Influence of weather conditions on the prevalence of fusarium wilting in crops of oil flax

We studied the prevalence and degree of Fusarium wilting in oil flax crops depending on the weather conditions of the central climatic zone of the Krasnodar region and a set of cultivated varieties at the fields of the .S. Pustovoit All-Russian Research Institute of Oil Crops, Krasnodar, in 2015-2017. Flax varieties VNIIMK 620, Raduga, Severny and Nilin were used as an object of the research. Planting was carried out with a SN-16 seeder in the optimal date (first ten-days of April), with a seeding rate of 8 million seed per ha. The sowing area of the plot was 15 sq. m, in four replications. We accounted the prevalence and degree of fusarium development according to the guidelines of the All-Russian Institute of Plant Protection by a four-point scale. Weather conditions of the growing season of oil flax (April-July) in the years of research were favorable for the crop: the absence of soil moisture deficiency before sowing and high average daily temperatures promoted the timely germination of flax seed, which reduced the probability to be infected by Fusarium in the early stages of development...