Summary of photosynthetic photon flux density measurement results under various light conditions.
| Condition | Point of measurement | PPFD (mmol/(m2∙s)) | PFD-B (mmol/(m2∙s)) |
PFD-G (mmol/(m2∙s)) |
PFD-R (mmol/(m2∙s)) |
|---|---|---|---|---|---|
| LED (High PPFD) | 30 cm above the ground | 506.0 ± 7.4 | 184.9 ± 4.8 | 126.1 ± 1.2 | 195.1 ± 3.6 |
| LED (Low PPFD) | 257.4 ± 10.4 | 92.9 ± 3.8 | 63.4 ± 3.1 | 101.1 ± 4.0 | |
| Sodium lamp (day) | 288.5 ± 6.9 | 35.4 ± 2.6 | 158.2 ± 4.2 | 94.5 ± 4.0 | |
| Sodium lamp (night) | 188.4 ± 10.8 | 10.8 ± 6.7 | 126.2 ± 5.7 | 55.5 ± 5.6 |
Photosynthetic photon flux density was measured in a wavelength range of 400 to 700 nm, and photon flux density of blue, green, and red were measured in a range of 400 to 500 nm, 500 to 600 nm, and 600 to 700 nm.
PPFD: photosynthetic photon flux density, PFD: photon flux density.
