Selection of onions varieties for cultivation in re-culture through seedlings

Field experiments tested 10 varieties and hybrids of the onion of the Uzbek and foreign selection during repeated sowing. The experiments were conducted in a seedling culture in 2015-2016 at the experimental station of the Tashkent State Agrarian University. The most losses of seedlings were observed in the late-ripening varieties of onion Karatal. In the other varieties and hybrids, the density was 16.5% to 28.0%. Variety of onions Istikbol (98.8%), Peshpazak (98.2%), Daytona F1 (98.1%) formed the largest commodity bulbs in the commodity crop, while in the other varieties this indicator was from 90.2 to 97.2%. The highest yield and profitability were obtained with the repeated culture on the hybrids of Daytona F1, (44.1 t/ha), Banco F1, (39.3 t/ha) and Istikbol (38.8 t/ha).