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Background: Currently, technologies that provide the energy and nutritional value of agricultural crops under extreme growing condishions have the greatest advantage. Much research is devoted to the study of the effect of brassinosteroids and their analogs, as well as zircon, which have a multifunctional effect on the yield and the formation of elements of productivity of various agricultural plants. Also many studies have been carried out to study the effect of microelements on the formation of yield and adaptive ability of grain crops. However, some aspects of increasing the efficiency of growth regulation and microelements require further study. In this regard, studies were carried out to study the effect of the combined use of growth regulators and sodium selenite on the yield and the formation of productivity elements of spring wheat, depending on the conditions of water supply. The efficiency of the action of plants growth epin and zircon, introduced together with sodium selenit, on the yield and production process of spring wheat plants under conditions of optimal irrigation and short-term soil drought has been studies.Methods: The research was carried out in 2018-2019. In a vegetation experiment at the Russian State Agarian University-Moscow Agricultural Academy. The object of research was spring soft wheat of the Ivolga variety. The plants were grown in vessels with a capacity of 5 kg of soil. For the experiments, a soddy-podzolic medium loamy soil was used. The optimal conditions for water supply were created watering the vessels during the entire growing season. A short-trem drought was created by stopping irrigation duting the steming phase. The duration of the drought is 5-6 days. In experiments, growth regulations epin, zircon and sodium selenite were studied, which were used by treating seeds before sowing wich 0,01% solutions of preparations. In the studies, the yield of spring wheat ang the formation of productivity elements were determined. Result: Analysis of variance results for differences in the action of sodium selenite, zircon and epin, as well as their combination on various aspects of the production process of forming wheat yield. The stimulating effect of the combined use of sodium selenite and zircon on the reproductive organs of wheat was established, as a result of cariopses in an ear increased by 1.43 time. The activation of the attracting ability of the ear established when using the conscientious use of sodium selenite and epin. As a result, the wheat yield increased by 20% with optimal water supply and drought.

​Yield of Spring Wheat with the Combined Use of Sodium Selenite and Growth Regulators Depending on the Conditions of Water Supply

Yield of Spring Wheat with the Combined Use of Sodium Selenite and Growth Regulators Depending on the Conditions of Water Supply