USE OF GROWTH STIMULATORS AND HUMIC SUBSTANCES IN THE PRIMARY SEED PRODUCTION LINK OF BARLEY OF ZNATNYY VARIETY WHEN SOWING IN ONE SPEECH

The study was conducted in 2021-2023 in the forest-steppe zone of the non-chernozem zone of the Central region of the Russian Federation (Ryazan region) in order to assess the effect of plant growth and development regulators (Zircon, Biosil), as well as humic substances (Potassium Humate) on the productivity and biometric indicators of spring barley in the primary seed production link when sowing in one spike. The field laying of the experiment with pre-soaked elite ears was carried out in the nursery for testing 1-year-old progeny (PIP-1). The experimental design included the following options: water (control); Zircon (1 ml/10 l of water); Biosil (1 ml/0.5 l of water); Potassium humate (100 ml/1 l of water). The object of the study is spring barley of Znatnyy variety. The use of the studied preparations, in comparison with the control variant, has a positive effect on the growth and development of plants, which was manifested in an increase in the area of photosynthetic activity of the leaf surface in different phases of crop development and elements of the crop structure. The greatest reliable progressive effect for all the studied structural indicators was provided by the use of Biosil, the growth relative to the control variant was 101.7 ... 111.3%, compared to other experimental variants - 2.7 ... 5.4%. The ear length was 9.8 cm, the number of grains in an ear was 24.9 pcs., the number of productive stems was 108.5 pcs., the tillering coefficient was 3.8, the grain weight per ear was 1.58 g, the weight of 1000 grains was 54.2 g, and the plant height was 67 cm. The Biosil variant showed the highest yield per family – 131.8 g, the highest profitability (45.4%) and conditional net income (13.18 thousand rubles/ha).