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.
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