Nutritional value and productivity of perennial grasses used in animal feeding when creating cultural phytocenoses

Abstract

The natural and technological properties of land and the conditions of the territory are determined by landforms, the contour of the fields and their fragmentation, and a number of other indicators related to the geographical conditions of the area. Their influence on agricultural activity and production is manifested directly through the features of the soil cover. Long-term studies carried out by employees of the Kursk Agricultural Academy have shown that the problem of restoring disturbed lands in the Kursk magnetic anomaly region can be successfully solved. One of the promising areas for the development of disturbed lands is the cultivation of perennial grasses directly on overburden. In the experiments, chalk, sands, soil mixtures, silts of the Jurassic, rocks of the Devonian system were used as a substrate for growing perennial herbs. In terms of chemical composition, these rocks are non-toxic and non-saline, at the same time they are poor in organic matter (0.1–0.4%) and mobile nutrients. The mechanical composition (except chalk) is light. Overburden rocks are characterized by increased bulk density (1.50-2.02 g/cm3 and solid phase density (2.70–2.86 g/m3). According to the four-membered classification of A M Burykin, the studied rocks are conditionally suitable and should be used for afforestation and tinning.