Influence of agricultural technology elements on linseed yield formation

Abstract

Flax (Linum usitatissimum) is a key raw material for the fat-and-oil, pharmaceutical, and other industries of the Russian national economy. The Altai Region ranks first in Russia in terms of the areas under flax accounting for 13-14% of the country's total production. The key factors determining crop productivity include the correct selection of adapted varieties, optimal sowing dates, and the development of efficient starter fertilizer rates. The research goal was comprehensively assessment of the impact of different starter fertilizer rates on plant development, the formation of reproductive organs, and the final yield of flax varieties. The field experiments to study the impact of starter fertilizer rates on the productivity of flax varieties were conducted in the forest-steppe of the Altai Region’s Ob River area in 2024 and 2025. Four linseed varieties were the research targets: Biryuza, Severnyy, Danik, and Avgust. The subjects of the study were ammonium nitrate (N 34.4%), ammonium phosphate (N 12%, P 52%), and compound NPK fertilizer (diammophoska) (N 10%, P 26%, K 26%). The analysis of the obtained data revealed significant variability of seed productivity depending on both the genotype and the background of mineral nutrition. The Avgust variety demonstrated the highest productivity potential. The average yield in all experimental variants for this variety amounted to 1.656 t ha which exceeds the performance of other varieties. The maximum yield in the experiment (1.753 t ha) was recorded for the Avgust variety with the application of ammonium phosphate (40 kg ha).