“…One of main growing techniques for winter ear crops, especially wheat and barley, is correct choice of sowing dates. Sowing is the first and most responsible period in cultivation of a particular crop, which largely determines the time and completeness of seedling shootings, further growth and development of plants in autumn vegetation season, continuation of hardening phases, frost and winter resistance, resistance to other stress phenomena, diseases, pests, weeds, which are determining factors at the final stage for obtaining high yields of winter crops, especially winter wheat [Dhakal et al, 2020;Yakupoglu et al, 2021;Karbivska et al, 2022a]. According to the results of studies carried out by scientific research institutions of Ukraine, deviation of sowing dates from the optimal ones by 15-20 days leads to a decrease in productivity by 15-45% due to receiving overgrown, thickened or weak non-tillered plants at the period of ending autumn vegetation.…”