Mycorrhization, growth and nutrition of Pinus halepensis seedlings fertilized with different doses and sources of nitrogen

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Table II

Nutrient concentration in needles of P. halepensis seedlings inoculated with three ectomycorrhizal fungi under different N fertilization levels (low-LN: 35 mg/plant, medium-MN: 60 mg/plant, high-HN: 120 mg/plant). For each inoculation treatment, different letters indicate significant differences (Duncan’s test, p ≤ 0.05).

Inoculation	N	N	P	K
	dose	(%)	(%)	(%)
P. tinctorius 3SR
	LN	1.11 ± 0.04 a	0.14 ± 0.05 a	0.83 ± 0.05 a
	MN	0.93 ± 0.03 a	0.13 ± 0.08 a	0.81 ± 0.03 ab
	HN	1.00 ± 0.04 a	0.10 ± 0.03 a	0.70 ± 0.06 b
P. tinctorius Mx
	LN	1.05 ± 0.02 a	0.13 ± 0.04 a	0.84 ± 0.03 a
	MN	0.98 ± 0.01 a	0.11 ± 0.03 a	0.67 ± 0.08 a
	HN	1.10 ± 0.04 a	0.12 ± 0.04 a	0.70 ± 0.04 a
L. deliciosus
	LN	0.99 ± 0.01 a	0.11 ± 0.02 a	0.71 ± 0.06 a
	MN	0.92 ± 0.02 a	0.11 ± 0.01 a	0.61 ± 0.05 a
	HN	1.03 ± 0.03 a	0.12 ± 0.01 a	0.65 ± 0.05 a
Uninoculated
	LN	1.04 ± 0.01 a	0.13 ± 0.02 a	0.78 ± 0.07 a
	MN	0.95 ± 0.02 a	0.12 ± 0.01 a	0.69 ± 0.04 a
	HN	1.07 ± 0.02 a	0.11 ± 0.02 a	0.71 ± 0.03 a
ANOVA significance^∗
Inoculation		ns	ns	^∗∗
N dose fertilization		ns	ns	^∗∗
I × F		ns	ns	ns

^∗

Summary of the ANOVA of the effects of inoculation (I), N dose fertilization (F) and their interactions;

^∗∗

significant at p < 0.05;

ns: non-significant.