Corn Rulexx is a mid-season hybrid with FAO 300, intended for grain production. This hybrid is characterized by high yield, reaching up to 165 ц/ha, and excellent drought and resistance to common corn diseases. Plants reach a height of approximately 250 cm, with ears positioned at about 110 cm. Grain is dent-shaped, with rows per ear ranging from 14 to 16 and kernels per row from 28 to 38, 1000-kernel weight is 330–350 g. Corn exhibits high initial growth energy, ensuring good germination and plant development. Hybrid Rulexx features rapid moisture release upon maturation, significantly facilitating and accelerating harvest, as well as reducing grain drying costs. Due to its high tolerance to stress conditions and adaptability to various soil-climatic conditions, this hybrid consistently delivers good results even under adverse conditions. It is suitable for cultivation under both conventional and minimal tillage systems, and performs well in monoculture, making it a versatile solution for various agronomic technologies. Rulexx ensures a stable and reliable yield with low grain moisture (around 13–14%), contributing to quality preservation and storage convenience. High drought and disease resistance minimizes harvest loss risks, while rapid plant growth and development ensure efficient resource utilization. This hybrid is an excellent choice for farmers aiming to achieve high-quality corn yields under various cultivation conditions.