Fig. 6. Ratio of red/far-red light at the base of the plant canopy. Top: red/far-red light ratio at three plant spacings averaged across locations, two orchardgrass cultivars, three replications, and two radii per replicate. Bottom: red/far-red light ratio at three sites averaged across two orchardgrass cultivars, three plant spacings, three replications, and two radii per replicate. Bars indicate one standard error.

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