TY - JOUR AU - Zavalin, Alexey AU - Chebotar, Vladimir AU - Alferov, Alexey AU - Chernova, Lyudmila AU - Shcherbakova, Elena AU - Chizhevskaya, Elena PY - 2021/12/30 Y2 - 2024/03/28 TI - Nitrogen use by plants and nitrogen flows after application of standard and biomodified nitrogen fertilizers on barley JF - Biological Communications JA - BioComm VL - 66 IS - 4 SE - Full communications DO - 10.21638/spbu03.2021.401 UR - https://biocomm.spbu.ru/article/view/9301 SP - 283–289 AB - <p>The aim of our study was to assess the efficiency of application of biomodified nitrogen fertilizers for barley, to reveal the sources of nitrogen used for biomass formation with the use of the <sup>15</sup>N stable isotope, and to study nitrogen flows in the system of fertilizers–soil–plants–atmosphere. We demonstrated in a model experiment the ability of the plant growth-promoting bacteria <em>Bacillus subtilis </em>Ch-13 to move from the granules of mineral fertilizers to plant roots and to colonize them effectively. The effectiveness of biomodified nitrogen fertilizers for barley<em>, </em>Nur variety, was assessed in a microfield trial. After the application of biomodified nitrogen fertilizers, the accumulation of <sup>15</sup>N in the plants increased by 2–5 %, its incorporation in the soil decreased and gaseous losses were decreased by 7 % as compared with the use of the usual forms of fertilizers. The application of biomodified nitrogen fertilizers can be used in agricultural practice as a novel technology to regulate nitrogen flows in the system of fertilizers–soil–plants–atmosphere.</p> ER -