Effectiveness of biofertilizers and growth promoters in spring wheat growing on quasi-gley agrochernozem

Abstract

The experimental data on the effectiveness of the application of biofertilizers and growth promoters to increase the yields of spring wheat Stolypinskaya 2 in the forest-steppe of the south of West Siberia are discussed. The experiment was carried out in the experimental field of the Omsk State Agricultural University in 2021 and 2022 on quasi-gley agrochernozem. The following was applied: biofertilizers Azotovit and Fosfatovit, and growth promoters Biostim Start and Gumat K. It was found that all studied products significantly increased the yields of spring wheat grain. In the variants with the use of biological products, two-year average yields made 3.67-3.86 t ha; the yield without any biological product application being 3.36 t ha. The application of growth promoters Biostim Start and Gumat K, the combinations of Azotovit + Fosfatovit and Azotovit + Fosfatovit + Gumat K ensured the greatest yield gains that amounted to 0.45; 0.44, 0.50 and 0.46 t ha, respectively. Thousand-kernel weight in the harvest of the control variant made 38.7 g; while with the application of biofertilizers and growth promoters - 39.6-40.6 g. The maximum value was obtained in the variants Gumat K and Azotovit + Fosfatovit and amounted to 40.6 g. The grain weight per one plant also increased from 0.60 g without any application to 0.62-0.66 g when treating seeds with the studied products. Gluten content increased from 32.4% without any products to 33.1-34.7% with their application with the maximum in the variant Azotovit + Fosfatovit + Gumat; grain protein content increased from 16.3 to 17.1-17.4%.