Appendix: Supplementary Table

Appendix: Supplementary table

Supplementarytable. Effect of soil organic matter (unmodified – SOM0 and increased – SOM1), saline irrigation water (0, 50 and 100 mM NaCl), Cu treatment (0, 250 and 500 mg kg-1) and their interactions on saturated soil water extract element concentrations (g kg-1 and mg kg-1, respectively).

Treatment / Na+ / K+ / Ca2+ / Mg2+ / HCO3- / Cl- / NO3- / NH4+ / SO42- / P
g L-1 / mg L-1
SOM0 / 1.4a / 0.15b / 1.27a / 0.18a / 0.25b / 2.28a / 3a / 4.7a / 58b / 0.6b
SOM1 / 1.5a / 0.17a / 1.3a / 0.2a / 0.3a / 2.82a / 3a / 5.4a / 117a / 0.81a
NaCl0 / 0.09c / 0.12c / 1.04c / 0.17a / 0.26a / 0.2c / 3.4a / 4.4a / 109a / 0.62b
NaCl50 / 1.5b / 0.17b / 1.35b / 0.2a / 0.28a / 3.3b / 2.9b / 5.1a / 87b / 0.67b
NaCl100 / 2.8a / 0.19a / 1.48a / 0.2a / 0.29a / 4.9a / 2.7c / 5.6a / 67c / 0.83a
Cu0 / 1.6a / 0.17a / 1.25a / 0.2a / 0.28a / 3.1a / 2.9b / 5.7a / 94a / 0.81a
Cu250 / 1.4b / 0.15b / 1.27a / 0.18a / 0.27a / 2.7b / 2.8b / 4.9a / 84a / 0.62b
Cu500 / 1.3c / 0.15b / 1.34a / 0.18a / 0.27a / 2.5c / 3.2a / 4.5a / 85a / 0.69b
Interactions
SOM*NaCl*Cu / n.s. / n.s. / n.s. / n.s. / n.s. / n.s. / n.s. / n.s. / n.s. / n.s.
SOM*NaCl / n.s. / n.s. / P<0.05 / n.s. / n.s. / n.s. / n.s. / n.s. / n.s. / n.s.
SOM*Cu / n.s. / n.s. / n.s. / n.s. / n.s. / n.s. / n.s. / n.s. / n.s. / n.s.
NaCl*Cu / P<0.05 / P<0.01 / n.s. / n.s. / n.s. / P<0.01 / n.s. / n.s. / n.s. / n.s.
Means with the same letter are not significantly different at P0.05; n.s.: non–significant interaction.