Control of Height and Flowering of Ixia Hybrids as Container Plants

in HortTechnology
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  • 1 Department of Plant Science, Rutgers University, P.O. Box 231, New Brunswick, NJ 08903-0231
  • | 2 Biology Department, Union County College, Cranford, NJ 07016

Growth and flowering of Ixia hybrids as potted plants can be controlled environmentally by cool preplant storage of corms, regulation of greenhouse forcing temperatures, and application of a growth retardant. Paclobutrazol applied as a preplant corm soak, a postemergent drench, or a postemergent spray in combination with a 2- to 4-week preplant storage of corms at 7 °C, and an 18 °C day/10 °C night forcing temperature produced attractive and marketable plants. Chemical name used: β-[(4-chlorophenyl)methyl]-α-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanol (paclobutrazol, Bonzi®).

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