The objective of the study is to determine the characteristics and advantages of mid-late varieties for sustainable harvesting of food grain in the region based on long-term variety testing. Objectives: to study the economically valuable indicators of spring wheat varieties and to identify the advantages of late-ripening varieties. The object of the study is mid-late ripening spring soft wheat varieties, including the Raduga variety bred by the Kurgan Research Institute of Agriculture. Predecessors are fallow and provo-cative backgrounds: sowing on stubble and late sowing date. Observations and assessments are carried out in accordance with the Methodology of state variety testing. The studies were carried out at the Kurgan Research Institute of Agriculture – a branch of the Ural FRC of the Ural Branch of the RAS. Mid-late varieties, when sown at different times, excluding extremely late ones, showed an advantage in a number of economically valuable traits. The mid-late Raduga variety allows obtaining consistently high indicators in various weather conditions. For the period 2017–2023, with a yield of 1.22–5.53 t/ha, the excess over the Uralosibirskaya standard was 0.24 t/ha, with annual fluctuations from 0.08 to 0.53 t/ha. In arid conditions of 2020–2021 it was 0.15–0.20 t/ha. The variety responds to fertilizers and the use of fungicides. The grain quality met the GOST requirements for valuable wheat or a good filler. The gluten content in the grain, depending on the conditions, ranges from 23 to 37 %, protein – 14.7–15.7 % (2021–2023). Raduga, thanks to its genetically determined resistance to diseases, exceeded the standard in yield in three sowing pe¬riods by an average of 1.27 t/ha during the years of rust epiphytotics, demonstrating a resistance of 1.5 points versus 5 points for the standard.Against the background of mass germination of grain on the root in 2023, the percentage of sprouted grains in Raduga was 14.5 versus 40 % in the Uralosibirskaya standard. It is included in the list of breeding achievements for 7 and 9 regions of Russia.
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