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The objective of this research was to investigate the effect of uniconazole on growth and flowering of Oriental hybrid lily ´Star Gazei´. Lilies were treated with uniconazole as bulb-dips (25, 50, 75 or 100 ㎎/L), foliar spray (10, 20, 30 or 40 ㎎/L) or soil drench {0.28, 0.56, 0.84 or 1.12 ㎎/L). Uniconazole significantly retarded plant height at all concentrations and for all methods of application in which control 25 ㎎/L bulb dips, and 0.28 ㎎/L soil drench had 65 ㎝, 37 ㎝, and 38㎝, respectively, in plant height. But other treatments tested had plant height less than 30 ㎝, indicative of the excess retardation. Decreased fresh and dry weight were observed by uniconazole application. There was also a trend toward delayed flowering with increasing uniconazole concentration in all application methods, in which control, 100 ㎎/L bulb dip, 40 ㎎/L foliar spray and 1.12 ㎎/L soil drench had 99, 112, 111 and 104 days, respectively, in days to flowering. Number of flowers per plant also decreased with increasing uniconazole concentrations in all application method, but statistical significance was not observed.
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