Effect of topdressing with nitrogen, manganese and zinc on Echinacea purpurea yield and on the content of biologically active substances in it

摘要

Results of studying the effect of nitrogen and microelements on yield and quality of raw materials of Echinacea purpurea Moench. (I) are presented. Raw materials are used for producing preparations of immunostimulating effect. It is shown that leaf spray dressings with urea solutions, MnSO_4 and ZnSO_4 increase productivity of the crop and output of bioligically active compounds. All raw materials of Echinacea the amount of derivaties of oxycinnamon acids is determined in conversion to chicory acid.