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Effect of percent blue on leaf area index in (a) lettuce, (b) cucumber, and (c) tomato; and effect of percent green on leaf area index in (d) lettuce, (e) cucumber, and (f) tomato. * represents a significant effect of percent blue or percent green at the p < 0.05 level. See Figure 3 for the meaning of specific labels. Error bars represent normalized standard error of n = 3 replicates.
