GK 170 X GK 178 — this is an early-maturing trihybrid corn hybrid, suitable for cultivation as silage and grain. It is characterized by high yield and adapted to various climatic conditions, as confirmed by its inclusion in the State Register for the Central, Volga, and Far Eastern regions. The average grain yield in the Far Eastern region is about 34.9 c/ha, with individual years reaching 78.4 and 79.5 c/ha, indicating stable hybrid productivity under favorable conditions. In the Central region, the hybrid demonstrates high yield of normalized dry matter, averaging 100.8 c/ha, with peak yields reaching 285.0 and 304.0 c/ha. The plant contains about 26.7% dry matter, making this hybrid especially valuable for producing high-quality silage. These characteristics ensure effective use of GK 170 X GK 178 in feed and grain production. The hybrid exhibits high resistance to stem rot, enhancing its reliability and reducing crop losses. However, it is susceptible to severe infection by dusty head smut and damage by corn borer, requiring attention to plant protection during the growing season. Overall, GK 170 X GK 178 is a promising corn hybrid with good agronomic traits and high productivity.