Evaluation of the effectiveness of a new organomineral fertilizer in the cultivation of narrow-leaved blueberry (Vaccinium angustifolium ait.)

The article is devoted to the study of the effectiveness of the use of a new granular organo-mineral fertilizer (OMU) for the cultivation of narrow-leaved blueberries (Vaccinium angustifolium Ait.). The object of the study was narrow-leaved blueberry plants obtained by clonal micropropagation. The composition of organomineral fertilizer developed by us differs from those available on the market by a more balanced ratio of macro- and microelements (NPK 8:8:8, Fe - 0.5 %, Zn - 0.2 %, Cu - 0.4 %), the presence of biohumate and spore forms of bacteria Bacillus subtillis H-13 and B. mucilaginosus, Azotobakter chroococcum (as part of preparations Bisolbiphite, Phosphatovite and Azotovite). The use of a new granular organomineral fertilizer made it possible to obtain the highest yield of blueberry fruits 190.2 g/bush, which is significantly higher compared to the options with mineral fertilizers by 26.7-30.0 g/bush. The collection of dry matter and sugar increased by 3,14-4.36 g/bush and 4.63-4.85 g/bush, respectively, and amounted to. The content of vitamin C in berries has not changed much. The use of a new granular organomineral fertilizer in the technology of growing narrow-leaved blueberries contributes to the optimal provision of plants with the necessary macro- and microelements throughout the growing season and has a positive effect on its productivit.