Productivity of a cereal-row crop rotation in the context of an applied biologization practice

The research was carried out to study the effect of biological preparations (Gribofit and Imunazot), applied both separately together with nitrogen fertilizers (at rate 10 kg NPPN. per 1 ton straw) use by-products as fertilizer on crop yield productivity link cereal-row rotation “sunflower–barley-soybean”. work in 2018-2020 Kursk Region typical slightly eroded heavy-loamy chernozem. results are obtained for following variants: 1. crushed crops (control); 2. + at NPPN cereal straw; 3. Imunazot); 4. Imunazot) straw. studies showed that application against background surface embedded provided an increase all relation control. But higher efficiency noted when using plant residues, it 10.67 thousand grain units 1ha, which exceeded control by 3.19 ha (42.6%).