EFFECT OF BIOLOGICAL PLANT PROTECTION PRODUCTS ON THE PHYTOPATHOGENIC COMPLEX OF SPRING WHEAT SEEDS

Abstract

The article presents the results of a study evaluating the efficacy of pre-sowing treatment of spring wheat seeds of the cultivar Krasnoyarskaya 12 with biological products (BPs) in 2025-2026. The following products were tested: Bio-Trichoderma at 0.5 g per 100 mL of water, Tsitovit at 0.75 mL per 100 mL of water, and a combined treatment consisting of preliminary seed soaking in a Tsitovit nutrient solution (0.75 mL per 100 mL of water) followed by Bio-Trichoderma (0.5 g per 100 mL of water). Pre-sowing treatment with the biological products increased laboratory seed germination by 15-21 % compared with the untreated control, with Bio-Trichoderma treatment resulting in the highest germination rate of 88.5 %. Across the study years, the proportion of infected seeds in the untreated control averaged 58-72 %. Treatment with Tsitovit reduced the proportion of infected seeds by 9-15 %, whereas the combined treatment reduced infection by 3.5-22 %. Bio-Trichoderma demonstrated the highest efficacy, reducing the proportion of infected seeds by 14.5-35 %. The tested biological products demonstrated high efficacy against phytopathogens, reducing the level of infection in spring wheat seeds and confirming their potential for use in spring wheat seed protection.