Abstract:

When the elements nitrogen, phosphorus, potassium, which are considered macronutrients, are replenished by adding mineral fertilizers to plants, it is not possible to meet the demand for plants due to the lack of production of micronutrients. Despite the great importance of micronutrients in the life of plants, micronutrients are almost not produced in the country. The following are the reasons that delay the production of micronutrient fertilizers. Cheap and usable copper, zinc, cobalt, nickel, molybdenum, manganese, barium and other micronutrient raw materials are not fully studied, lack of annual data on the mobile forms of trace elements in the soil, insufficient scientific and technological developments, Insufficient recommendations on the rational application of micronutrients in the soil and information on the status of micronutrients in the production of complex fertilizers. Fertilizers based on Central Kyzylkum phosphorites meet 25-30% of agricultural demand for phosphorus fertilizers. Due to the lack of micronutrients, plants suffer from various diseases. As a result, the absorption of 25-30% of the phosphorus nutrient or other nutrients used by plants is reduced and the nutrients remain in the soil. Therefore, a decrease in productivity is observed in plants. At a time when the demand for phosphorus fertilizers in the country is high, their waste is one of the factors delaying the development of agriculture in our country. Along with nitrogen, phosphorus and potassium fertilizers, the demand for micronutrient fertilizers is growing in the country. At present, micronutrients are used in very small quantities in practice. Various wastes and products of non-ferrous metallurgy, which contain trace elements in the production of mineral fertilizers, the use of sour effluents, depleted catalysts and other types of by-products is one of the solutions for the production of micronutrient fertilizers.

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