Summary
This controlled study examined how different LED light qualities and intensities influence the growth and physiological responses of Seolhyang strawberry daughter plants in urban plant factory systems. Red + blue mixed LED light at higher PPFD (241–243 μmol·m⁻²·s⁻¹) generally promoted above-ground growth and stem thickness most effectively, whilst white fluorescent light maximised plant height and leaf dimensions. The findings suggest that mixed-wavelength LED systems with elevated photon flux densities optimise daughter plant development compared to monochromatic light, potentially improving propagation efficiency in controlled urban agricultural environments.
Regional applicability
These findings are potentially transferable to United Kingdom controlled environment horticulture operations, particularly commercial strawberry propagation in plant factories or high-tech glasshouses. However, the study's specificity to Seolhyang strawberry cultivar and urban plant factory conditions means results may require validation for UK-grown varieties and integration with existing propagation protocols.
Key measures
Plant height, stem thickness, leaf width, petiole length, leaf growth rate, chlorophyll content, photosynthetic photon flux density (PPFD), and photosynthetic vitality across different LED light qualities (red monochromatic, blue monochromatic, red + blue mixed, and white fluorescent)
Outcomes reported
The study measured the effects of different LED light wavelengths and photosynthetic photon flux density (PPFD) on growth metrics, chlorophyll content, and photosynthetic vitality of Seolhyang strawberry daughter plants in urban plant factory conditions.
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