KSM 8409 is a medium-early simple hybrid of maize (Zea mays L.) intended for grain production. The plant is tall with slightly curved leaves and a small angle between the leaf blade and stem. The tassel is characterized by early-to-medium flowering time, weak anthocyanic pigmentation of the glume and silk, and medium main axis height relative to side branches. The ear has medium or long length with moderate row numbers, possessing intermediate kernel type and yellow-orange upper part coloration. The vegetative period is approximately 125 days, slightly exceeding standard indicators. The hybrid exhibits high yield — average grain yield reaches 94.2 c/ha, which is 12.9% higher than the standard, while maximum yield under favorable conditions may reach 140.4 c/ha. Grain moisture at harvest is about 32.4%, slightly higher than standard values. KSM 8409 has good drying capacity, facilitating grain drying and storage. Recommended planting density varies from 65 to 80 thousand plants per hectare depending on growing conditions. The hybrid is characterized by rapid early growth and high adaptability to various climatic conditions, including the Polissia, Forest Steppe, and Northern Steppe zones of Ukraine. It possesses genetic resistance to gray leaf spot and high drought resistance (rating 9 out of 10), as well as above-average resistance to common diseases. Due to these qualities, KSM 8409 is a reliable choice for obtaining high-quality grain and is suitable for use in alcohol production.
