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All issues Volume 67 / No 4 (June 2010) Ann. For. Sci., 67 4 (2010) 405 Full HTML
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Table III

Plant growth parameters on P. halepensis seedlings inoculated with three ectomycorrhizal fungi under different N fertilization sources (ammonium nitrate-NH4NO3,ammonium-(NH4)2SO4, nitrate-HNO3). For each inoculation treatment, different minor letters indicate significant differences among fertilizations; For each N source, different capital letters indicate significant differences among inoculation treatments (Duncan’s test, p ≤ 0.05).

Inoculation N Height Diameter Branches Shoot dry weight Root dry weight Sdw/Rdw
source (cm) (mm) (No.) (g) (g)
P. tinctorius 3SR
NH4NO3 11.8 ± 1.7 b A 3.0 ± 0.1 a A 8.9 ± 0.9 b B 2.2 ± 0.5 a A 1.9 ± 0.5 a A 1.1 ± 0.2 a A
(NH4)2SO4 15.5 ± 1.3 a A 3.0 ± 0.2 a A 11.2 ± 1.0 a A 2.2 ± 0.6 a A 2.1 ± 0.9 a A 1.1 ± 0.2 a A
HNO3 13.8 ± 1.6 b A 2.8 ± 0.2 b A 9.7 ± 1.1 b A 1.9 ± 0.5 a A 1.8 ± 0.5 a B 1.1 ± 0.3 a A
L. deliciosus
NH4NO3 13.2 ± 1.9 a A 3.1 ± 0.5 a A 10.3 ± 1.0 a A 2.2 ± 0.9 a A 1.8 ± 0.7 a A 1.3 ± 0.4 a A
(NH4)2SO4 13.8 ± 1.8 a B 2.9 ± 0.7 a A 10.1 ± 0.9 a A 2.0 ± 0.4 a B 1.8 ± 0.3 a B 1.1 ± 0.5 a A
HNO3 12.7 ± 1.5 a A 2.9 ± 0.3 a A 10.1 ± 0.8 a A 1.8 ± 0.6 a A 1.7 ± 0.3 a B 1.1 ± 0.3 a A
Uninoculated
NH4NO3 11.6 ± 1.3 b A 3.0 ± 0.3 a A 8.3 ± 0.8 b B 1.9 ± 0.7 b B 1.8 ± 0.4 b A 1.1 ± 0.3 a A
(NH4)2SO4 16.6 ± 2.1 a A 3.1 ± 0.4 a A 11.1 ± 1.1 a A 2.4 ± 0.9 a A 2.2 ± 0.2 a A 1.2 ± 0.2 a A
HNO3 15.0 ± 1.9 a B 3.0 ± 0.1 a A 10.0 ± 0.9 ab A 2.1 ± 0.3 b A 2.0 ± 0.5 b A 1.1 ± 0.4 a A
ANOVA significance∗
Inoculation ns ns ns ns ∗∗ ns
N source fertilization ∗∗ ∗∗ ∗∗ ns ∗∗ ns
I × F ∗∗ ns ns ∗∗ ns ns
∗

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

∗∗

significant at p < 0.05;

ns: non-significant.