FIGURE 1.
Relative spectral value of four treatments. (A) RB, 75% red + 25% blue LED. (B) RBG, 60% red + 20% blue + 20% green LED. (C) RBP, 60% red + 20% blue + 20% purple LED. (D) RBF, 60% red + 20% blue + 20% infrared LED.
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