THE EFFECT OF NEAR-SOWING APPLICATION OF MINERAL FERTILIZERS ON THE CHEMICAL COMPOSITION AND SEEDS OF OILSEED FLAX ON LEACHED CHERNOZEM

The study was conducted in order to study the effect of near-sowing application of mineral fertilizers on the chemical composition and seeds of oilseed flax on leached chernozem. The research was carried out from 2021 to 2023 at the Stavropol State Agrarian University training and experimental station located in the zone of unstable humidification. The experiment considered the backgrounds (factor A): control (without fertilizers), the dose of N60P70K40 (applied for basic tillage) and the doses of mineral fertilizers applied during sowing, aligned with phosphorus (factor B): control (without fertilizers), N4P16, N16P16K16, N7P32, N32P32K32. The early-ripening oilseed flax variety VNIIMK 620 was studied. As a result of the conducted studies, over an average of three years, the background with the use of mineral fertilizers N60P70K40 showed the highest levels of nitrogen, phosphorus and potassium in oilseed flax plants, relative to the control (+0,23%; +0,06%; +0,11% respectively). The maximum productivity of oilseed flax of 2.02 t/ha was formed using the N60P70K40 variant for basic tillage and N32P32K32 for sowing.