MAŠUK 320 — this is an early-maturing three-line hybrid corn, intended for cultivation in various climatic zones, including the Central, Central Chernozem, and Volga regions. The hybrid's vegetation period averages from 111 to 155 days depending on growing conditions. The plant is of medium height with straight or slightly curved leaves, anthocyanin coloration of roots and stems ranging from weak to moderate. The tassel features moderate ear density, with a main axis of medium or large length forming a medium angle with side branches. The ear is long, thick, slightly conical, with a medium-length stalk and medium number of rows of kernels. The kernel is intermediate type, closer to starchy, with yellow-orange coloring of upper and lower parts. The MAŠUK 320 hybrid is characterized by high yield and good adaptability to various conditions. Average grain yield in the Central region reaches 99.2 c/ha, in the Central Chernozem — 80.6 c/ha, and in the Volga region — 83.9 c/ha, significantly exceeding the level of standard varieties. Maximum yield in individual farms reached 175.8 c/ha. Grain moisture at harvest varies from 21.8% to 29% depending on the region, ensuring ease of storage and processing. Moreover, the hybrid demonstrates high yield of normalized dry matter, making it attractive for grain and silage production. MAŠUK 320 exhibits moderate resistance to stalk rot, gray leaf spot, and is weakly affected by Fusarium and ear mold, enhancing its reliability in field conditions. The hybrid’s seeds meet high quality standards and are suitable for various uses in agriculture, including grain, silage, and feed production. Thanks to its characteristics and adaptability, MAŠUK 320 is an effective choice for farmers aiming to achieve a stable and high corn yield.