Interrelationship Analysis of Agrochemical Properties of Southern Chernozem in Northern Kazakhstan
Kekilbayeva G. Kassipkhan A. Mikhailov D. Shoiynbaeva A. Nazarova A. Zvyagin G. Orynbayeva B.
January-February 2026Unique Scientific Publishers
International Journal of Agriculture and Biosciences
2026#15Issue 1333 - 342 pp.
The article is devoted to the study of the interrelationships between the structural characteristics of the soil, agrochemical regime and elemental composition. The object of the study was two variants: control (C0) and fertilized (P20). It has been established that the application of fertilizers helps to stabilize the granulometric composition, increase the content of humus and total nitrogen, as well as reduce electrical conductivity in the lower horizons. In the southern chernozems of the Akmola region of Northern Kazakhstan, where over the past 16 years’ experience has been conducted using traditional technology for the region, two soil sections were laid and their morphological description was performed. The interrelations between the granulometric composition of the soil, the content of humus, nitrogen, electrical conductivity and the main cations (Ca2⁺, Mg2⁺, Na⁺, K⁺) in the upper horizons have been studied. Correlation, regression, and variance analysis was performed for two experimental variants (C0 and P20). The results showed that the nitrogen content is closely related to humus (r = 0.91), and the electrical conductivity is related to the number of cations (r = 0.88). Regression models explained more than 80% of the variation in nitrogen content and 77% of the changes in electrical conductivity. The analysis of variance revealed statistically significant differences between the C0 and P20 variants in key indicators. The results obtained confirm the influence of granulometric composition and fertilizers on soil fertility. The results demonstrate that fertilization ensures a more uniform distribution of exchange cations and prevents the accumulation of salts in the lower part of the profile, increasing the agrochemical stability of the soil.
Cations , Correlation analysis , Electrical conductivity , Fertilizers , Granulometric composition of soils , Humus , Nitrogen
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S. Seifullin Kazakh Agrotechnical Research University, Astana, Kazakhstan
Agroecological Testing Center (laboratory), Astana, Kazakhstan
S. Seifullin Kazakh Agrotechnical Research University
Agroecological Testing Center (laboratory)
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