Abstract
Goal. To study the distribution of values of magnetic susceptibility (MS) of soils of agricultural lands of the chernozem zone of the Left Bank of Ukraine and to evaluate their informativeness for control of organic carbon (Corg) of soils at the regional level. Methods. Methods of soil sampling according to DSTU 4287:2004 were used and the humus content was determined according to DSTU 4289:2004. The standard software product Statistica® was used to establish the statistical indicators, and the results of the research were visualized in the environment of MapInfo and Surfer. Results. 90 samples were taken from the upper soil horizon (0–30 cm) of lands of different types (arable land, pastures, forest), their ratio roughly corresponded to the current structure of agricultural lands. For all samples, the specific MS was determined using a kappa-containing KLY2 according to the Evans method. Conclusions. The degree of relationship between the content of sorghum in the soils of the study area did not allow making unambiguous recommendations for the use of MS by interpolation or extrapolation of values at the regional level. This is due to differences in pedogenesis and soil use. The scattering graph of MS and Corg can identify areas that meet different conditions of soil formation: steppe, meadow, gray forest. They did not find regularities in the spatial distribution of soil MS (except for the growth of values with increasing hydrothermal coefficient) and Corg content.
Highlights
IntroductionThe role of agricultural science in this its preservation, protection and rational use
The issue of preserving soil fertility is the basis of human food security
Due to the high content of organic carbon fly in the upper humus horizon chernozems are characterized by the highest the value of magnetic susceptibility (MS) compared to cambisols and wet soils [8]
Summary
The role of agricultural science in this its preservation, protection and rational use This is due to the need for continuous monitoring of soil conditions. One of the most studied properties of the soil cover at present is its magnetic susceptibility (MS) It differs from other characteristics by the efficiency of determination and low cost of measurements. Due to the high content of organic carbon fly in the upper humus horizon chernozems are characterized by the highest the value of MS compared to cambisols and wet soils [8]. The purpose of the work is to study the distribution of MS values of agricultural soils of the agricultural land of the chernozem zone of the Left Bank of Ukraine and to assess their informativeness for the control of soil organic carbon at the regional level. If the first works on pedomagnetism considered the differences between the MS of soil-forming rocks and humus horizons of soils, the logical step was their differentiation by organic matter content [12, 13]
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