Does CRI really affect how the plant grows in case...

CRI is a lights’ ability to accurately render all frequencies of color spectrums in comparison with natural sun light. It is helpful in comparing one LED light to another. Items placed under high CRI lights will look the same as they do outside under sun light, whereas the same objects placed under low CRI lights will appear unnatural and dull. CRI is rated on a scale from 1 to 100 with natural sunlight taken as baseline with a value of 100. The higher the CRI value, the greater the color rendering ability and better plant growth. Light sources with good LED quality render CRI close to natural sunlight i.e 100. They offer wide spectral distribution of all wavelengths with high level of color rendering. For instance, conventional bulbs like CFL or halogen emit white light but are not equivalent to LEDs in color quality. For this reason, they are not as effective as LEDs for growing plants. Quality LEDs offer high CRI with different CCT values suitable to the various cultivation needs. Based on the stage of cultivation, LEDs can be tailored to specific color spectral outputs to produce better yields. CCT (Correlated Color Temperature) Color temperature describes the warmth or coolness of a light source in degrees Kelvin. White light is a combination of different color spectrums. Not all with light is created equal, white LED lights do not emit light energy at all wavelengths equally. At low color temperatures, the light will be more yellow but as the temperature Kelvin increases, the spectrum shifts from red and yellow tinted white, to more bluish white. The ability to perceive colors naturally under different light sources depends on the spectral make-up of a light source. LEDs offer full spectrum including warm white (lower color temperatures), neutral white (3750-5000 K) and cool white (Above 5000 K). LED lights above 5000 Kelvin are often more blueish and closely resemble natural sunlight. For growing plants, full spectrum LEDs with accurate rendering of colors is required because each spectrum initiates different responses from the plants.