Table 2

Results of GeoChem-EZ analysis of nutrients solutions in Table1
Free Activity (−log)
Ion 1/2x 1/2 High 1/2x -N 1/2x High -N
Mg 4.176 4.177 4.16 4.16
Fe +2 5.902 5.818 5.894 5.822
Mn +2 6.189 5.801 6.178 5.79
Na 4.337 4.304 4.331 4.299
Zn 9.847 7.552 9.838 7.551
Cu +2 12.691 12.106 12.682 12.105
Co +2 11.09 10.506 11.081 10.505
Ca 3.563 3.563 3.546 3.545
K 2.378 2.378 2.372 2.372
EDTA 14.984 15.571 14.968 15.547
B(OH)4 7.522 7.522 7.521 7.521
Cl 3.044 3.044 3.038 3.038
SO4 3.585 3.568 3.565 3.547
MoO4 6.478 6.478 6.455 6.455
NH3 5.146 5.146 -- --
NO3 2.646 2.646 -- --
PO4 9.273 9.275 9.266 9.268

Activities are estimated -log free activity. Zn and EDTA are in bold because concentrations of these compounds were altered to achieve sufficient Zn and excess Zn.

Lewis et al.

Lewis et al. BMC Research Notes 2012 5:657   doi:10.1186/1756-0500-5-657

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