The Effect of Bulb Sizes on the Yield and Some Plant Characteristics of Bunch-Flowered Daffodil (Narcissus tazetta subsp. tazetta L.)

This study was conducted to determine the effect of different bulb sizes on the yield and some plant characteristics of bunch-flowered daffodil (Narcissus tazetta subsp. tazetta L.) under the conditions of Harran Plain during 2003-2004 and 2004-2005 winter crop production periods in accordance with randomized blocks design with 3 repetitions. Three different bulb sizes (8-10 cm, 10-12 cm and 12-14 cm circumferences) of Viransehir ecotype bunch-flowered daffodils were used. In the study, the plant height (18.40-30.82 cm), number of scape (leafless stem) (0.38-2.63 number plant-1), number of flowers (1.48-4.67 number scape-1), bulb sizes (12.80-13.90 cm), bulb weights (44.58-51.78 g), increase ratio of the bulb size (2.05-43.70 % (cm/cm)), number of bulbils (0.48-4.88 numbers plant-1), bulbil sizes (6.67-9.60 cm) and bulb yields (9.99-11.89 kg m-2) were investigated. Statistical analyses indicated that all properties studied were affected by the bulb size. The bulb size with 12-14 cm was found to be suitable for cut flower production and the bulb sizes with 10-12 cm were suitable for bulb production and landscaped areas