Ecological and biogeochemical assessment of selenium accumulation in spring wheat plants under conditions of micro-vegetative experience
A.V. Sindireva, M.D. Aitbayev, N.E. Guryev
Section: Chemistry of natural environments and objects
The article presents the results of evaluating the sodium selenite/selenate effect on the initial growth and development of spring soft wheat (Triticum aestivum) on typical soils of the south Tyumen. The selenium content in wheat depends on many factors: soil physical and chemical properties, soil availability in trace elements, as well as compounds and doses of selenium applied as a microfertilizer. We establish a direct relationship (correlation coefficients from 0.88 to 0.99) between the applied fertilizer doses and the selenium content in the soil. The highest selenium content when applying sodium selenite is noted at 2 MPC Se dose and averages 12.3 mg/kg in dark gray forest soil, and when applying sodium selenate – in meadow chernozem (average value 20 mg/kg). The selenium content in plants varies from 1.0 to 15.0 mg/kg depending on the applied selenium doses and compounds. The complex nature of the interaction between selenium and cadmium, copper, nickel, lead, zinc, potassium and phosphorus is noted. It depends on a number of factors: the physiological properties of the elements, the form of selenium used, and the type of soil on which spring soft wheat plants were germinated. The application of selenium-containing fertilizers can have both a beneficial and depressing effect depending on the selenium compounds and dose. A stimulating effect of sodium selenite application is noted, while the selenium content in the soil ranges from 0.5 to 12.3 mg/kg. However, when using sodium selenate, the toxic effect is noted starting with 1.15 mg/kg in dark gray forest soil, 1.73 mg/kg in leached chernozem, 3.7 mg/kg in meadow chernozem. The effectiveness of selenium-containing fertilizers application for spring soft wheat depends on the type of soil, the shape of the compounds, and the dose of the element.
Keywords: selenium, soils, spring soft wheat, macro- and microelements, Tyumen region
Article published in number 3 for 2025 DOI: 10.25750/1995-4301-2025-3-106-118
ISSN 1995-4301
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