Highly productive oil flax sowings in the Middle Urals

The purpose of our research was to reveal the patterns of change in the oil flax yield during a long period of study, to justify its value by structure indicators, to determine the optimal parameters of highly productive sowings of oil flax in the Middle Urals. We conducted our research on the dark-gray forest soil of the Middle Urals in 2012-2018. A research method was a field experiment with variance analysis of experimental data. Agrometeorological conditions of vegetative periods during the years of research had a significant impact on the length of the vegetative period of oil flax, the average duration of which for early ripening varieties Severny and Uralsky was 98-99 days, for later variety LM 98 it was 10 days longer. On average over 7 research years, seed yield of oil flax varieties was from 1.91 to 2.15 t per ha. Such yield is obtained in the traditional areas of oil flax cultivation - in the south of the Russian Federation. The variability of the main elements of the yield structure is shown...