This research has the purpose to value the action of the gibberellic acid (GA3) in cut chrysanthemum 'Viking' as for fenometric parameters, the best time, the frequency and the concentration of the AG3 application to obtain brunches of the best quality in different time of thecultivation. In cultivation during the Summer/Fall, valued the effect of five times the application (2nd, 4th, 8th and 10th week after the plantation) and four concentrations (0, 100, 200 and 300 mg.L-1) in which it was observed that the tallest branches were obtained with applications done during the 2nd and 4th week 200 and 300 mg.L-1, the biggest brunch diameter of the floral peduncle are results of the GA3 of the 100 or 200 mg.L-1 application done on the 4th week. The AG3 200 mg.L-1 concentration independent of the application, the time caused the anticipation of the blossom in a period five days, all the concentration applied from the 8th week on result whiten floral disc.
chrysanthemum; time application; concentration; height plant; stem diameter; cultivation cycle
