Spring barley variety Omsk 104 is a promising variety that underwent comprehensive research in the southern forest-steppe zone of Western Siberia from 2018 to 2022. The soil of the experimental plots was ordinary chernozem, bleached, with humus content of 6–7%, which ensured favorable conditions for cultivation. The sowing rate was 4 million viable seeds per hectare, and the plot area and experiment replication allowed obtaining reliable data on yield and grain quality. During the research, the variety was compared with standard varieties Omsk 95 and Omsk 103, which allowed identifying its advantages and features. The Omsk 104 variety is characterized by high yield, exceeding the standard by 1.35 tons per hectare, as well as improved grain quality indicators. The mass of 1000 grains of this variety is 10.9 grams greater than that of the standard, indicating grain largeness. Protein content in the grain reaches 13.0%, starch – 56.1%, and crude fat – 1.6%, which corresponds to the level of standard varieties. At the same time, the variety is characterized by reduced bran content by 1% compared to the standard, which is an additional advantage in processing. Omsk 104 also demonstrates resistance to diseases such as black, covered, and loose smut, with a resistance index from 0.01 to 0.10. Thanks to its characteristics, the Omsk 104 variety ensures significant growth of nutrient yield per unit area, including protein, starch, and crude fat, which increases its value for agricultural production. Its adaptability to various moisture conditions, including drought periods, makes it a reliable choice for cultivation in regions with a changeable climate. In 2022, the variety was transferred to state variety testing in the Ural, Western Siberian, and Eastern Siberian regions, which confirms its promising nature and readiness for widespread application.