Influence of the application of UAN-32 and solid nitrogen and complex fertilizers on the yield and quality of oil flax seeds

Abstract

In the course of two years of research, the effect of application of liquid nitrogen fertilizer UAN-32, ammophos and diammophos, as well as their combined use, pre-sowing application of solid nitrogen fertilizers - ammonium nitrate and ammonium sulfate - was studied. Studies have shown that under conditions of unstable moisture supply, pre-sowing and starter application of these fertilizers in combination with N69P26 provides a yield of 17.3 c/ha (54.4% increase) N42P42 - 14.1 c/ha (30.5% increase) and N59P42 - 14.8 c/ha (37% increase). The application of UAN-32 at a dose of 150 l/ha with a high supply of soils with phosphorus and potassium increases the yield by 35.7 (15.2 c/ha). The introduction of UAN-32 at a dose of 150 l/ha, against the background of a high soil supply with phosphorus and potassium, increases the yield by 35.7 (15.2 c/ha). The oil yield for these variants increased from 4.6 - 4.61 c/ha to 7.54; 6.1 and 6.51 c/ha, and protein from 2.8-1.77 c/ha to 4.35 and 2.29-2.71 c/ha. Combinations of UAN-32 with ammophos and diammophos contribute to the formation of a higher oil content in seeds, and an increase in the nitrogen dose increases the protein content and yield.