Table 4.

Weekly flowering ratio of red perilla (Experiment 4, n = 5). The UV cut treatment was conducted by covering the UV-B lamp with a UV cut film to evaluate the effect of the visible light of UV-B lamps on flowering. Before covering the lamp with the film, the UV-B radiation intensity at the canopy level was set to 0.1 W m⁻². The weekly percentage flowering was determined by dividing the number of plants that formed flower buds by the number of plants tested. Perilla plants were irradiated for 6 h from 18:00 to 06:00.

Treatment	Weeks
	1	2	3	4	5
Control	0	0	0	100	100
UV cut	0	0	0	0	0