The results of a three-year cycle of studying the influence of intermediate green manure using oil radish on the formation of basic indicators of the structure of gray forest soil in comparison with the control without green manure are presented. Based on the assessment of the hydrothermal regime in July-October, the possibility of using oil radish for an intermediate summer green manure variant was analyzed, and both the productivity of the formation of its leaf-stem mass and the general morphological development of the root system of plants, which is one of the main criteria for effective green manure establishment in terms of optimizing the granulometric composition of the soil profile or its root part, were additionally assessed. The use of two software packages FijiImageJ2 and BaseGrain for visualization of experimental data and formation of a morphometric database of indicators based on the analysis of soil images from different variants was adapted to assess the main and additional parameters of soil structural state. The results of visualization of the 3D soil profile display system are presented, taking into account different variants of the experiment, and the possibility of their use in the application to the study of soil properties and features of the formation of its modes based on a complex of properties is assessed. Non-traditional indicators (degree of soil crushing Dc and coefficient of structural aggregates diversity (GSd) were used for an in-depth study of the applied green manure variant in comparison with the control based on the averaging of their size and the use of percentage threshold analysis in view of the recommended optimal intervals of the ratio of individual fractions of soil particles in their total. The intervals of variation of the morphometry of soil aggregates under different technological options for pre-sowing soil use were determined. The obtained results were evaluated from the point of view of the influence of intermediate green manure on such indicators as optimization of soil cultivation conditions, improvement of its agronomically valuable structure, change in the dynamics of fractional composition, etc. The effectiveness of intermediate green manure application in summer intermediate sowings of oil radish was proved by increasing the coefficient of soil structure (Ks) while reducing the coefficient of soil structural aggregates diversity (GSd) and the overall variation of their size (by the coefficient of variation Cv).