Why is red light better than blue on the plant growing proccess?
It has to do with the absorption wave lengths ….. The red region has a utilization peak around 660-670 nm for Chlorophyll A and around 635-645 nm for Chlorophyll B, depending on the source of information. Plants generally make good use of all red wavelengths except for ones much longer than 670 nm. 700 nm and longer is close to useless for plants. The blue utilization peaks of chlorophyll are mostly reported to be around 430-440 nm for Chlorophyll A and around 453-470 nm for Chlorophyll B. Unlike the red peaks, the blue peaks are usually shown with substantial asymmetry indicating that wavelengths shorter than peak are used well while wavelengths longer than peak are not used well. Beta carotene is a major blue-absorbing accessory pigment, with a double peak at about 450 and 480 nm. Red Light Red Light is in the vicinity of the first peak of a plants light absorption spectrum (660nm) and it contributes to the plant photosynthesis. Red light, when combined with blue light, encourages
