Table 2.

Effects of sodium chloride applications on macronutrient concentrations and chlorophyll fluorescence in leaves of Italian alder growing in well drained and waterlogged compost^{^z}.

Nutrient Concentration (% leaf concentration)
Treatment	Ca	P	Mg	K	Na	Cl
Well Drained Compost
Distilled Water^{^y}	0.84	0.34	0.40	0.34	0.03	0.28
2% NaCl	0.94^**	0.36 ns^{^x}	0.41 ns	1.38 ns	0.32^**	1.06^**
4.5% NaCl	0.93^*	0.34 ns	0.40 ns	1.40^*	1.07^**	3.08^**
7% NaCl	0.88 ns	0.33 ns	0.37 ns	1.27^*	1.86^**	4.56^**
Waterlogged Compost
Waterlogged Compost (W)	0.58^**	0.17^**	0.24^**	0.78^**	0.06 ns	0.31 ns
W + 2% NaCl	0.56^**	0.18^**	0.25^**	0.88^**	0.39^**	1.40^**
W + 4.5% NaCl	0.81 ns	0.35 ns	0.38 ns	1.07^**	1.18^**	3.55^**
W + 7% NaCl	0.95^**	0.39^**	0.38 ns	1.61^**	1.66^**	4.58^**

↵z Analysis taken at day 30; n=6; Ca = calcium; P = phosphorous; Mg = magnesium; K = potassium; Na = sodium; Cl = chloride
↵y Trees growing in freely drained compost sprayed with distilled water were used as controls
↵x ns = not significant;
↵* = significant at P<0.05;
↵** = significant at P<0.01 compared to controls