Effect of microbiological fertilizers on the yield and quality of Echinacea purpurea (L.) Moench. grass.

The aim of the research was to identify patterns in the formation of yield and quality of Echinacea purpurea grass depending on foliar feeding with microbiological fertilizers “Biogor Razvitie” and “Biogor Finish” in different doses and combinations. Field experiments were conducted at the Belgorod branch of the Federal State Budgetary Scientific Institution VILAR. The studies were carried out on Echinacea purpurea crops of the second year of vegetation in accordance with the Item of the FNI program in the Russian Federation on topic FGUU-2025-0006. On average, over three years of research, the highest grass yield was observed in the experimental variants “Biogor Razvitie” at a dose of 2.0 l/ha + + “Biogor Finish” at a dose of 1.0 l/ha, “Biogor Razvitie” at a dose of 2.0 l/ha + “Biogor Finish” at a dose of 2.0 l/ha, “Biogor Razvitie” twice at doses of 2.0 and 1.0 l/ha + “Biogor Finish” at a dose of 1.0 l/ha, “Biogor Razvitie” twice at doses of 2.0 and 1.0 l/ha + “Biogor Finish” at a dose of 2.0 l/ha, amounting to 1.84, 1.87, 1.99 and 2.01 t/ha, respectively, which is higher than the control by 0.80, 0.83, 0.95 and 0.97 t/ha. The best indicator for the sum of phenylpropanoids in terms of chicoric acid in echinacea grass was noted in the experimental variant “Biogor Finish” at a dose of 2.0 l/ha, amounting to 4.23%. Thus, the use of the preparations “Biogor Razvitie” and “Biogor Finish” contributed to the activation of plant growth processes, an increase in the yield and quality of echinacea grass in the conditions of the Belgorod region.