Abstract
Research was carried out in order to study the effect of new biologics based on rhizosphere microorganisms on yield and the spring wheat grain’s quality. The work was carried out in 2018–2020 in the Ulyanovsk oblast on leached heavy loam chernozem in a microfield experiment in vessels without a bottom with an area of 0.018 m2. The experiment’s scheme was as follows: Р45K4 (control)—background 1; background 1 + Strain KL‑10; background 1 + Strain 17–1; background 1 + Rhyzoagrin; N45Р45K45—background 2; background 2 + Strain KL‑10; background 2 + Strain 17–1; background 2 + Rhyzoagrin; N45Р45K45. It was discovered that presowing inoculation of spring wheat seeds with new biological preparations based on associative rhizobacteria’s strains increases grain weight by 19–22%. The increases from the Rhyzoagrin biologics’ use on Р45K45 as a standard averaged 66 g/m2 (+13% to Background 1), 98 g/m2 (+19%) from strain KL‑10, and 113 g/m2 (+22%) from strain 17–1. On the NPK background, the biologic based on 17–1 was most effective: 80 g/m2 (+15%). The maximum yield obtained from N90 was 789 g/m2 (+51%), 647 g/m2 (+24%) from N45, which is comparable to 17–1 (636 g/m2). The raw protein’s collection increase from the introduction of N90 to 80% as a result of exposure to nitrogen nutrition, crop production, from the biological products’ usage, or N45 was by 25–32%. The nitrogen fertilizers’ and biologics use positively affected the accumulation of nitrogen consumed in the grain, increasing the nitrogen index (the share of nitrogen accumulated in the grain from its total accumulation in the crop) from 64 to 71%, increasing the ammonium nitrate nitrogen’s payback with the grain harvest’s growth by 52 –67%.
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Alferov, A.A., Nikitin, S.N., Chernova, L.S. et al. Efficiency of Application of Nitrogen Fertilizers and Biological Products on Spring Wheat. Russ. Agricult. Sci. 49, 622–626 (2023). https://doi.org/10.3103/S1068367423060034
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DOI: https://doi.org/10.3103/S1068367423060034