The impact of color of artificial LED lighting on microgreen: a review

Abstract

Microgreen is an emerging agricultural food product that its development can be close type system and rely on the presence of artificial lighting, such as LED. Present study aimed to sum up the artificial LED lighting impact on microgreen production. In general, there were three important variables of light for plant, i.e., light intensity, light duration/photoperiod and light quality. The effect of different LED color on microgreen yield and phytochemical content is also revealed in present review. The red, blue, combination of red and blue, green, white, yellow and UV-A light are numerous choice for optimal microgreen production. However, there is no one-to-all recommendation here, since the LED light suitability is depending upon the plant species and target of market.

Factors Affecting Production, Nutrient Translocation Mechanisms, and LED Emitted Light in Growth of Microgreen Plants in Soilless Culture

“…Microgreen and babygreen plants are grown with light sources, but sprouts do not require light sources . The light duration of 6–8 h for rice grass, 6 h for barley grass, 6 h for oat grass, 12 h for wheat grass, 12 h for jowar grass, 12–16 h for mint, 10–12 h for basil, 6–8 h for rosemary, 8 h for sage, 6–8 h for oregano, 6 h for amaranth, 8 h for beets, 8–10 h for chard, 6 h for quinoa, 12 h for spinach, 6–8 h for chives, 10–12 h for garlic, 12–14 h for leek, 12 h for onion, 12–16 h for carrot, 4 h for celery, 6–8 h for dill, 6 h for fennel, 6 h for cabbage, 6–8 h for cauliflower, 14–16 h for broccoli, 6 h for radish, 6–8 h for aster cress, 14–18 h for mustard, 12–14 h for cucumber, 8–12 h for melons, 14 h for squash, 4–9 h for endive, 14 h for lettuce, 12–13 h for beans, 12 h for welsh onion, 12 h for long green onion, 14–16 h for red swiss chard, 12 h for buckwheat, 16 h for sunflower, 8–12 h for maize grass, 16 h for sunflower and 6–8 h for linseed is essential for microgreen plant production.…”