In the roots of hydroponically grown wheat plants,
the Zn concentration was almost tripled with each increase
in Zn supply, and the P concentration was doubled
with each increase in P supply (Table 6). The Zn
and P treatments did not have any effects on the root
concentrations of each other. Significantly reduced Mg
concentrations were measured in the roots of both the
low-Zn and low-P plants. The low-P treatment also
lowered the root Cu concentration. However, in contrast
to Mg, Cu accumulated to higher concentrations in the
roots of the low-Zn plants as compared to the medium-
Zn and high-Zn plants. Increasing P supply had a lowering
effect on the root Mn concentrations in all Zn
treatments, and this effect was particularly pronounced
in the high-Zn treatment