Abstract
Red onion varieties are among the richest sources of food flavonoids derived from quercinus. This study presents material on agrotechnological evaluation of red onion samples. Field experiments were carried out on typical light chestnut soils of the right-bank part of the Lower Volga in the zone of a sharply continental climate with a drip irrigation method. 9 samples of onion of red color of integumentary scales of selection BEJO ZADEN B.V., NETHERLANDS (4 samples) were studied: Red Bull F1, Red Baron F1, Red Ram F1, Robin F1; NUNHEMS B.V., NETHERLANDS (3 samples): NUN 9003 F1 (Merenge), Countach F1, NUN 9005 F1; HAZERA SEEDS, ISRAEL (1 sample): Retano F1; ENZA ZADEN, NETHERLANDS (1 sample): Monastrell F1. The samples were studied according to: characteristics of bulb coloration, morphometric parameters of the bulb, yield and ripeness.
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