Spring oat of the 'TRIO' variety is a medium-maturing grain crop recommended for cultivation in the Middle Volga, Ural, and Far East regions. This variety is well-adapted to various soil and climatic conditions, ensuring stable yields. The plants are medium-sized, reaching heights of 76 to 100 cm, with an upright bush and a two-sided panicle with semi-raised branch arrangement. The grain is large, with a mass of 1000 grains ranging from 31 to 41 grams, and a grain bulk of 450-610 g/l. The variety is characterized by resistance to lodging and drought resistance at the level of standard varieties, making it a reliable choice for various growing conditions. The 'TRIO' variety is distinguished by high yields, averaging 31.2-39.4 c/ha in various regions, with maximum indicators up to 59.1 c/ha and a potential of over 70 c/ha. The vegetative period is 72-90 days, corresponding to a medium-maturing ripening period. In terms of disease resistance, the variety is moderately resistant to powdery and hard head smut, but susceptible to crown rust. The white-grained mutant variety is characterized by large, well-formed grain with a protein content of 10.1 to 13.0% and hulls of 25-26%, making it valuable in terms of quality for feed use. Oat 'TRIO' is widely used in feed production for animals such as horses, bulls, and cows, thanks to its nutritional properties. In addition to feed value, oat has useful biological properties, including anti-inflammatory action and improved carbohydrate absorption due to the enzymes contained in it. These qualities make the 'TRIO' variety not only an effective agricultural product but also a useful component in the animal diet.