POSSIBILITIES OF YEAR-ROUND ROMAINE LETTUCE PRODUCTION IN NORTH CYPRUS

In this study, three different varieties (Paris Island, Filipus and Quintus) were grown between September 2010 and August 2011 and recorded their bolting rates, head fresh weight, head diameter, and head length. Seeds were sown in the first day of each month starting from September 1, 2010, until August 1, 2011. The average head fresh weight, head diameter, and head length were determined as plant growth parameters. Bolting percentage was also recorded. All varieties showed early bolting in spring and summer growing period. The highest average head fresh weight was acquired from Paris Island cultivar. Paris Island was showed highest head fresh weight from October to March sowing periods, and bolting did not observe from October to February sowing periods.