Effects of LED(Light Emitting Diode) Photoperiod and Light Intensity on Growth and Yield of Taraxacum coreanum Nakai in a Plant Factory

Estimation of Lettuce Growth Characteristics Under Different LED Light Intensities in a Closed-type Plant Factory

“…The SPAD value increased until the 2nd week after sowing and decreased from the 3rd week after sowing, similarly to what was reported by Jeon (2014) and Kwak (2015). The SPAD value tended to increase as the light intensity increased, and this result is in agreement with the results of Hwang et al (2016) and Yeo et al (2017. In addition, Park andLee (1999) reported that the A B C Fig.…”

“…The prediction model for lettuce growth was developed by regression analysis. the SPAD values differed (Park and Lee, 1999;Suh and Kim, 2011;Kwak, 2015;Hwang et al, 2016). In addition, growth characteristics of lettuce plants were measured every 2 d from day 10 to day 20 after sowing.…”

“…Specifically, studies on light source, light quality, and LED photoperiod time using lettuce in a closed-type plant factory have been actively conducted (Park et al, 2012;Cha et al, 2013;Kim et al, 2014). Also, studies on light intensity using lettuce and Taraxacum platycarpum in a closed-type plant factory have been conducted (Cha et al, 2012;Hwang et al, 2016). However, studies on the light intensity of LED light sources using lettuce in a closed-type plant factory are still insufficient.…”

A study on the design and operation method of plant factory using artificial intelligence

“…Uoon et al [1] were carried to select suitable kohlrabi cultivar for hydroponics in a closed-type plant factory system. Hwang et al [2] examined the effect of photoperiod and light intensity of RBW LED (red:blue:white = 2:1:1) on the growth of Taraxacum coreanum Nakai in a fully artificial light type plant factory the growth environment information of agricultural crops. Um [3] considered in the plant factory system that had only weak light density.…”