METHOD OF INHIBITING PREMATURE BUDDING OF SHORT-DAY FLORAL CROPS

摘要

METHOD OF INHIBITING PREMATURE BUDDING OF SHORT-DAY FLORAL CROPS A method of inhibiting premature budding and subsequent flowering of a floral crop selected from the group of chrysanthemum and poinsettia during the season in which the daily photoperiod does not exceed ten hours comprises the step of illuminating the crop, generally six hours after the onset of a night period, with a fifteen minute illumination of a narrowband red light having a predominant emission peak centered around 660 nm having an intensity in the range of 1 .mu.W/cm2 to 50 .mu.W/cm2.