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http://dx.doi.org/10.12791/KSBEC.2018.27.3.199

Effects of Supplemental LED Lighting on Productivity and Fruit Quality of Strawberry (Fragaria × ananassa Duch.) Grown on the Bottom Bed of the Two-Bed Bench System  

Choi, Hyo Gil (Department of Horticulture, Kongju National University)
Jeong, Ho Jeong (Protected Horticulture Research Institute, NIHHS, RDA)
Choi, Gyeong Lee (Protected Horticulture Research Institute, NIHHS, RDA)
Choi, Su Hyun (Protected Horticulture Research Institute, NIHHS, RDA)
Chae, Soo Cheon (Department of Horticulture, Kongju National University)
Ann, Seoung Won (Department of Horticulture, Kongju National University)
Kang, Hee Kyoung (Department of Horticulture, Kongju National University)
Kang, Nam Jun (Inst. of Agr. & Life Sci., Gyeongsang National University)
Publication Information
Journal of Bio-Environment Control / v.27, no.3, 2018 , pp. 199-205 More about this Journal
Abstract
The aim of this study was to confirm that effects of supplemental LED illumination on a strawberry yield and fruit quality when strawberry grown on a bottom bed to be deficient ambient light due to shading of a upper bed during cultivation by a two-bed bench system. A strawberry was cultivated as a drip irrigation system in the two-bed bench system filled with a strawberry exclusive media from October 2015 to January 2016. The upper and the bottom bed without LED illumination for growth of a strawberry were using as a control. For LED light treatments, from 10 am to 4 pm, we illuminated LEDs as $100{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ of light intensity by using blue, red, and mixing LED (blue plus red) on the strawberry plants of the bottom bed. In the yield of strawberry fruit, the strawberry grown on the bottom bed treated with the blue LED significantly increased compared with that of the bottom bed part control, and increased to by near 90% of the strawberry output of the upper bed part control. The soluble sugar content of strawberry fruit grown on the upper bed part control and on the bottom bed illuminated with blue or mixed LED was higher than that of red LED and the control of the bottom bed. The content of anthocyanin was the highest increased in the strawberry grown on the upper bed part control that received a lot of ambient light, however when comparing only the bottom bed, strawberry fruits grown on all LED treatments were higher than that of the control. Therefore, we considered that using of the blue LED light on the bottom bed of two-bed bench system during strawberry cultivation is advantageous for the increase of yield and improvement of fruit quality.
Keywords
anthocyanin; drip irrigation; shading; soluble sugar; yield;
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