All three PCTspecies studied showed clear positive growth
responses to inoculation with diverse AM fungi. The highest
variability within treatments existed for H. americanus,probably
caused by seedlings taken from the seedbed in an early,
fragile stage, which also caused very high mortality. In gener-
al, the biomass production was significantly higher in the mycorrhizal
treatments when compared to the corresponding
controls (CTRL, LF−AMF). Both mycorrhizal treatments also
outperformed the full fertilization treatment (FF). Within a
treatment, no clear differences in growth response could be
observed among inoculation with different AM fungi.
Sometimes certain AM fungi caused better growth, e.g., the
belowground biomass of H. chrysanthus was increased by Ri
and Ac, but there were also some differences within the control
treatments indicating a certain level of experimental error.
It may be noted that plants inoculated with Ac always
belonged to those with highest biomass, SL, RCD, and LTA
in the different treatments
All three PCTspecies studied showed clear positive growthresponses to inoculation with diverse AM fungi. The highestvariability within treatments existed for H. americanus,probablycaused by seedlings taken from the seedbed in an early,fragile stage, which also caused very high mortality. In gener-al, the biomass production was significantly higher in the mycorrhizaltreatments when compared to the correspondingcontrols (CTRL, LF−AMF). Both mycorrhizal treatments alsooutperformed the full fertilization treatment (FF). Within atreatment, no clear differences in growth response could beobserved among inoculation with different AM fungi.Sometimes certain AM fungi caused better growth, e.g., thebelowground biomass of H. chrysanthus was increased by Riand Ac, but there were also some differences within the controltreatments indicating a certain level of experimental error.It may be noted that plants inoculated with Ac alwaysbelonged to those with highest biomass, SL, RCD, and LTAin the different treatments
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