Abstract
The experimental study of indoor cultivation using high power light emitting diode (LED) lighting system to accelerate the growth rate of Lactuca sativa plant is presented in this article. A novel high power LED lighting system with the use of aluminum indium gallium phosphide (AlInGaP) and indium gallium nitrate (InGaN) LEDs to produce photosynthetically active radiation (PAR) light source required for photosynthesis process of plant has been constructed. This study has verified that high power LED lighting system can accelerate the growth rate of L. sativa when compared with those plants cultivated under normal solar irradiance. Key words: Lactuca sativa, high power LED, AlInGaP, InGaN, photosynthetically active radiation, indoor plant cultivation, Solar irradiance.
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