Optimizing Red, Green, and Blue LED Spectra to Enhance Yield and Quality of Glehnia Littoralis

Recent research highlights the crucial role of optimizing LED light spectra for crop production in controlled environment agriculture (CEA), where lighting accounts for nearly 60% of energy consumption. Previous studies have sought the best light spectra for specific crops but often relied on limited options. This current study builds upon earlier findings, identifying optimal ratios of red (R), green (G), and blue (B) LEDs specifically for the growth and quality enhancement of the wild medicinal plant, Glehnia littoralis. Utilizing a mixture design and response surface methodology, the study found that the R:B ratio of 58.3:41.7 (7:5) significantly boosts yield and bioactive compounds such as phenolics and antioxidants. The combination of R and B wavelengths demonstrated superior growth characteristics while highlighting that differing light spectra can influence both primary and secondary metabolite production. This approach offers a robust framework for selecting optimal light conditions tailored to specific crops, potentially enhancing growth efficiency and product quality in the CEA industry.

Optimizing Red, Green, and Blue LED Spectra to Enhance Yield and Quality of Glehnia Littoralis

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