Yield and quality management of Rose (Rosa hybrida cv. Poison) with plant growth regulators

This study was done to evaluate effects of different levels of salicylic acid (SA) (50, 100, 150 and 200 mg l(-1)), gibberellic acid (GA(3)) (150, 200, 250 and 300 mg l(-1)), and cycocel (CCC) (500, 1000, 1500 and 2000 mg l(-1)) at pre-harvest stage on the quality, yield and vase life of cut rose (Rosa hybrida 'Poison'). Results showed that the effects of plant growth regulators on bud length, vase life and yield were significant (P <= 0.05). The effect of regulators has also been significant at P <= 0.01 level on fresh weight and flower height. The highest record of flower yield was obtained by application of 200 mg l(-1) GA(3) with 192 cut flowers per year per m(-2). The highest vase life (12.67 days) was obtained when 150 mg l(-1) SA applied to cut flowers. The best treatment to increase the stem flower length was application of 300 mg l(-1) GA(3) which produced longest cm stems (49.33).