Why red and blue light is best for greenhouses (supplementation)
Most commercial greenhouse growers who invest in light only invest in complementary light. Greenhouses are characterized by a high transmittance of optical radiation, therefore a lot of light reaches the plants during the day. This means that plants naturally receive the full spectrum of light from the sun (or at least which spectrum is able to pass through the glass) and even if the grower uses his lamps, the sun usually contributes significantly to the percentage of DLI (Daily Light Integral). which plants receive each month. Red and blue diodes are the most efficient and that is why it is worth supplementing plants with them.
Science confirms the fact that colors the most absorbed by plants to support photosynthesis are red and blue. This means that the remaining colors of the light will need higher light intensity to induce the same level of photosynthesis achieved by red and blue led lights. Photosynthesis is a major process in plants leading to growth and development. Using red and blue light you can be sure that the money invested in the light is better used.