FIGURE 1.

Schematic view of experimental setup. Diagram of the hydroponic grown maize plants with four distinct Mg treatments. Mg+, 0.5 mM MgSO₄ in nutrient solution (NS); Mg-, 0.01 mM MgSO₄ in NS; Mg–/+, 0.01 mM MgSO₄ in NS for 5 weeks and 0.5 mM MgSO₄ in NS for 3 weeks; Mg–/LA, 0.01 mM MgSO₄ in NS and leaf-application of 200 mM MgSO₄ for four times. For each treatment group four pots with four maize plants each were installed (only one plant per pot displayed in the simplified diagram). For further details see descriptions in the text (Materials and Methods).