Supplemental LED inter-lighting compensates for a shortage of light for plant growth and yield under the lack of sunshine
Fig 2
Effects of LED inter-lighting on photosynthetic photon flux density (PPFD) within the plant canopy.
PPFD was measured by a quantum sensor held at the same angle as nearby leaves. Data are means ± SEM (n = 10). Values marked with the same letter are not significantly different (Tukey’s HSD at P < 0.05).