Kozlova O. Sunflower productivity when applying biologicals and growth promoters in cultivation technology in the Southern Ukraine

The object of research is the process of scientific substantiation of technological measures of formation of yield and quality of seeds of sunflower hybrids in the conditions of the South of Ukraine. The purpose of the research is to determine the effectiveness of biological products in their application in pure form and in combination of biofungicide - biostimulator in different terms on crops of different sunflower hybrids. Research methods - field; vegetative; laboratory; settlement and comparative; statistical. Research Results - For Theory: For the first time, the combined use of biofungicides with stimulants has been found to enhance the yield and quality of sunflower hybrids irrespective of environmental conditions; the concept of architectonics of sowing of sunflower hybrids is scientifically substantiated, which includes a tier of arrangement of leaves, illumination of various tiers by a stem, volumetric mass of sowing and ratio of vegetative and generative organs. For practice: The use of biological products according to the developed recommendations makes it possible to increase the productivity of sunflower by 22-27% at a yield of 3.75-3.89 t / ha with rather low material costs. Scope - agricultural enterprises of southern Ukraine.