Thanks to the process of nutrition (both foliar and root), the plant forms its structural elements and, with well-balanced nutrition, rapidly increases its biomass.
The life of a plant organism is based on a wide variety of metabolic reactions both with the external environment and within the cell, as well as between cells and different organs. A balanced supply of individual chemical elements ensures the sequence and coordination of all biological reactions and physiological functions of the organism. The main process through which organic substances are formed in plants is photosynthesis, although plants can also absorb small amounts of amino acids, growth substances, vitamins, antibiotics, and CO₂ from the environment.
Fig. 1. Sequence of nutrient uptake by plant roots.
The intensity of mineral nutrient absorption depends not only on the biological characteristics of the plant and environmental conditions (availability of nutrients in accessible form and sufficient quantity in the soil solution, proper temperature, soil aeration, etc.), but also on the amount of energy and organic substances produced during photosynthesis.
The main amount of nitrogen, water, and ash elements enters the plant from the soil through the root system.
Soils are rich in macro- and microelements due to their mineral origin, but most of them are not available to plants.
Nutrient availability is influenced by many factors: presence of nutrients in the soil solution, pH, soil buffering capacity, microorganisms, and temperature conditions.
At acidic pH levels, Al³⁺ ions are released from the soil absorption complex, which at high concentrations exhibit strong phytotoxic properties and lead to plant suppression and death. Low pH also negatively affects soil microorganisms. For example, legumes may fail to form symbiosis with nodule bacteria. Neutral conditions are optimal for plant development. In a neutral environment, nutrient reactivity decreases, and most elements (N, P, K, Co, Mo, Ca, Mg, S, B) are better absorbed. Antagonism is minimized and synergism is enhanced. Soil microflora develops well. Alkaline pH (above 7) hinders the absorption of phosphorus, manganese, zinc, and other micronutrients due to the formation of insoluble compounds. Alkaline soils are often saline, structureless, and may cause waterlogging or crust formation.
The presence of available phosphorus in soil is directly related to the solubility of phosphorus-containing compounds. Plants absorb phosphate ions from the soil solution. The amount of available phosphorus depends on its solubility coefficient, while replenishment depends on phosphate solubility. At pH 5.5 or lower, phosphorus becomes fixed by aluminum and iron ions and turns into unavailable forms. At pH above 7, phosphorus is fixed by calcium forming tricalcium phosphate (a process called retrogradation). Calcium phosphates are poorly available to plants; only a few crops (lupine, peas, buckwheat, sainfoin) can absorb them through acidic root exudates. In soils rich in organic matter and active microbiota, phosphorus uptake efficiency from fertilizers is higher. Humic substances stimulate plant activity, enhance biological cycles, and increase root exudation. These exudates contain organic acids that dissolve poorly available phosphates. Roots also release phosphatase enzymes that separate phosphorus from organic compounds, enhancing mineralization.
Fig. 2. Dynamics of increase in mobile forms of essential nutrients.
“Black Pearl” helps optimize soil pH, improves soil structure, retains moisture, significantly enhances microbiological activity, converts unavailable nutrients into available forms, and increases plant resistance to drought and soil salinity.
Potassium in soil exists in fixed and mobile forms. Fixed potassium is part of stable, poorly soluble minerals such as muscovite, biotite, and feldspar (unavailable form). However, under sufficient moisture and carbonic acid concentration, potassium becomes available. Exchangeable potassium absorbed by soil colloids is the most accessible form. Its availability is due to its ability to easily transition into solution during cation exchange. As plants absorb potassium from solution, new portions move from the absorbed state into the soil solution. Over time, this process slows, and residual potassium becomes more tightly bound. Exchangeable potassium content indicates soil potassium availability.
It is important to consider nutrient removal with harvests, which is often higher than the amount of available nutrients in soil. To maintain balance, nutrients must be replenished in scientifically justified amounts. For winter wheat, producing 1 ton of grain requires 20–40 kg nitrogen, 11–15 kg phosphorus, 20–30 kg potassium, 5–7 kg sulfur, 1–2 kg calcium, and 0.8–1 kg magnesium. Plants rely on soil reserves and fertilizers. Foliar feeding cannot compensate for significant deficiencies of potassium and phosphorus due to limited absorption capacity. To improve fertilizer availability, the organo-mineral fertilizer “Black Pearl” is used. It stimulates beneficial microflora, improves soil structure and moisture retention, and supports buffering capacity.
After fertilizers enter the soil, exchange reactions occur with the soil absorption complex. However, not all applied fertilizer is utilized by plants. There are physiologically acidic and alkaline fertilizers. If a plant absorbs a cation first, the fertilizer is physiologically acidic; if an anion, it is alkaline. Improper application can acidify or alkalize soil, negatively affecting plants.
Soil reaction can be adjusted through chemical amelioration (gypsum, lime). Calcium and magnesium ions displace hydrogen, aluminum, and manganese ions, forming alkaline salts. However, amelioration is a drastic measure that can negatively affect biological processes and soil structure. To maintain neutral pH and buffering capacity, organic fertilizers are recommended.
The “Black Pearl” fertilizer line is based entirely on plant raw materials. Its organic component includes humates, fulvates, and humic acids. These compounds improve soil structure, nutrient uptake, buffering capacity, and act as mild soil conditioners. They stimulate beneficial microflora and fungi that produce antibiotics against root diseases and pests. “Black Pearl” also reduces pesticide stress and enhances plant immunity. It contains boron and silicon, which stimulate nutrient uptake, enhance photosynthesis, and improve sugar transport to roots, supporting rhizosphere microbiota. Root acid secretion increases, improving nutrient availability. As a result, nutrient uptake rises. Boron supports reproductive development, pollination, and fertilization, while silicon strengthens vascular tissues and enhances plant immunity.
Thanks to the process of nutrition (both foliar and root), the plant forms its structural elements and, with well-balanced nutrition, rapidly increases its biomass.
The life of a plant organism is based on a wide variety of metabolic reactions both with the external environment and within the cell, as well as between cells and different organs. A balanced supply of individual chemical elements ensures the sequence and coordination of all biological reactions and physiological functions of the organism. The main process through which organic substances are formed in plants is photosynthesis, although plants can also absorb small amounts of amino acids, growth substances, vitamins, antibiotics, and CO₂ from the environment.
Fig. 1. Sequence of nutrient uptake by plant roots.
The intensity of mineral nutrient absorption depends not only on the biological characteristics of the plant and environmental conditions (availability of nutrients in accessible form and sufficient quantity in the soil solution, proper temperature, soil aeration, etc.), but also on the amount of energy and organic substances produced during photosynthesis.
The main amount of nitrogen, water, and ash elements enters the plant from the soil through the root system.
Soils are rich in macro- and microelements due to their mineral origin, but most of them are not available to plants.
Nutrient availability is influenced by many factors: presence of nutrients in the soil solution, pH, soil buffering capacity, microorganisms, and temperature conditions.
At acidic pH levels, Al³⁺ ions are released from the soil absorption complex, which at high concentrations exhibit strong phytotoxic properties and lead to plant suppression and death. Low pH also negatively affects soil microorganisms. For example, legumes may fail to form symbiosis with nodule bacteria. Neutral conditions are optimal for plant development. In a neutral environment, nutrient reactivity decreases, and most elements (N, P, K, Co, Mo, Ca, Mg, S, B) are better absorbed. Antagonism is minimized and synergism is enhanced. Soil microflora develops well. Alkaline pH (above 7) hinders the absorption of phosphorus, manganese, zinc, and other micronutrients due to the formation of insoluble compounds. Alkaline soils are often saline, structureless, and may cause waterlogging or crust formation.
The presence of available phosphorus in soil is directly related to the solubility of phosphorus-containing compounds. Plants absorb phosphate ions from the soil solution. The amount of available phosphorus depends on its solubility coefficient, while replenishment depends on phosphate solubility. At pH 5.5 or lower, phosphorus becomes fixed by aluminum and iron ions and turns into unavailable forms. At pH above 7, phosphorus is fixed by calcium forming tricalcium phosphate (a process called retrogradation). Calcium phosphates are poorly available to plants; only a few crops (lupine, peas, buckwheat, sainfoin) can absorb them through acidic root exudates. In soils rich in organic matter and active microbiota, phosphorus uptake efficiency from fertilizers is higher. Humic substances stimulate plant activity, enhance biological cycles, and increase root exudation. These exudates contain organic acids that dissolve poorly available phosphates. Roots also release phosphatase enzymes that separate phosphorus from organic compounds, enhancing mineralization.
Fig. 2. Dynamics of increase in mobile forms of essential nutrients.
“Black Pearl” helps optimize soil pH, improves soil structure, retains moisture, significantly enhances microbiological activity, converts unavailable nutrients into available forms, and increases plant resistance to drought and soil salinity.
Potassium in soil exists in fixed and mobile forms. Fixed potassium is part of stable, poorly soluble minerals such as muscovite, biotite, and feldspar (unavailable form). However, under sufficient moisture and carbonic acid concentration, potassium becomes available. Exchangeable potassium absorbed by soil colloids is the most accessible form. Its availability is due to its ability to easily transition into solution during cation exchange. As plants absorb potassium from solution, new portions move from the absorbed state into the soil solution. Over time, this process slows, and residual potassium becomes more tightly bound. Exchangeable potassium content indicates soil potassium availability.
It is important to consider nutrient removal with harvests, which is often higher than the amount of available nutrients in soil. To maintain balance, nutrients must be replenished in scientifically justified amounts. For winter wheat, producing 1 ton of grain requires 20–40 kg nitrogen, 11–15 kg phosphorus, 20–30 kg potassium, 5–7 kg sulfur, 1–2 kg calcium, and 0.8–1 kg magnesium. Plants rely on soil reserves and fertilizers. Foliar feeding cannot compensate for significant deficiencies of potassium and phosphorus due to limited absorption capacity. To improve fertilizer availability, the organo-mineral fertilizer “Black Pearl” is used. It stimulates beneficial microflora, improves soil structure and moisture retention, and supports buffering capacity.
After fertilizers enter the soil, exchange reactions occur with the soil absorption complex. However, not all applied fertilizer is utilized by plants. There are physiologically acidic and alkaline fertilizers. If a plant absorbs a cation first, the fertilizer is physiologically acidic; if an anion, it is alkaline. Improper application can acidify or alkalize soil, negatively affecting plants.
Soil reaction can be adjusted through chemical amelioration (gypsum, lime). Calcium and magnesium ions displace hydrogen, aluminum, and manganese ions, forming alkaline salts. However, amelioration is a drastic measure that can negatively affect biological processes and soil structure. To maintain neutral pH and buffering capacity, organic fertilizers are recommended.
The “Black Pearl” fertilizer line is based entirely on plant raw materials. Its organic component includes humates, fulvates, and humic acids. These compounds improve soil structure, nutrient uptake, buffering capacity, and act as mild soil conditioners. They stimulate beneficial microflora and fungi that produce antibiotics against root diseases and pests. “Black Pearl” also reduces pesticide stress and enhances plant immunity. It contains boron and silicon, which stimulate nutrient uptake, enhance photosynthesis, and improve sugar transport to roots, supporting rhizosphere microbiota. Root acid secretion increases, improving nutrient availability. As a result, nutrient uptake rises. Boron supports reproductive development, pollination, and fertilization, while silicon strengthens vascular tissues and enhances plant immunity.