Illinois State Florists' Association# 234
THE PURPOSE of these tests was to study the effects of CCC (2-chloroethyltrimethylammonium chloride) and Phosfon (tributyl-2, 4-dichlorobenzylphosphonium chloride) on the growth and development of Croft lilies, grown in soil treated with various concentrations of these growth retardants. CCC and Phosfon L, both liquids, were applied as diluted soil drenches when the young plants were 5 to 6 inches tall. Phosfon D, a dry material, was incorporated into the soil mix at the time of potting. The CCC used was an aqueous solution with 50% active ingredient. (Note: Cycocel, the CCC product now being marketed, contains 11.8% active ingredient.) Both forms of Phosfon used contained 10% active ingredient. Excessive elongation of Easter lilies is a perennial problem for growers. Several research workers have demonstrated height control of this crop through the use of growth retarding chemicals. The, following experiments were undertaken to further establish and clarify which of these materials, in what form, is most desirable for this purpose and to determine optimum rate of application.
Keywords: Cycocel CCC Phosfon L Phosfon D Excessive elongation