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http://dx.doi.org/10.12791/KSBEC.2022.31.4.504

Comparison of Tomato Growth and Yield according to Solar Radiation by Location in Multi-span Greenhouses  

Shin, Hyun Ho (Protected Horticulture Research Institute, NIHHS, RDA)
Choi, Man Kwon (Protected Horticulture Research Institute, NIHHS, RDA)
Ryu, Hee Ryong (R&D Performance Evaluation & Management Division, Research Policy Bureau, RDA)
Cho, Myeong Whan (Protected Horticulture Research Institute, NIHHS, RDA)
Kim, Jin Hyun (Protected Horticulture Research Institute, NIHHS, RDA)
Seo, Tae Cheol (Protected Horticulture Research Institute, NIHHS, RDA)
Yu, In Ho (Vegetable Research Division, NIHHS, RDA)
Kim, Seung Yu (Vegetable Research Division, NIHHS, RDA)
Lee, Choung Kuen (Protected Horticulture Research Institute, NIHHS, RDA)
Publication Information
Journal of Bio-Environment Control / v.31, no.4, 2022 , pp. 504-512 More about this Journal
Abstract
To examine the distribution of internal solar radiation within various locations in multi-span greenhouses, the solar radiation, light transmittance, and accumulated radiation at the central and lateral sections were analyzed by dividing 8:30 to 12:30 in the morning and 12:35 to 16:30 in the afternoon. The growth and yield of tomatoes within these sections were also compared. In the morning, the solar radiation of the central section and the side section was 275.2 W·m-2 and 314.9 W·m-2, while in the afternoon, it was 314.9 W·m-2 and 313.9 W·m-2, respectively. The light transmittance and accumulated radiation were also low, confirming the low distribution of solar radiation in the central (connecting) section of the multi-span greenhouses. The growth survey revealed no significant difference. The final yield of tomatoes per plant was 4,828 g in the central section and 4,851 g in the lateral section, but there was no significant difference in the central section compared to the lateral section by 0.5%. However, the amount of solar radiation as per time in the central section is higher than the light compensation point, 60 W·m-2, and slightly lower than the light saturation point of tomatoes, i.e., 281 W·m-2. The results of this study can help in greenhouse design based on the insolation environment.
Keywords
greenhouse frame; light compensation point; light saturation point;
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Times Cited By KSCI : 5  (Citation Analysis)
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