Sierra Blanca F1 is an ultra-early hybrid white salad onion, developed by the Dutch seed company Seminis. The maturation period is 85-90 days, allowing for very early harvest. The hybrid is suitable for both seed and transplant cultivation in various agroclimatic conditions. The plant has a strong root system and a significant leaf apparatus, which contributes to high yield and resistance to stress factors. Sierra Blanca F1 exhibits high resistance to pink rot, fusarium, and bolting, as well as protection against pests, ensuring stable and high-quality harvests. The bulbs of this hybrid are large, uniform, with an ideal ellipsoidal shape and weigh up to 800 grams. Outer scales are pearl-white, dense and intact, while inner scales are semi-transparent, juicy, and succulent. The onion has a pleasant, moderately sweet flavor, making it an excellent choice for fresh dishes. Moreover, the onion retains its nutritional properties even after heat treatment, being a valuable source of vitamins. The aesthetic appearance of mature root vegetables and their high marketability allow successful market sales, and the preservation of key qualities for 2-3 months ensures a long storage life. Sierra Blanca F1 is light-loving and positively responds to heat and prolonged illumination, well reacts to watering and timely fertilization. The hybrid is a medium-day variety, which influences its vegetative period and adaptation to growing conditions. The recommended seeding rate is 0.75-1 million seeds per hectare. Due to its characteristics, this hybrid is an excellent choice for obtaining ultra-early harvests, especially when grown using the transplant method, allowing farmers to effectively plan and market their crops.
