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Two major effects of 730nm far-red LED on plants

553 Published by admin Jan 07,2021

Two major effects of 730nm far-red LED on plants

1. 730nm far-red light's shade avoidance effect One of the most important effects of 730nm far-red light illumination on plants is shade avoidance (Figure 3). Two major effects of 730nm far-red LED on plants If the plant is only irradiated by the deep red light of 660nm, the plant will feel that it is under direct sunlight and grow normally. And if the plant is mainly irradiated by the far-red light of 730nm, the plant will feel as if it is blocked by another taller plant from the direct light of the sun, so the plant will grow harder to break through the obscuration. Helping plants grow taller, but it does not necessarily mean there will be more biomass (bio mass). 2. Flower inducing effect of 730 nm far-red light Another important role of 730nm far-red light in horticultural lighting applications is that the flowering cycle can be controlled by 660nm and 730nm lighting, without relying only on the influence of seasons, which has important value for ornamental flowers. The conversion of the phytochrome Pr to Pfr is mainly induced by the deep red light of 660nm (representing the sunlight during the day), while the conversion of Pfr to Pr usually occurs naturally at night, and it can also be excited by 730nm far-red light, as shown in the figure 4 shown. 730nm far-red LED lights

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