Table 4.
The molar ratios of NA:Cu, NA:Fe, NA:Zn and NA:Mn in cucumber leaves. Plants were harvested after 5 days of treatment with excess Cu (Cu), excess Cu and Si supply (Cu + Si), excess Cu and additional Fe supply (Cu + Fe) or combined excess Cu and additional Fe and Si supply (Cu + Fe + Si); control plants (C) remained untreated.
| Treatment | NA:Cu | NA:Fe | NA:Zn | NA:Mn |
|---|---|---|---|---|
| C | 3.8:1 | 0.4:1 | 0.6:1 | 0.9:1 |
| Cu | 2.2:1 | 1.1:1 | 1.5:1 | 2.6:1 |
| Cu + Si | 5.4:1 | 1.8:1 | 2.6:1 | 4.7:1 |
| Cu + Fe | 2.2:1 | 0.3:1 | 0.6:1 | 0.9:1 |
| Cu + Fe + Si | 3.4:1 | 0.4:1 | 0.8:1 | 1.2:1 1 |
1 The values are means of four replicates.