STUDY OF AGROCHEMICAL PROPERTIES OF COASTAL SOILSOF THE KARATOMAR RESERVOIR: AGROCHEMICAL ANALYSIS AND CONCLUSIONS

Abstract

The assessment of the main agrochemical indicators of the quality of agricultural soils adjacent to the Karatomar reservoir, such as pH, humus, mobile and total phosphorus and potassium, nitrogen, nitrates, mobile sulfur, heavy metals, was carried out. The determination of agrochemical indicators of soils was carried out in accordance with the regulatory requirements and standards of the Republic of Kazakhstan and state and foreign scientific recommendations; the research work was carried out from autumn 2023 to winter 2024. It has been established that the agricultural soils adjacent to the Karatomar reservoir are characterized by an alkaline environment with a pH above 7.0, which significantly affects the absorption of nutrients by plants. The humus content is at a moderate level; however, the low levels of nitrogen in nitrate form and available phosphorus indicate potential limitations for photosynthesis and overall plant viability. The high concentration of available potassium contributes to plant stress resistance.
The analysis of heavy metal content showed that overall levels comply with standards, but the identified exceedance of cadmium levels requires attention when developing measures to improve soil quality and ensure the environmental safety of the region.