Nikishov O. Seed productivity of winter wheat varieties depending on plant protection and micronutrient fertilization in the South Ukraine

Object of study – processes of growth, development and crop formation of winter wheat seeds depending on plant protection and microfertilizers. Aim – improvement of technology for growing seeds of winter wheat varieties depending on plant protection and microfertilizers in the south of Ukraine. Methods – field - to monitor the phases of plant development, determine their biometric indicators, seed productivity, adaptability parameters and crop accounting; laboratory - analysis of plant and soil samples to determine the content of basic nutrients, determine the sowing qualities of seeds and crop structure; statistical - for conducting variance, correlation and regression analyzes of evaluation of research results; calculation and comparison - to establish the economic and energy efficiency of the elements of the technology of growing winter wheat seeds. Results – developed and improved elements of technology for growing seeds of winter wheat varieties of domestic selection, which are recommended for seed farms. It is determined that to obtain high-quality seeds of winter wheat in non-irrigated conditions of southern Ukraine, it is advisable to sow winter wheat variety Konka, apply an integrated plant protection system with the introduction of biologicals Trichodermin and Gaupsin and microfertilizer Avatar, which provides seed yield at 3.9-4 t / ha, net profit over 16 thousand UAH / ha, profitability level 120% and energy factor 2.4. Novelty – for the first time for the conditions of the south of Ukraine the technologies of cultivation of seeds of winter wheat of grades of domestic selection depending on protection of plants and microfertilizers are scientifically substantiated. The scientific value – improved biologized technology for growing winter wheat seeds using microfertilizers. Sector – agriculture.