Analysis of Differences in Color and Irradiation Length of the LED Strip Lights in Lettuce (Lactuca sativa L. var. Grand Rapids) Cultivation with Wick Hydroponic System

Lettuce (Lactuca sativa L.) is a plant that really needs water to support its growth. In addition, in order to get the maximum growth, lettuce requires irradiation for 14-16 hours daily. Sufficient irradiation can help lettuce to support the process of photosynthesis and plant growth. Engineering that can be done to optimize plant growth includes the use of hydroponic systems and the addition of artificial light (LED). The purpose of this study was to determine the effect of the difference in the color of LED lamp light and the duration of irradiation on the growth and production results of the lettuce. The method used in this study was a 2-factorial Group Randomized Design, namely the color of the LED lights (red 100%, blue 100%, white 100% and a combination (red 75%, blue 10% and white 15%)) and the duration of irradiation (3 hours and 12 hours) then continued with the LSD (Least Significance Different) and Duncan Multiple Range Test (DMRT) tests at a confidence level of 5%. The results showed that the lamp addition treatment using red color and the duration of additional irradiation for 3 hours had the best results.