Changes in the physical and chemical properties of typical chernozem soil during intensive agriculture in Forest-Steppe agrolandscapes

Aim. To study the peculiarities of changes in the physicochemical properties of chernozem soil during intensive farming in the agrolandscapes of the Forest-Steppe. Methods. Field experiment, laboratory, analytical, mathematical-statistical, calculation-comparative. Results. The scientific justification of agrotechnological measures to preserve the potential and increase the effective fertility of typical chernozem under the conditions of application of tillage and mineral fertilizer systems is presented. An analysis of the dynamics of physico-chemical properties under the influence of the use of no-till technology, shallow disk cultivation, plowing with the use of various mineral fertilizers for the cultivation of sunflower and corn for grain was carried out. The impact of cultivation systems and mineral fertilization on changes in physicochemical properties is highlighted, the dynamics of humus content is analyzed, the optimal parameters of its reserves are determined, and the methods of achieving a stably high level of different mineral fertilizers using no-till technology, disking and plowing. Conclusions. On the basis of research, the main key questions regarding the regulation of physico-chemical properties indicators for tillage and mineral fertilization systems were considered, and the effectiveness of the use of no-till technology, shallow disc tillage was proven, and the effectiveness of plowing under long-term intensive mineral load for the cultivation of sunflower and corn was substantiated on grain. The yields of sunflower and corn per grain are given on chernozem typical of intensive farming. The types and forms of manifestation, factors of reproduction and regulation of the potential and increase of effective fertility of black soil are highlighted. A set of agrotechnological measures aimed at preventing the degradation of arable black soils and protecting their fertility in agrocenoses under various agrotechnologies of growing agricultural crops is substantiated.