Investigation of the Use of Organic Additives to Improve the Fertile Properties of Soil After Screening

The possibility of using soil passed through a screen to create a fertile layer on disturbed areas is considered. These soils may be contaminated with various toxic substances. Joint use of chemical-analytical methods and biotest systems with the test-cultures from different systematic groups allow to increase the reliability of studies to assess the quality of soil. So the degree of its ecotoxicity was determined and the soil hazard class was established. This approach to soil quality assessment can be recommended for environmental quality control purposes. In laboratory vegetation experiment, the possibility of restoration of soil ecological properties after screening and the possibility of increasing its fertility with promising ameliorants such as manure, biohumus and peat were considered. In experiment the plant biomass of lawn grasses was taken into account, which serves as an integral indicator of vegetation productivity in assessing the physiological state of plants. The possibility of using the increase in soil fertility in the creation of a fertile layer in the areas of disturbed lands was established. The results of this research can be used in the development of technical specifications for the production of nutritious soil.