Dobrovolskyi A. The effectiveness of modern growth regulating chemicals for the biologization of the technology of sunflower growing in the southern Steppe of Ukraine

Object of research - processes of growth, development and formation of seed productivity, economically valuable attributes and qualitative indicators of sunflower harvest, depending on the norm of mineral fertilizers and retrograde polyfunctional drugs. The purpose of the research is to study the direct influence of fertilizers and polyfunctional drugs on the productivity of sunflower and to search for synergistic effects of these factors in the case of their combination in the crop care unit of the culture technology. Methods of research - historical retrospective; field short-term, two-factor experiment; laboratory; calculated; statistical; calculation-constructive, forecasting and modeling. Research results - For the theory: For the first time, the scientific and practical principles of introducing into the technology of sunflower cultivation of modern domestic preparation Helafit® have been developed, which will significantly improve the utilization of microorganisms, mineral fertilizers by plants. For the practice: Improvement of processes related to the formation of seed productivity of sunflower plants in hard conditions under the hydrothermal coefficient of the conditions of the southern Steppe, therefore the results of these studies are of practical interest for almost all without exception of agricultural enterprises in the region. The sphere of use is agricultural enterprises of the south of Ukraine.