TABLE 3.
Temporal lighting combinations during lettuce propagation and production.
| Day 0–11 (propagation) | Day 11–25 (production) |
| WW180 | WW180 |
| R180 | |
| B20R160 | |
| B20G60R100 | |
| B20R100FR60 | |
| B180 | |
| R180 | WW180 |
| R180 | |
| B20R160 | |
| B20G60R100 | |
| B20R100FR60 | |
| B180 | |
| B20R160 | WW180 |
| R180 | |
| B20R160 | |
| B20G60R100 | |
| B20R100FR60 | |
| B180 | |
| B20G60R100 | WW180 |
| R180 | |
| B20R160 | |
| B20G60R100 | |
| B20R100FR60 | |
| B180 | |
| B20R100FR60 | WW180 |
| R180 | |
| B20R160 | |
| B20G60R100 | |
| B20R100FR60 | |
| B180 | |
| B180 | WW180 |
| R180 | |
| B20R160 | |
| B20G60R100 | |
| B20R100FR60 | |
| B180 |
Plants were grown under static or alternate lighting treatments delivered by warm-white (WW) or mixed blue (B; 400–500 nm), green (G; 500–600 nm), red (R; 600–700 nm), and far-red (FR; 700–800 nm) light-emitting diodes (LEDs). The number following each LED type is its respective photon flux density in μmol⋅m–2⋅s–1.