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2025 Vol.43, Issue 5 Preview Page

Research Article

Comparison of Carbon Dioxide Concentration Distribution and Growth of Bell Pepper according to Locations Within a Multi-span Greenhouse
Jae Seong Lee1
,
Jong Hwa Shin12*
1Department of Horticulture and Breeding, Gyeongkuk National University, Andong 36729, Korea
2Department of Smart Horticultural Science, Gyeongkuk National University, Andong 36729, Korea
*Corresponding Author
31 October 2025. pp. 554-563
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Abstract

This study was conducted in a 5,200 m2 plastic multi-span greenhouse to establish an efficient carbon dioxide (CO2) supply strategy by analyzing the distribution of CO2 concentrations according to greenhouse spatial positions and evaluating the effects of CO2 concentration variations on growth rate and yield of paprika. The experiment was carried out from February 21 to July 30, 2024, and supplemental CO2 was not separately supplied during the experiment in order to analyze the spatiotemporal distribution patterns of CO2 within the greenhouse environment. CO2 concentrations were continuously measured at upper and lower positions of the plant canopy using Arduino-based CM1107 sensors. Spatially, the greenhouse was divided into front and rear sections, as well as horizontally into left, central, and right positions. Plant growth parameters, including plant height, stem diameter, number of leaves, number of nodes, leaf area, and fresh weight, were measured weekly and statistically analyzed. The relationship between weekly cumulative daily average CO2 concentration and crop growth rate was evaluated using nonlinear regression modeling. The weekly greenhouse CO2 concentrations notably decreased immediately after sunrise during the early growth stage due to increased photosynthetic activity, while nighttime CO2 levels gradually increased throughout the growth period due to biomass accumulation and associated respiratory CO2 release. Among the positions within the greenhouse, the cumulative daily average CO2 concentration was highest at position A2F, recording 71,478.14 µmol·mol-1, which corresponded to higher fresh weight and leaf area values of 1,015.77 g and 14,416.08 cm2, respectively. The relationship between weekly cumulative daily average CO2 concentration and crop growth rate was best described by a Gaussian peak model (R2 = 0.58). The findings regarding the spatiotemporal distribution of CO2 concentrations within the greenhouse and the resulting crop growth and productivity from this study could serve as fundamental data useful for establishing greenhouse environmental management strategies.

Keywords
CO2 concentration
energy efficiency
greenhouse
livestock manure
paprika
reuse
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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :한국원예학회
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 43
  • No :5
  • Pages :554-563
  • Received Date : 2025-02-24
  • Revised Date : 2025-04-22
  • Accepted Date : 2025-04-22
  • DOI :https://doi.org/10.7235/HORT.20250048
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