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. 2019 Nov 28;8(12):554. doi: 10.3390/plants8120554

Table 3.

Molar ratios of Fe:Cu, Zn:Cu and Mn:Cu 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 Fe:Cu Zn:Cu Mn:Cu
C 10:1 7:1 4:1
Cu 2:1 1:1 1:1
Cu + Si 3:1 2:1 1:1
Cu + Fe 7:1 4:1 2:1
Cu + Fe + Si 8:1 4:1 3:1 1

1 The values are means of four replicates.