Paprika (Capsicum annuum L.) has recently seen increased cultivation area and yield and is known to respond well to supplemental lighting to enhance light conditions during periods of short-day length hours.This study evaluated methods of supplemental lighting by analyzing the photosynthetic rate, growth, and yield of paprika leaves under different lighting treatments.During a six-month cultivation period, treatment groups that utilized solar radiation sensitivity under general supplemental lighting (GSL), which operated under low solar radiation, and daily integral supplemental lighting (DISL), which operated until the target amount of light was achieved, were compared to a control group without supplemental lighting.Photosynthetic rate of paprika under both supplemental lighting conditions was higher than in control, and DISL promoted a significantly higher photosynthetic rate than other treatments.Growth analysis showed the characteristic indeterminate growth of paprika where vegetative and generative growth alternated under defoliation.The maximum relative growth rate (RGR), leaf area ratio (LAR), and specific leaf area (SLA) were initially 8 mgg, and 310 cm, but they decreased as growth progressed.Net assimilation rate (NAR), which was related to the main factors in plant productivity, changed according to growth stage.Leaf area index (LAI) initially increased from 1.0 to 2.5.Crop growth rate (CGR) was the maximum at 10.2 gm -2 d-1 when LAI was 2.4.Sugar content and yield of fruits were higher in the supplemental treatment groups than the control.These findings suggest that paprika could be efficiently cultivated even in poor light conditions by providing a light level adequate to allow morphological and physiological differentiation.