Kozachok F1 — an ultra-early hybrid of white cabbage, intended for early harvest in open ground and under plastic covers. The vegetation period is 45-56 days after transplanting seedlings, allowing for quick harvest of fresh and high-quality heads. The heads are round, light green in color with white or slightly yellowish-cream interior, average weight ranging from 0.8 to 1.7 kg. The inner core is small, which enhances appearance and ease of use.
The plant forms dense, medium-density heads with excellent taste. Head height reaches 15.5-17.5 cm, and the planting rate is 50-60 thousand plants per hectare, ensuring high yield — up to 35-50 tons per hectare. Yield per square meter reaches 3.2-4.6 kg, with uniform fruiting that simplifies harvest and subsequent marketing.
Hybrid Kozachok F1 exhibits high resistance to major diseases such as bacterial blight and vascular bacteriosis, as well as black leg, which is especially important for seedling cultivation. Additionally, it has moderate resistance to cabbage yellows pathogens, enhancing cultivation reliability and reducing yield loss risks. The primary use of cabbage is fresh consumption during summer, making this hybrid popular for fresh markets.