Intensity of biological accumulation of microelements (zinc and copper) plants of Echinacea purpurea L. under conditions of Western Siberia

Relevance. To compensate for the lack of nutrient reserves available for plants, the introduction of macro and micronutrient fertilizers is required. Since microelements have the ability to migrate in the soil - plant system, it is necessary not only to control their content in these systems, but also to determine the biological accumulation of plants, including medicinal ones, taking into account specific zonal features of the territory. Thus, the aim of the work was to study the intensity of the biological accumulation of zinc and copper by Echinacea purpurea in Western Siberia. Materials and methods. Field experiments were conducted in the period 2016-2018 on meadow chernozem soil of the southern forest-steppe of the Omsk region. A valuable medicinal crop, Echinacea purpurea, was chosen as the object of study. Copper and zinc fertilizers in acetate forms were applied in the background (N125). In soil and plant samples, the content of mobile forms of Zn and Cu was determined by the atomic absorption method...