EFFECTS OF FREQUENCY AND CONCENTRATION OF B-9 (DAMINOZIDE) ON GROWTH, FLOWERING AND FLOWER QUALITY OF ‘REAGAN SUNNY’ CHRYSANTHEMUM (CHRYSANTHEMUM MORIFOLIUM RAMAT)

A study has been conducted to evaluate the effects of frequency and concentration of B-9 application on growth, flowering and flower quality of ‘Reagan Sunny’ chrysanthemum.
The frequencies tested were one, two and three applications, and the concentrations were 0, 1,250, 2,500, 3,750 and 5,000 mg L^-1. The results showed that effective suppression of growth can be obtained from frequent application, even with low concentration.
The good spray form was obtained by frequent application as well with increased in concentration.
The time of flowering was delayed with the increased in B-9, however there was improvement in flowering synchrony.
There was a strong interaction effect of frequency and concentration on vase life, where increased the concentration from 0 to 5,000 mg L^-1 double the vase with one application, but the reverse response was found with two and three applications.
Single application with the concentrations of 1,250 and 2,500 mg L^-1 is recommended for production of good spray form and long vase life for chrysanthemum in the lowlands.

International Workshop on Ornamental Plants

S. Ab. Kahar

light spectrum, triazole, anti-gibberellins, plant form

https://doi.org/10.17660/ActaHortic.2008.788.17