdate	[(NH4)6Mo24*4H2O]	about 50% molybdenum	For all crops, primarily on acidic soils. Foliar top dressing.	0.01
Ammonium sodium molybdate	NH4NaMoO4	35% molybdenum	For all crops, primarily on acidic soils. Foliar top dressing.	0.01
Manganese sulfate	MnSO4	22.8% manganese	On neutral and slightly alkaline soils. Foliar top dressing, seed soaking.	0.02
Zinc sulfate	ZnSO4	22% zinc	For all crops, on all soils. Foliar top dressing.	0.02
Copper sulfate (blue vitriol)	CuSO4	25.4% copper	For all crops, on all soils, especially peatlands. Foliar top dressing.	0.02
Cobalt sulfate	Со SO4	—	For all crops, on all soils. Foliar top dressing.	0.02

Chemical ameliorant	Composition and active ingredient	CaCO3 equivalent (%)	Action characteristics
Limestones	CaCO3 (45–56% CaO)	85–100 (in terms of CaCO3 + MgCO3)	Slow action. Requires a grinding fineness of 1.6–1.0 mm and high-quality raw material.
Chalk	CaCO3	90–100	Acts faster than limestone.
Quicklime	CaO	more than 170	Strong and fast-acting liming material.
Slaked lime	Ca(OH)2	up to 135	Strong and fast-acting fertilizer.
Dolomite flour	CaCO3 and MgCO3	about 100	Acts slower than lime tuffs. Effective on light soils with magnesium deficiency.
Gumi-Lime	CaCO3, MgCO3 (no less than 55%), boron (0.1%), humates (0.1%), Phytosporin-M (0.5%)	no less than 55	Acts faster than limestone. Stimulates growth, boosts immunity, protects against disease, and eliminates boron deficiency.

How humic substances affect soil and plants

The use of peat and brown coal in their pure form is primarily a method of mechanical reclamation. In raw materials, nutrients are in a poorly accessible form, so in over-compacted soils, they work primarily as loosening agents. It is much more effective to apply organomineral fertilizers (OMF). In addition to basic nutrition, they contain physiologically active humic acids, which directly influence crop productivity.

The direct effect of humic substances consists in stimulating metabolism and improving the respiration of plant cells. Under the influence of humates, the enzymatic apparatus of plants is activated, which allows them to more fully absorb nutrients even under unfavorable environmental conditions or nutrient imbalances. As a result, the plant's resistance to drought and high temperatures increases, and the concentration of sugars and vitamin C in fruits and vegetables rises.

The indirect action of humic compounds is aimed at improving the root habitat. They optimize soil density and water-physical properties, help retain soil moisture, and activate beneficial microflora. In addition, humic acids bind toxic agents — pesticide residues and heavy metals — and also increase the utilization rate of nutrients from mineral fertilizers.

Application regulations and dosages of humic fertilizers

The domestic industry produces a wide range of OMFs from local raw materials, including brands such as Agricola, Ispolin, Ogorodnik, Zeleny Kover, and Pole Chudes. Brown coals from the Kumertau deposit are also used for humate production. Based on them, a series of GUMI preparations (brands Gumi-20, Gumi-20M, Gumi-30, Gumi-30M, Gumi-90, Gumi-90M), Borogum-M, and the "Bogatyy" line (specialized compositions "Vegetables, Berries, Lawn, Flowers" and "House") have been created.

A separate class consists of OMFs based on composted poultry manure, additionally enriched with macro-elements, micro-elements, and humates. A prominent representative of this group is the "Gumi-Omi" line. Preparations of this series are available in specialized modifications for specific crop types.

• "Gumi-Omi" (brands: Vegetables, berries, flowers; Tomato, eggplant, pepper; Cucumber, zucchini, cucurbits; Potato, carrot, radish, beet, turnip, radish; Potato; Onion, garlic);
• Berry group (Strawberry, garden strawberry, raspberry, currant) and Fruit trees and shrubs - universal;
• Flower series (Annual and biennial flowers; Perennial flowers; Bulbous and cormous flowers; Budding flowers; Garden flowers – universal; Roses);
• Houseplants and ornamental plants (Violet-geranium; Lemon-mandarin; Vines; Cactus-aloe; Ficus-palm; Lawn; Conifers; Ornamental shrubs);
• Specialized and seasonal compositions (Nitrogen; Phosphorus; Potassium; Compostin; Autumn; Spring).

• Working concentration of humates — thousandths and ten-thousandths of a percent
• Proportion of Gumi-30 stock solution — 300 g of paste per 600 ml of water
• Soaking time for roots and cuttings — from 12 to 24 hours
• Interval for growing season treatments — 2 weeks

For the liquid preparation "Gumi-20", solutions are prepared immediately before use. When using "Gumi-30 Universal" paste, it is necessary to first prepare a concentrated stock solution. This allows for accurate dosing of the active ingredient during subsequent dilution.

1. Dissolve 300 g of "Gumi-30 Universal" paste in 600 ml of water to obtain a stock solution.
2. Measure out the required volume of stock solution in accordance with the application rate for the specific operation.
3. Dilute the measured volume in water and proceed with treating the plants or planting material.

Application method and treatment object	Doses of "Gumi-20" preparation (liquid)	Doses of "Gumi-30 Universal" stock solution (from paste)
Soil irrigation in spring or autumn (per 1 m²)	7.5 ml per 10 l of water	15 ml per 10 l of water
Seed soaking	1 drop per 100 ml of water	2 drops per 100 ml of water
Soaking of cuttings and seedlings roots (for 12–24 hours)	10 drops per 1 l of water	20 drops per 1 l of water
Irrigation (per 2 m²) or spraying (per 100 m²) during active growth and flowering (2-week interval)	7.5 ml per 10 l of water	15 ml per 10 l of water
Tuber treatment before planting (per 8 kg)	30 ml per 1 l of water	60 ml per 1 l of water (for potatoes)
Irrigation and spraying of houseplants during active growth and flowering (2-week interval)	1 drop per 100 ml of water	4 drops per 200 ml of water

The application of organo-mineral and bio-activated fertilizers allows not only to provide plants with necessary nutrition but also to protect them from unfavorable environmental conditions. In field and greenhouse practice, the efficiency of such preparations directly depends on following application regulations and the correct preparation of working solutions. Proven application rates of various humic and complex formulations for major crop types are provided below.

Practice of Using Humic and Organo-Mineral Fertilizers

Gumi-90 preparations in dry powder form and Gumi-K-OLYMPIC in gel form require the preliminary preparation of a concentrated stock solution. In addition to nitrogen, phosphorus, and potassium in an NPK ratio of (1:1.5:1), Gumi-K-OLYMPIC contains boron (0.17%), molybdenum (0.007%), sulfur (0.015%), selenium (0.0002%), lithium (0.0005%), as well as a complex of chelated microelements (Cu — 0.01%, Co — 0.002%, Mn — 0.05%, Ni — 0.002%, Zn — 0.01%, Cr — 0.0007%) and over 80 natural trace elements and minerals. Dilution of stock solutions and their further dosages for specific technological operations differ significantly.

1. For Gumi-90 (powder): dissolve 6 g of the preparation in 100 ml of water to obtain a stock solution.
2. For Gumi-K-OLYMPIC (gel): dissolve 300 g of the preparation in 600 ml of water to obtain a stock solution.

Application method and purpose	Dosage of Gumi-90 stock solution (powder)	Dosage of Gumi-K-OLYMPIC stock solution (gel)
Soil irrigation in spring or autumn	30 ml per 10 l of water per 1 m²	15 ml per 10 l of water per 1 m²
Seed soaking	4 drops per 100 ml of water	2 drops per 100 ml of water
Soaking cuttings and transplant roots (for 12–24 hours)	2.5 ml per 1 l of water	20 drops per 1 l of water
Irrigation (per 2 m²) or spraying (per 100 m²) during active growth and flowering every 2 weeks	30 ml per 10 l of water	15 ml per 10 l of water
Treatment of potato tubers before planting	100 ml per 1 l of water (for 8 kg of tubers)	60 ml per 1 l of water (for 8 kg of tubers)
Irrigation and spraying of indoor plants during growth and flowering every 2 weeks	8 drops per 200 ml of water	4 drops per 200 ml of water

The liquid complex fertilizer Bogatyi (OGOROD line) is supplied in a bio-activated form and contains basic nutrients in an N-2%, P-2%, K-3% ratio. The microelement composition includes copper (0.003%), cobalt (0.0008%), manganese (0.03%), nickel (0.0008%), zinc (0.003%), molybdenum (0.001% and 0.00025%), sulfur (0.015% and 0.003%), selenium (0.00003%), lithium (0.0001%), chromium (0.0003%), and boron (0.2%). The presence of Fitosporin-M and the humic preparation Gumi-20 in the composition ensures plant protection against pathogens and stress factors, and also improves fruit sugar content and shelf life.

• Soaking seeds, bulbs, and corms: 5 drops per 100 ml of water immediately before sowing for 1–2 hours.
• Irrigation of seedlings (every 7–10 days from full emergence to planting): 5 ml per 2 l of water (rate calculated for 50 plants).
• Spraying during the growing season (3–5 treatments per season): 20–30 ml per 10 l of water per an area of 100–200 m².
• Irrigation of vegetables and strawberries (every 2 weeks): 20–30 ml per 10 l of water (working solution consumption — 5–10 l per 1 m²).
• Irrigation of fruit trees, shrubs, and grapevines (every 2 weeks): 20–30 ml per 10 l of water (working solution consumption — 5–10 l per one plant).

The Borogum-M preparation is specifically designed to improve fruit set, stimulate flowering, and prevent the formation of barren flowers. It contains 1.4% boron, 3% Gumi-20 preparation, macronutrients (nitrogen — 1.4%, phosphorus — 0.8–1.0%, potassium — 1.0%), and a wide spectrum of microelements, including molybdenum (0.007% and 0.00025%), sulfur (0.015% and 0.002%), and chelated forms of copper (0.002%), cobalt (0.00025%), manganese (0.01%), nickel (0.00025%), zinc (0.01%), selenium (0.00002%), lithium (0.0001%), and chromium (0.0002%). The main purpose of this formulation is to stimulate fruit and root formation, as well as to protect crops from fruit set shedding.

• Spraying vegetating plants: 50 ml of preparation per 3 l of working solution for treating 100 m² of plantings.
• Pre-planting tuber treatment: 30 ml of preparation per 1 l of water for treating 30 kg of potatoes.
• Soaking seeds before sowing: 1 drop of preparation per 2 teaspoons of water for treating 10 g of seeds for 12–24 hours.

The dry organo-mineral fertilizer Gumi-Omi UNIVERSAL is used to improve soil structure, increase soil fertility, and protect crops from frosts, drought, and heavy metal salts. The preparation contains boron (100–150 mg/kg) and copper (50–60 mg/kg), as well as an organic base and a complex of macronutrients. Its balanced formula is suitable for the majority of vegetable, berry, and floral crops.

• Organic matter in Gumi-Omi — 20%
• Nitrogen (N) in Gumi-Omi — 6.4%
• Phosphorus (P) in Gumi-Omi — 5.5%
• Potassium (K) in Gumi-Omi — 6.2%
• Gumi content — 0.6%

• For soil preparation (spring or autumn): 0.7 kg of dry fertilizer per 10 m².
• Locally during sowing or planting: 0.7 kg per 30 m² (applied in furrows, holes, or inter-row spaces).
• Fertilizer irrigation: 50–70 g of the product per 10 l of working solution for treating 10 m² of crops.

Practical application of bio-activated organomineral fertilizers of the "Gumi-Omi" series

To optimize the nutrition of vegetable, field, and berry crops, complex powdered fertilizers of the "Gumi-Omi" series are used in modern technologies. These products combine the functions of mild organic nutrition, mineral top dressing, and a physiological growth stimulant. The presence of the humic component allows plants to more effectively cope with abiotic stresses — drought, frost, and also reduces the toxic effect of heavy metals in the soil. Systematic use of these fertilizers contributes to restoring the soil structure and increasing its natural soil fertility.

The basic composition of most specialized brands in the series is standardized regarding the content of organic matter, microelements, and growth regulators. This allows an agronomist to accurately calculate the total load on the soil when planning a nutrition system.

• Organic matter — 20%
• "Gumi" growth regulator — 0.6%
• Boron (B) — 100–150 mg/kg
• Copper (Cu) — 50–60 mg/kg

The content of basic macronutrients varies depending on the physiological needs of a specific crop. The exact proportions of nitrogen, phosphorus, and potassium for each type of fertilizer are shown in the table below (for the "Berry" brand, the manufacturer does not indicate the detailed macronutrient composition in the basic specification).

Fertilizer brand ("Gumi-Omi")	Nitrogen (N), %	Phosphorus (P), %	Potassium (K), %
Tomato, Eggplant, Pepper	5.9	6.4	5.0
Cucumber, Squash, Melons	5.7	5.4	5.9
Carrot, Radish, Beet, Turnip, Radish	5.7	5.5	5.9
Potato	5.7	5.5	5.9
Onion, Garlic	6.0	5.6	4.8

Application rates of the product depend on the method of its incorporation into the soil and the plant's growing season phase. The most effective methods are broadcast application before autumn or spring ploughing, local distribution in the root zone during planting, and top dressing in the form of irrigation with a working solution.

Crop and fertilizer brand	Application for ploughing (spring / autumn)	Local application (sowing / planting)	Fertilizer irrigation (per 10 m²)
Tomato, eggplant, pepper	0.7 kg per 10 m²	0.7 kg per 30 m² in holes, furrows, or inter-row spaces	50–70 g per 10 l of water
Cucumber, squash, melons	0.7 kg per 10 m²	0.7 kg per 30 m² in holes, furrows, or inter-row spaces	50–70 g per 10 l of water
Carrot, radish, beet, turnip, radish	0.7 kg per 10 m²	0.7 kg per 30 m² in holes, furrows, or inter-row spaces	50–70 g per 10 l of water
Potato	10 kg per 100 m²	2–3 kg per 100 m² locally in holes	1 kg per 100 l of water (per 100 m²)
Onion, garlic	0.7 kg per 10 m²	0.7 kg per 30 m² in holes, furrows, or inter-row spaces	50–70 g per 10 l of water
Strawberry, garden strawberry, raspberry, currant ("Berry")	—	12 g per plant (when planting strawberries)	0.7 kg per 10 m² (top dressing in spring and summer)

Seasonal and specialized organomineral mixtures

For the stable development of berry plantations and ornamental plantings, a balance of elements during specific growth phases is important. Specialized and seasonal brands of "Gumi-Omi" organomineral fertilizers are designed precisely to solve this task. Humic acids in their composition reduce plant stress from weather fluctuations and the effect of heavy metals, while composted organic matter restores the soil structure. Regular use of these mixtures activates soil microflora and increases overall yield. The exact application rates and methods for the products are provided below.

• Incorporation depth of dry mixtures — 5–10 cm
• Nitrogen share in "Gumi-Omi NITROGEN" — 23%
• Phosphorus share in "Gumi-Omi PHOSPHORUS" — 25%
• Potassium share in "Gumi-Omi POTASSIUM" — 30%

Fertilizer brand	Composition and active ingredients	Regulations and application rates
Gumi-Omi (for strawberries and berry shrubs)	Organic matter — 20%; N — 3.6%, P — 4.5%, K — 3.9%; boron — 100–150 mg/kg, copper — 50–60 mg/kg; Gumi — 0.6%.	Application in strawberry inter-rows with mandatory covering with soil. Fertilizer irrigation for strawberries: 70 g per 10 l of working solution (for 5 m² of crops). Fertilizer irrigation for currant and raspberry: 70 g per 10 l of working solution (for 2 bushes).
Gumi-Omi Spring (powder)	Organic matter — 15%; N — 7.0%, P — 2.0%, K — 5.0%; microelements: Cu — 0.001%, Co — 0.001%, Mn — 0.001%, Mo — 0.005%, Zn — 0.001%, B — 0.005% (chelates: Cu, Co, Mn, Mo, Zn); Gumi — 0.3%.	Spring soil digging: 1 kg per 10 m². Locally during sowing or planting in rows, holes, or between rows (at a depth of 5–10 cm): 1 kg per 10 m². Fertilizing irrigation: 1 kg per 100 l of working solution (per 100 m²). Spring top dressing: 1 kg per 2 trees or 3 fruit-berry shrubs (with incorporation to a depth of 5–10 cm).
Gumi-Omi Autumn (powder)	Organic matter — 15%; N — 1.0%, P — 5.0%, K — 8.0%; microelements: Cu — 0.001%, Co — 0.0001%, Mn — 0.001%, Mo — 0.0005%, Zn — 0.001%, B — 0.005% (chelates: Cu, Co, Mn, Mo, Zn); Gumi — 0.3%.	Autumn or spring soil digging: 1 kg per 10 m². Locally during sowing or planting in rows, holes, or between rows (at a depth of 5–10 cm): 1 kg per 10 m². Autumn application to the tree trunk circle: 1 kg. Application into the planting hole: 1 kg per 1 tree or 2 fruit-berry shrubs.
Gumi-Omi Garden Flowers Universal (powder)	Organic matter — 20%; N — 3%, P — 7%, K — 6%; boron — 100–300 mg/kg, copper — 100–300 mg/kg; Gumi — 0.6%. Chlorine-free.	Application to soil: 50 g per 0.5 m². Fertilizing irrigation: 50 g per 5 l of water (per 10 plants).
Gumi-Omi Bud-Flowers (powder)	Composted organics — 20%; N — 4%, P — 9%, K — 9%; boron — 100–300 mg/kg, copper — 100–300 mg/kg; Gumi — 0.6%. Chlorine-free.	Fertilizing irrigation during bud formation (50 g per 5 l of water): indoor flowers — 5 ml per plant; balcony flowers — 15 ml per plant; garden flowers — 500 ml per plant.

Macro-element fertilizers for nutritional correction

Mono-component mixtures help to quickly replenish the deficit of key nutrients without the risk of salinization and suppression of soil microorganisms. The "Gumi-Omi" preparations in this group contain concentrated doses of nitrogen, phosphorus, or potassium, supplemented with a soft organic substrate. They are completely free of chlorine and additionally enriched with a complex of natural microelements. This allows for flexible correction of feeding schedules on all types of soil and during all periods of the growing season. The table below systematizes dosages for root treatments and base application.

Fertilizer brand	Composition and active ingredients	Regulations and application rates
Gumi-Omi NITROGEN (powder)	Organic matter — 20%; Mineral components: urea; N — 23%, P — 1.2%, K — 0.25%; microelements: boron — 100–150 mg/kg, copper — 50–60 mg/kg, as well as Mn, Ca, Mg, Fe, Zn, Co, Mo, etc.; Gumi — 0.5%. Chlorine-free.	Fertilizing irrigation: 50 g per 10 l of working solution (per 10 m²). Spring application to soil for all crops: 0.5 kg per 10 m².
Gumi-Omi PHOSPHORUS (powder)	Organic matter — 10%; Mineral components: superphosphate; P — 25%, N — 0.5%, K — 0.5%; microelements: boron — 100–150 mg/kg, copper — 50–60 mg/kg, as well as Mn, Ca, Mg, Fe, Zn, Co, Mo, etc.; Gumi — 0.5%. Chlorine-free.	Fertilizing irrigation: 50 g per 10 l of working solution (per 10 m²). Autumn and spring application to soil for all crops: 0.5 kg per 10–20 m².
Gumi-Omi POTASSIUM (powder)	Organic matter — 8%; Mineral components: potassium sulfate; K — 30%, P — 1.2%, N — 0.5%; microelements: boron — 100–300 mg/kg, copper — 100–300 mg/kg, as well as Mn, Ca, Mg, Fe, Zn, Co, Mo, etc.; Gumi — 0.6%. Chlorine-free.	Fertilizing irrigation: 50 g per 10 l of working solution (per 10 m²). Autumn and spring application to soil during digging for all crops: 0.5 kg per 10–20 m².

The decorative properties of lawns and floral crops depend directly on the balance of mineral nutrition and soil structure. To maintain their growing season, protect against infections and environmental stress factors, specialized soft organomineral mixtures are used. The use of such complexes allows not only delivering nutrients in an accessible form but also improving the hydro-physical properties of the substrate.

Dry powder mixtures of the "Gumi-Omi" series are oriented toward specific groups of decorative crops, taking into account their nutrient requirements. The preparations contain humic substances to stimulate root formation, a nitrogen-phosphorus-potassium complex, and microelements. Application is carried out both in dry form during soil preparation and bulb planting, and in the form of working solutions for root top dressing.

• Organic matter in dry mixtures — 20%
• Concentration of bioactivated Gumi-20 — 10%
• Phytosporin-M, L in the "Decor Rich" preparation — 1%
• Consumption of "House Rich House" solution — 12 ml per 1 l of water
• Gumi content in dry fertilizer for bulbous plants — 0.6%
• Gumi content in dry fertilizer for annuals — 0.4%

Fertilizer and target crops	Composition of active ingredients	Application method	Application rate of the preparation and working solution
Gumi-Omi Bulbous and cormous flowers (crocus, hyacinth, narcissus, dahlia, gladiolus, lily, iris, begonia, tulip, freesia)	Organic matter — 20%; nitrogen — 4%, phosphorus — 9%, potassium — 9%; boron — 100–300 mg/kg, copper — 100–300 mg/kg; Gumi — 0.6%	Dry application with incorporation into the soil	50 g per 0.5 m² (or locally: 12 g per bulb of crocus, hyacinth, narcissus, tulip, iris; 24 g per bulb of begonia, dahlia, freesia, lily)
		Fertilizing irrigation (4 times per growing season)	50 g per 5 l of working solution for 10 plants
Gumi-Omi Annual and biennial flowers (pansies, asters, zinnias, daisies, forget-me-nots, carnations, chamomiles, stocks, marigolds, etc.)	Organic matter — 20%; nitrogen — 9%, phosphorus — 10%, potassium — 6%; boron — 100–300 mg/kg, copper — 100–300 mg/kg; Gumi — 0.4%	Dry application before sowing or planting in the soil (in the row spacing or in the planting hole)	50 g per 0.5 m² (for 12 plants)
		Fertilizing irrigation	50 g per 10 l of working solution for 1.5 m²
Gumi-OMI Bogateishee Lawn (powder)	Organic matter — 20%; nitrogen — 12%, phosphorus — 6%, potassium — 8%; boron — 100–300 mg/kg, copper — 100–300 mg/kg; Gumi — 0.6%	Application to the soil before seed sowing	10 kg per 30 m²
		Dry broadcasting over the lawn surface	10 kg per 30 m²
		Fertilizing irrigation	10 kg per 60 l of working solution for 60 m²

For perennial flower crops (chamomile, peony, chrysanthemum, astilbe, clematis), the specialized "Gumi-Omi Perennial" formula is used. It contains 10% nitrogen, 9% phosphorus, 9% potassium, 100–300 mg/kg each of boron and copper, as well as 0.6% Gumi with 20% organic matter. The procedure for working with this group of plants during planting and subsequent care includes several sequential stages.

1. When planting and transplanting perennials, apply 50 g of the preparation locally into the hole under one plant.
2. Carry out spring dry top dressing at a rate of 50 g per plant.
3. Prepare a working solution for irrigation (50 g per 5 l of water) and apply it under the bush depending on age: 1 l for one-year-old, 2 l for two-year-old, and 5 l for five-year-old plants.

Application of liquid organomineral complexes

Liquid complex preparations of the "Decor Bogaty" and "Dom Bogaty" series are designed to quickly eliminate nutrient deficiencies and protect against pathogens. Integrated into their composition are the biofungicide Fitosporin and the stimulant Gumi, which ensures a comprehensive protective effect. These fertilizers do not contain chlorine, which eliminates the risk of substrate salinization in greenhouses or root system burns. Treatments are carried out by foliar spraying or soil drenching.

Preparation and purpose	Composition of macro- and micronutrients	Application method	Application rate and frequency
DECOR BOGATY Lawn-Flowers (liquid; improves growth, decorative quality, emergence, soil structure, and stress resistance)	Nitrogen — 2%, phosphorus — 2%, potassium — 3%. Chelates: Co-0.0001%, Mn-0.03%, Zn-0.003%, Cu-0.003%, Ni-0.0008%, Cr-0.0003%. Mineral: B-0.2%, Mo-0.001%, Li-0.0001%, S-0.003%, Se-0.00003%. Gumi-20 — 10%, Fitosporin-M, L — 1%	Foliar spraying	20–30 ml per 10 l of water for 100–200 m² (3–5 times per growing season)
		Root watering	20–30 ml per 10 l of water for 1–2 m² (every 2 weeks)
DOM BOGATY DOM (liquid; provides nutrition, growth acceleration, and protection against stress, overwatering, drying out, cold, and pests)	Nitrogen — 0.5%, phosphorus — 0.5%, potassium — 0.5%. Chelates: Co-0.0002%, Mn-0.01%, Zn-0.001%, Cu-0.001%, Ni-0.0002%, Cr-0.0001%. Mineral: B-0.05%, Mo-0.0003%, Li-0.0004%, S-0.0008%, Se-0.00001%. Contains Gumi-20 and Fitosporin	Spraying and watering of indoor flowers	12 ml per 1 l of water. From March to October — once every 7–10 days; in late autumn and winter — once a month
		Spraying and watering of transplants, greens, and berries indoors in winter	12 ml per 1 l of water, every 7–10 days

Specialized organomineral mixtures of the "Gumi-Omi" series

For targeted nutrition of ornamental and potted crops during their period of active growth, chlorine-free powdered organomineral mixtures are used. They contain a balanced NPK complex, organic matter, micronutrients, and the natural growth stimulant Gumi. Such a composition provides plants with accessible nutrition without the risk of substrate salinization.

Fertilizer brand and target crops	Content of macronutrients and organic matter	Micronutrients and bio-components	Application regime and application rates
Gumi-Omi Violet-Geranium (fuchsia, asparagus, gloxinia, nerine, amaryllis, etc.)	Organic matter — 20% Nitrogen (N) — 7% Phosphorus (P) — 7% Potassium (K) — 7%	Boron — 100–300 mg/kg Copper — 100–300 mg/kg Gumi — 0.6% Phytosporin-M — 0.5%	Fertilizer irrigation during the growing season 2 times a month. Dissolve 50 g of the preparation in 5 l of water. Consumption of the working solution: 100 ml per 1 kg of soil.
Gumi-Omi Lemon-Mandarin (orange, coffee, bitter orange, etc.)	Organic matter — 20% Nitrogen (N) — 7% Phosphorus (P) — 7% Potassium (K) — 10%	Boron — 100–300 mg/kg Copper — 100–300 mg/kg Gumi — 0.6%	Fertilizer irrigation during the growing season 2 times a month. Dissolve 50 g of the preparation in 5 l of water. Consumption of the working solution: 200 ml per 1 kg of soil.
Gumi-Omi Ficus-Palm (dracaena, aralia, date palm, chamaedorea, etc.)	Organic matter — 20% Nitrogen (N) — 7% Phosphorus (P) — 7% Potassium (K) — 7%	Boron — 100–300 mg/kg Copper — 100–300 mg/kg Gumi — 0.6%	Fertilizer irrigation during the growing season 2 times a month. Dissolve 50 g of the preparation in 5 l of water. Consumption of the working solution: 200 ml per 1 kg of soil.
Gumi-Omi Lianes (alocasia, aralia, syngonium, monstera, etc.)	Organic matter — 20% Nitrogen (N) — 5% Phosphorus (P) — 5% Potassium (K) — 5%	Boron — 100–300 mg/kg Copper — 100–300 mg/kg Gumi — 0.6%	Fertilizer irrigation during the growing season 2 times a month. Dissolve 50 g of the preparation in 5 l of water. Consumption of the working solution: 200 ml per 1 kg of soil.
Gumi-Omi Cactus-Aloe (cactus, kalanchoe, agave, aloe, sedum)	Organic matter — 20% Nitrogen (N) — 3% Phosphorus (P) — 6% Potassium (K) — 6%	Boron — 100–300 mg/kg Copper — 100–300 mg/kg Gumi — 0.6%	Fertilizer irrigation during the growing season 2 times a month. Dissolve 50 g of the preparation in 5 l of water. Consumption of the working solution: 100 ml per 1 kg of soil.

Preparations for restoring soil fertility and improving soil structure

Restoring soil fertility in depleted soils requires a complex approach: reactivation of beneficial microflora, accumulation of humus, and improvement of nutrient uptake. To solve these tasks in the spring and autumn periods, specialized humus preparations and long-acting soil improvers are used. They help plants cope with stress, increase the shelf life of the harvest, and neutralize toxic compounds in the soil complex.

• Application rate of "Dar Plodorodiya" — 0.5 kg per 300 l for 3 ares (300 m²)
• Application rate of "Hozyain-Batyushka" — 1 kg per 10–20 m²
• Growth of beneficial microflora — 5–10 times
• Increase in nutrient uptake — by 25–30%
• Preservation of produce during storage — 1.5–2 times higher

The bio-activated humus concentrate "Dar Plodorodiya" is produced in paste form and is used for soil application in spring and autumn. The preparation suppresses pathogens, promotes soil health, and activates its natural biological processes. This increases the overall resistance of crops to diseases, pests, drought, and frosts.

The composition of the "Dar Plodorodiya" concentrate includes:

• macronutrients: nitrogen — 1%, phosphorus — 1%, potassium — 2%;
• micronutrients in biological chelated form: Co — 0.0003%, Mn — 0.01%, Zn — 0.003%, Cu — 0.003%, Ni — 0.0003%, Cr — 0.0003%;
• micronutrients in mineral form: B — 0.01%, Mo — 0.0003%, Li — 0.0003%, Se — 0.00003%;
• bioactive substances: GUMI — up to 30%, Phytosporin-M — up to 1%.

The humus organic improver "Hozyain-Batyushka" was developed as a long-acting soil improver. It is applied during plowing or loosening in spring, summer, and autumn to restore soil structure and increase humus content. The use of this agent not only increases yield, but also improves the quality of the produce, reducing the accumulation of nitrates and heavy metals.

The composition of the "Hozyain-Batyushka" improver includes:

• macronutrients: nitrogen — 12.5%, phosphorus — 2.5–5%, potassium — 0.5–1.5%;
• micronutrients of natural origin: B — 20 mg/kg, Cu — 10 mg/kg, Ni — 10 mg/kg, Fe — 50 mg/kg, Mo — 50 mg/kg;
• bioactive components: natural growth vitamin Gumi — 3%, fermented organic matter — 10%, and also beneficial microflora (more than 50 million live cells and spores).