Articles
HEIGHT CONTROL OF POTTED AURELIAN AND TIGER LILIES
Article number
900_15
Pages
133 – 138
Language
English
Abstract
Height control of potted Lilium lancifolium (Tiger lily) and L. × aurelianense (Aurelian lily) plants would improve their marketability in the garden center and extend their market season.
Bulbs (16-18 cm) were treated with Concise (uniconazole) or Piccolo (paclobutrazol). Bulbs were dipped for one minute in a 0, 2, 4, 8, or 16 mg/L Concise solution or for 15 minutes in a 0, 5, 10, 20, or 40 mg/L Piccolo solution.
Drenches were applied at 300 ml per 3.4-L pot when shoots had reached ~5 cm in height.
Drench rates were 0, 1, 2, 4 or 8 mg/L Concise or 0, 5, 10, 20 or 40 mg/L Piccolo.
Concise dips were more effective in reducing Tiger lily plant height than drenches, with dips resulting in a 52% height reduction at six weeks after potting (WAP). Final plant height at 9 WAP was reduced 37% by the 4 mg/L dip rate which was comparable to the growth reduction of the 8 mg/L drench application.
In contrast, Piccolo drenches were more effective than dips in controlling Tiger lily plant height.
Piccolo applied as 10 mg/L drenches resulted in a 23% reduction in plant height at 6 WAP while dip rates at 20 or 40 mg/L resulted in similar height control.
These plants were of acceptable size for marketing as potted plants.
Aurelian lilies were less responsive to Concise.
The 16 mg/L dip reduced plant height 60% at 6 WAP, resulting in a 46% height reduction at flowering
(11 WAP). Concise dip or drench rates between 4 and 8 mg/L resulted in moderate (~30%) height control at 6 WAP that did not persist through flowering.
Piccolo had no significant effect on height of Aurelian lily.
The treatments did not affect time to flowering, flower number or width of the first open flower in either crop.
Bulbs (16-18 cm) were treated with Concise (uniconazole) or Piccolo (paclobutrazol). Bulbs were dipped for one minute in a 0, 2, 4, 8, or 16 mg/L Concise solution or for 15 minutes in a 0, 5, 10, 20, or 40 mg/L Piccolo solution.
Drenches were applied at 300 ml per 3.4-L pot when shoots had reached ~5 cm in height.
Drench rates were 0, 1, 2, 4 or 8 mg/L Concise or 0, 5, 10, 20 or 40 mg/L Piccolo.
Concise dips were more effective in reducing Tiger lily plant height than drenches, with dips resulting in a 52% height reduction at six weeks after potting (WAP). Final plant height at 9 WAP was reduced 37% by the 4 mg/L dip rate which was comparable to the growth reduction of the 8 mg/L drench application.
In contrast, Piccolo drenches were more effective than dips in controlling Tiger lily plant height.
Piccolo applied as 10 mg/L drenches resulted in a 23% reduction in plant height at 6 WAP while dip rates at 20 or 40 mg/L resulted in similar height control.
These plants were of acceptable size for marketing as potted plants.
Aurelian lilies were less responsive to Concise.
The 16 mg/L dip reduced plant height 60% at 6 WAP, resulting in a 46% height reduction at flowering
(11 WAP). Concise dip or drench rates between 4 and 8 mg/L resulted in moderate (~30%) height control at 6 WAP that did not persist through flowering.
Piccolo had no significant effect on height of Aurelian lily.
The treatments did not affect time to flowering, flower number or width of the first open flower in either crop.
Publication
Authors
J. Latimer, J. Freeborn
Keywords
Lilium, growth retardants, Concise, uniconazole, Piccolo, paclobutrazol
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