UDC 633.63+631.82
DOI 10.36461/NP.2023.65.1.010
CHARACTERISTICS OF SYMBIOTIC ACTIVITY OF PEA PLANTS DEPENDING ON DIFFERENT LEVELS OF MINERAL NUTRITION
V.V. Koshelyaev, Doctor of Agricultural Sciences, Professor; N.V. Shabyshev, Postgraduate; I.P. Koshelyaeva, Doctor of Agricultural Sciences, Associate Professor
Federal State Budgetary Educational Institution of Higher Education "Penza State Agrarian University", Penza, Russia, tel. 8(8412) 62-83-73, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
This article deals with the ability of pea plants to form a nitrogen-fixing symbiosis (NFS) with nodule bacteria depending on the level of mineral nutrition. The fundamental indicators characterising the symbiotic activity of pea plants are analyzed. The purpose of the study is to investigate the characteristics of the symbiotic activity of pea and to justify the optimal level of mineral nutrition that ensures the effective formation of nitro-gen-fixing symbiosis as an indicator of the production process. The following objectives were achieved: study of the dynamics of changes in the number and weight of nodules, comparative assessment of symbiotic activity at different levels of mineral nutrition, determination of the nitrogen fixation coefficient of pea plants at different levels of mineral nutrition. As a result, it was found that the best indicators of symbiotic activity of pea plants are formed against the background of the application of mineral fertilizers in the amount of N16P16K16. This level of mineral nutrition contributed to the formation of a large number of active nodules with a high mass on the root system, the development of a higher active symbiotic potential and specific symbiotic activity during the vegetation period. The N16P16K16 showed high values for fixed air nitrogen and nitrogen fixation coefficient.
Keywords: peas, mineral nutrition level, nitrogen-fixing symbiosis, nodule bacteria, specific activity of symbiosis, nitrogen fixation coefficient.
