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Effects of the different LED light colors on the growth and yield of cos lettuce (Lactuca sativa L. var. longifolia)
Author(s)
Date Issued
September 1, 2024
Type
Article
Abstract
The effect of nighttime supplemental lighting using different colored light-emitting diodes (LEDs) on the growth and yield of cos lettuce (Lactuca sativa L. var. longifolia) was investigated. Red LED light significantly enhanced plant height (20.54 cm) compared to other colors and a control group without supplemental light (17.84-19.74 cm). While red light also produced the highest average leaf count (17.25 leaves)It was not statistically different from other light treatments, though it surpassed the control (13.25 leaves). Notably, red LED light was significantly increased in fresh weight yield (83.0 g) and all other treatments which averaged from 49.45 to 73.75 g). These findings demonstrated that the red LED light's superior efficacy to promote the growth and yield of cos lettuce. Practical application of this technology in a field trial through the Future Farmers of Thailand Organization in Phetchaburi province resulted to increase yield of 20%, which accompanied by high participant satisfaction with the potential of cos lettuce production for future careers.
Citation
International Journal of Agricultural Technology, 20(5), 2157-2168, 2024