Chaika

Reliable Yields: Breeding by DS Mayak

The 'Chayka' onion variety is a time-tested selection from the DS Mayak Institute of Vegetable and Melon Growing (NAAS), established as a staple in the mid-late maturity segment. The originator prioritized plant endurance, specifically focusing on building natural resistance to fungal threats, most notably downy mildew (peronosporosis). In the Ukrainian agricultural context, this variety demonstrates a level of consistency essential for growers focused on long-term storage and market demand.

Technical Specifications and Market Appeal

The growing period for 'Chayka' is 110–120 days, allowing for predictable harvesting schedules. The bulbs feature a distinctive round-cuboid shape and an attractive appearance: the bronze-yellow skin reliably protects the crisp, dense white flesh. The average weight of a marketable bulb ranges between 200 and 250 grams.

A critical parameter for the professional segment is the dry matter content. With a range of 13–15%, this variety shows a strong correlation with longevity. It is capable of retaining its marketability for 9–10 months, making it a highly profitable option for winter and spring sales.

Agronomic Advantages

• High resistance to downy mildew reduces the necessary fungicide pressure during the season.
• The dense structure of the bulb minimizes mechanical damage during automated harvesting and transport.
• Excellent adaptability to various soil and climate conditions across Ukraine.

'Chayka' is a rational choice for producers seeking the optimal balance between high yield, low maintenance requirements, and the ability to maintain stock quality until market prices reach their peak.