Relative effect of led wavelength
Human ‘ eyes seem to light of plant lamp was color temperature and lumen . the plant doesn’t take one look at color temperature and lumen during photosynthesis. the spectrum is import condition for plant growth .

the table is show spectrum that effect of plant growth:

280 ~ 315nm——>for process of plant form and plant physiology with minimal effect
315 ~ 400nm——>can be absorbed little by Chlorophyll, it has been try to prevent that stem elongation,
400 ~ 520nm(blue)——>the ratio of absorbing chl a and carotenoids is highest , so the plant physiology with highest effect in this range.520 ~ 610nm(green)——> the ratio of absorbing pigments is low ,    610 ~ 720nm(red) ——> the ratio of Chlorophyll is low , but these wavelength had effect for photosynthesis .
720 ~ 1000nm——> the ratio of absorbing is low, it is most exciting growth of plant cell , and effect of seed varieties germinate
＞1000nm——>is converted into heat.