The formula to calculate the PPFD from Lux is:
\[ PPFD = \text{Lux} \times \text{CF} \]
Where:
Lux to PPFD (Photosynthetic Photon Flux Density) is a conversion that translates the measurement of total light intensity (Lux) into the measurement of the light intensity beneficial for plant growth (PPFD). Lux measures all visible light, regardless of its usefulness to plants, while PPFD measures only the light within the photosynthetically active radiation (PAR) range, which is light that plants can use for photosynthesis. Therefore, converting Lux to PPFD provides a more accurate understanding of how much light plants are actually receiving for growth.
Example 1:
Using the formula:
\[ PPFD = 50000 \times 0.0185 = 925 \text{ μmol/m²/s} \]
Example 2:
Using the formula:
\[ PPFD = 30000 \times 0.0185 = 555 \text{ μmol/m²/s} \]
