Effects of LED Light and Temperature on Lettuce Growth

  • Hong, Pyo-Hwan (Department of Electronics Engineering Catholic University of Daegu) ;
  • Kwon, Oh-Hoon (Department of Electronics Engineering Catholic University of Daegu) ;
  • Lee, Dong-In (M2Lab, Inc.) ;
  • Park, Jong-Rak (TOPENG, Inc.) ;
  • Ha, Jeong Min (Department of Electronics Engineering Catholic University of Daegu) ;
  • Jeong, Da Un (Department of Electronics Engineering Catholic University of Daegu) ;
  • Han, Seong Ho (Department of Electronics Engineering Catholic University of Daegu) ;
  • Kim, Bonghwan (Department of Electronics Engineering Catholic University of Daegu)
  • Published : 2011.08.31

Abstract

This study examines the effects of lightemitting diode (LED) light and temperature on lettuce growth. For plant growth, we used an LED bar composed of red, white and blue LEDs (4:1:2). Six types of cultivation equipment were used to measure the temperature. To compare their effects, the heights of the lettuces and the water temperatures were measured. The results demonstrated that the lettuce growth was optimal at $25^{\circ}C$.

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