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http://dx.doi.org/10.12791/KSBEC.2021.30.4.304

Effects of Shield Materials on the Growth and Yield Characteristics of Melon Grown inside a Plastic Greenhouse in Summer Season  

Lee, Jae Han (Protected Horticulture Research Institute, NIHHS, RDA)
Lee, Jung Sup (Protected Horticulture Research Institute, NIHHS, RDA)
Kwon, Joon Kook (Protected Horticulture Research Institute, NIHHS, RDA)
Yeo, Kyung Hwan (Vegetable Research Division NIHHS, RDA)
Bang, Ji Woong (Protected Horticulture Research Institute, NIHHS, RDA)
Kim, Jin Hyun (Protected Horticulture Research Institute, NIHHS, RDA)
Lee, Choung Keun (Protected Horticulture Research Institute, NIHHS, RDA)
Park, Kyoung Sub (College of Natural Sci. Mokpo National University)
Myung, Dong Ju (SUNINUS)
Publication Information
Journal of Bio-Environment Control / v.30, no.4, 2021 , pp. 304-311 More about this Journal
Abstract
This Experiment was conducted to determine the effects of light shield materials when melon grown inside a plastic greenhouse in summer season. The average temperatures were 36.6℃, 34.5℃ and 34.0℃ respectively for the control(non-shield), coating agent, and the white net. The light transmittances were 69% and 75%, respectively inside the greenhouse treated with the coating agent and white net immediately after applicants, compared with that inside the control greenhouse. At the 40 and 80 days after treatment, the light transmittances for the coating agent were 92% and 98%, respectively, indicating it was slowly decomposed and removed, but there was no change in the transmittance for the white net. While the leaf number did not differ among the treatments, the plant height was higher in the white net and shading agent than in control. The weight of the leaves, fresh-weight and dry-weight were no different from that of shading, but it became heavier in the later stages. The marketable fruit yield was increased by 6% for white nets and 5% for the coating agent compared to control, there was no statistical significance. Therefore, coating agent is considered as an effective method to lower temperature during high temperature period, but it is preferable to use it in consideration of cultivation period, because the coating agent is gradually removed.
Keywords
coating agent; solar radiation; thermal imaging; transmittance;
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