Fig. 2. Light use efficiency (volume growth per unit absorbed photosynthetically active radiation (PAR)) for the eighth growth season at the Virginia (VA) and North Carolina (NC) sites and the fifth growing season at the Brazil (BR) site where the same Pinus taeda genetic entries were planted at three initial densities. Regression lines are for density main effects (a) where 618, 1236 and 1854 represent the corresponding density treatments (in trees ha−1) with the open pollinated genetic entry, and genetic entry main effects (b) (Clones 1-4 (C1–C4), MP (mass control pollinated), and OP (open pollinated)) with 1854 tree ha-1. Site was not a significant factor in the relationship. Each point represents one plot.
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