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LIGHTING STRATEGIES: Influence of Daily Light Integral (DLI) and Far-Red on Lemon Balm

Heliospectra PlantLab light studies are designed to determine the effect of different wavelengths and spectra composition.

Using light strategies to create desired crop quality, flavor profiles and plant characteristics provide growers with value-add solutions for their businesses.

  • Place and duration: Heliospectra PlantLab
  • Species: Lemon Balm
  • Lamps: LX601C
  • PAR: Varies to achieve a DLI of 13.0
  • Photoperiod: 16 hours (8.00-0.00)

METHOD: Two spectra were tested using the Heliospectra LX601C, a combination of blue (450nm), red (660nm) and white LEDs (5700K), and a second spectrum with an additional far-red (735nm). Both light treatments summed up the same daily light integral, DLI = 13.

Results: The lemon balm grown without far-red were much smaller and had lower biomass than plants grown with far-red.

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