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Figure 2


Percentages of mycorrhizal seedlings (A) and mycorrhizal colonization index (B) on P. halepensis inoculated with three ectomycorrhizal fungi under different N fertilization sources (ammonium nitrate-NH4NO3, ammonium-(NH4)2SO4, nitrate-HNO3). For each inoculation treatment, different letters indicate significant differences (Contingency tables for percentage of mycorrhizal seedlings, Duncan’s test, p ≤ 0.05 for mycorrhizal colonization).

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