Table 7.

Effect of salinity (0, 50, 100, and 150 mM NaCl) and foliar applications (no-foliar, KNO₃, glucose, and Dobogen) on the mineral content of Tanacetum balsamita plants grown hydroponically in perlite.

Source of variation	df	Na+	K+	K+/ Na+ ratio	Si	Mn2+	Zn2+	Fe2+	Mg2+	Ca2+
		Mean square	Mean square	Mean square	Mean square	Mean square	Mean square	Mean square	Mean square	Mean square
Salinity (S)	3	6.718**	13.023**	6.532**	21.797**	125.688**	330.667**	340.982**	0.007**	1.096 ns
Foliar (F)	3	0.535**	4.773**	1.343**	6.284*	226.949**	433.949**	429.511**	0.003**	3.082**
S × F	9	0.152**	4.118**	0.371**	9.369**	53.760**	100.005**	78.106*	0.001**	1.103**
Error		0.20	0.237	0.052	1.964	9.064	26.531	15.486	0.0001	0.706

df, degree of freedom; Na, Sodium; K, Potassium; Si, Silicon; Mn, Manganese; Zn, Zinc; Fe, Iron; Mg, Magnesium; Ca, Calcium; ns, non-significant.

*Significant difference at P ≤ 5% and **Significant difference at P ≤ 1%, following two-way ANOVA.