SteveM I just finished reading the study. In my evaluation, the study does not prove that mycorrhizal fungi contributes to rooting any more than using rooting hormone alone. There was not a statistical significance analysis on the resulting numbers from the experiment, and the conclusion points out the enhanced rooting results may be obtained using rooting hormone alone.
When compared to the control, the treatment of mycorrhizal fungi alone achieved better results in all of the parameters tested, but overall was not as successful as the combined treatment or the treatment of rooting hormone alone.
However, I watched a video (at 3:00 minutes into the video) where Kristine Albrecht (KA'S dahlias) used mycorrhizal fungi on the root ball of rooted cuttings being potted up.
