Ecological Systems and Devices Annotation << Back INFLUENCE OF PREPARATIONS WITH FUNGICIDAL ACTIVITY ON THE ACCUMULATION OF ORGANIC ACIDS AND CARBOHYDRATES IN BLUEBERRY FRUIT (VACCINIUM СORYMBOSUM L.) UNDER THE CONDITIONS OF BELARUS Zh.A. Rupasova, N.B. Krinitskaya, V.S. Zadalia, N.B. Pavlovsky, A.V. Raltsevich, L.V. Goncharova, T.V. Shpitalnaya, P.N. Bely, E.I. Kolomiets, Z.M. Aleshchenkova, M.N. Mandrik-Litvinkovich, V.V. Skorina The results of a comparative study of the effect of preparations with fungicidal activity – chemical Bellis (0.8 kg/ha) and two bacterial ones – Frutin (20 l/ha) permitted in Belarus and tested by the Consortium (20 and 10 l/ha) on the content of dry and pectin substances, free organic, ascorbic and hydroxycinnamic acids, soluble sugars and sugar-acid index in V. сorymbosum fruits. Regardless of the chemical nature of the preparations, a noticeable activation of the saturation of berry products with a complex of the indicated compounds has been established. At the same time, the efficiency of one- and two-time treatments of plants with microbial fungicides, especially by the Consortium, in terms of the totality of the studied indicators, was 2–3 times higher than that of the use of the Bellis chemical fungicide, while their four-time application had a negative effect on this process, the most signifi cant at a dose of the Consortium 10 l/ha. The highest efficiency in the enrichment of blueberry fruits with a complex of organic acids and carbohydrates was established against the background of a double application of the microbial preparation Consortium, which contributed to an increase in their accumulation by 70 % compared with the control. Keywords: tall blueberry, fruits, bacterial and chemical fungicidal preparations, number of treatments, organic acids, soluble sugars, pectins, sugar acid index. DOI: 10.25791/esip.8.2023.1390 Pp. 25-32.