. The effect of biopreparation for plant protection and growth regulation on bioflavonoid complex of Vaccinium сorymbosum L. (highbush blueberry) in the conditions of Belarus

The results of a comparative study of the composition of the P-vitamin complex of tall blueberry fruits are presented depending on the treatments of the experimental crop with biological growth regulators Oxidate torpha with trace elements and Rostmoment (each in a concentration of 0.4 %), as well as various concentrations (1, 2 and 5 %) of a new bacterial preparation of fungicidal action Ecoberit. Oxidate torpha had the most pronounced stimulating effect on the biosynthesis of anthocyanins, catechins and the total yield of bioflavonoids. Ecoberit at a concentration of 5 % mainly stimulated the formation of catechins, at a concentration of 2 % – flavonols, and at a concentration of 1 % it inhibited the synthesis of leukoanthocyanins, anthocyanins proper, but at the same time had a stimulating effect on the formation of catechins and flavonols. The use of Rostmoment reduced the synthesis of leukoanthocyanins, anthocyanin pigments and catechins, which generally led to fruit depletion with bioflavonoids. The maximum efficiency of enriching blueberry berry products with P-vitamins is achieved by treating plants with Oxidate torpha in concentration 0,4 % and Ecoberit in concentrations of 2 and 5 %.