TY - JOUR
T1 - Application of plasma lighting for growth and flowering of tomato plants
AU - Park, Kyoung Sub
AU - Kim, Sung Kyeom
AU - Lee, Sang Gyu
AU - Lee, Hee Ju
AU - Kwon, Joon Kook
N1 - Publisher Copyright:
© 2018, Korean Society for Horticultural Science.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Plasma lighting systems have been engineered to simulate sunlight. The objective of this study was to determine the effects of plasma lighting on tomato plant growth, photosynthetic characteristics, flowering rate, and physiological disorders. Tomato plants were grown in growth chambers at air temperatures of 25/23 °C (light/dark period), in a 16 h day−1 light period provided by four different light sources: 1 kW and 700 W sulfur plasma lights (1 SPL and 0.7 SPL), 1 kW indium bromide plasma light, and 700 W high pressure sodium lamp (0.7 HPS) as a control. The total dry weight and leaf area at 0.7 SPL were approximately 1.2 and 1.3 times greater, respectively, than that of 0.7 HPS at the 62 days after sowing (DAS). The maximum light assimilation rate was observed at 1 SPL at the 73 DAS. In addition, the light compensation and saturation points of the plants treated with plasma lighting were 98.5% higher compared with HPS. Those differences appeared to be related to more efficient light interception, provided by the SPL spectrum. The percentage of flowering at 0.7 SPL was 30.5%, which was higher than that at 0.7 HPS; however, there were some instances of severe blossom end rot. Results indicate that plasma lighting promotes tomato growth, flowering, and photosynthesis. Therefore, a plasma lighting system may be a valuable supplemental light source in a greenhouse or plant factory.
AB - Plasma lighting systems have been engineered to simulate sunlight. The objective of this study was to determine the effects of plasma lighting on tomato plant growth, photosynthetic characteristics, flowering rate, and physiological disorders. Tomato plants were grown in growth chambers at air temperatures of 25/23 °C (light/dark period), in a 16 h day−1 light period provided by four different light sources: 1 kW and 700 W sulfur plasma lights (1 SPL and 0.7 SPL), 1 kW indium bromide plasma light, and 700 W high pressure sodium lamp (0.7 HPS) as a control. The total dry weight and leaf area at 0.7 SPL were approximately 1.2 and 1.3 times greater, respectively, than that of 0.7 HPS at the 62 days after sowing (DAS). The maximum light assimilation rate was observed at 1 SPL at the 73 DAS. In addition, the light compensation and saturation points of the plants treated with plasma lighting were 98.5% higher compared with HPS. Those differences appeared to be related to more efficient light interception, provided by the SPL spectrum. The percentage of flowering at 0.7 SPL was 30.5%, which was higher than that at 0.7 HPS; however, there were some instances of severe blossom end rot. Results indicate that plasma lighting promotes tomato growth, flowering, and photosynthesis. Therefore, a plasma lighting system may be a valuable supplemental light source in a greenhouse or plant factory.
KW - CO compensation point
KW - Light curve
KW - Light spectrum
KW - Photosynthesis rate
KW - Supplementary lighting
UR - http://www.scopus.com/inward/record.url?scp=85057842222&partnerID=8YFLogxK
U2 - 10.1007/s13580-018-0052-9
DO - 10.1007/s13580-018-0052-9
M3 - Article
AN - SCOPUS:85057842222
SN - 2211-3452
VL - 59
SP - 827
EP - 833
JO - Horticulture Environment and Biotechnology
JF - Horticulture Environment and Biotechnology
IS - 6
ER -