Table 1.

Details of how 14 fresh duckweed plants were cultured to one-week maturity.

No.	Detail
No.1	Indoor – vertical tray type, light intensity 200 μmol/m2/s fluorescent white light
No.2	Indoor – vertical tray type, light intensity 250 μmol/m2/s LED white light
No.3	Indoor – vertical tray type, light intensity 200 μmol/m2/s LED white light
No.4	Indoor – vertical tray type, red + blue LED light intensity 200 μM/m2/s
No.5	Indoor – vertical tray type, white + red + blue LED light intensity 200 μM/m2/s
No.6	Indoor – cylindrical horizontal stirring system, LED light, concentrated light 200–600 μM/m2/s
No.7	Indoor – vertical tray type, water supply
No.8	Outdoor – vertical tray type hydroponics fertilizer EC 0.5 mS/cm
No.9	Outdoor – vertical tray type, reverse osmosis water
No.10	Outdoor – cement pond – manure – pig manure
No.11	Outdoor – cement pond – chemical fertilizer formula 16-16-16
No.12	Outdoor – cement pond – hydroponics fertilizer EC 0.5 mS/cm
No.13	Outdoor – cement pond – hydroponics fertilizer EC 1 mS/cm
No.14	Commercial sample (control)

Experimental design.