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Comparison of Different Temperature Control Systems in Tropical-Adapted Greenhouses for Green Romaine Lettuce Production
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Document Title
Comparison of Different Temperature Control Systems in Tropical-Adapted Greenhouses for Green Romaine Lettuce Production
Author
Kumsong N. Thepsilvisut O. Imorachorn P. Chutimanukul P. Pimpha N. Toojinda T. Trithaveesak O. Ratanaudomphisut E. Poyai A. Hruanun C. Yanuwong S. Pakhamin W. Kayoontammarong C. Janpeng M. Ehara H.
Affiliations
Department of Agricultural Technology Faculty of Science and Technology Thammasat University Rangsit Center Klong Luang Pathum Thani 12120 Thailand; National Nanotechnology Center (NANOTEC) National Science and Technology Development Agency Klong Luang 12120 Pathum Thani Thailand; National Center for Genetic Engineering and Biotechnology (BIOTEC) National Science and Technology Development Agency Klong Luang 12120 Pathum Thani Thailand; National Electronics and Computer Technology Center (NECTEC) National Science and Technology Development Agency Klong Luang 12120 Pathum Thani Thailand; National Science and Technology Development Agency Klong Luang Pathum Thani 12120 Thailand; International Center for Research and Education in Agriculture Graduate School of Bioagricultural Sciences Nagoya University Nagoya 464-8601 Japan
Type
Article
Source Title
Horticulturae
ISSN
23117524
Year
2023
Volume
9
Issue
12
Open Access
All Open Access Gold
Publisher
Multidisciplinary Digital Publishing Institute (MDPI)
DOI
10.3390/horticulturae9121255
Abstract
The cultivation of lettuce in greenhouses is negatively impacted by high temperatures especially in hot climates. Therefore developing an efficient method to regulate the internal temperature of greenhouses is essential to sustain crop productivity throughout the year. This study intends to investigate differential temperature control systems for green romaine lettuce production in the greenhouse. The experiment was conducted in a completely randomized design (CRD) with five replications. The four treatments consisted of (1) control (2) Fogging + ventilation fan (3) Fogging + shading and (4) Fogging + ventilation fan + shading. The different temperature control systems influenced the growth and yield parameters in which shading operation appears to cause reductions in photosynthetic rate leading to declines of marketable fresh weight. However the operation of the fogging and ventilation fan was considered the appropriate method for improving indoor air temperature since this resulted in higher growth and yield and a greater sensory evaluation. Maintaining VPD values between 1.62 and 1.76 kPa and controlling light intensity within the 530�0 mol m?2 s?1 range were recommended to ensure a consistent lettuce yield of 65� g plant?1 throughout the year. ? 2023 by the authors.
Keyword
lettuce | sensory evaluation | smart greenhouse | VPD | Yield
License
CC BY
Rights
Authors
Publication Source
WOS