Fig 9. Simulation of the competing effects of limited light irradiance and Pi starvation on plant growth and root fraction.
Growth of the shoot (A,D) and the root (B,E), as well as the resulting root fraction (C,F) are given for six light levels between 100 and 400 μmol m-2 s-1 (I = 200 μmol m-2 s-1) at high Pi levels of 300 μM (A-C) and Pi starvation conditions at 10 μM (D-F).