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. 2019 Jun 12;10:784. doi: 10.3389/fpls.2019.00784

FIGURE 8.

FIGURE 8

Schematic of a proposed model showing the source-sink carbon partitioning and phosphorus recycling relating to the grain yield in maize under low vs. high phosphorus supply. C, carbon; P, phosphorus; Porg, organic P; Pi, inorganic P.