deletions | additions       diff --git a/From_lab_to_field_Although__.md b/From_lab_to_field_Although__.md  index fb50f90..fbdabdf 100644  --- a/From_lab_to_field_Although__.md  +++ b/From_lab_to_field_Although__.md 
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The drawback is that it is impossible to distinguish mycorrhizal weathering actions from other weathering actions. What is possible is to create root-exclusion zones.   The study by Turpault *et al.* \cite{Marie_Pierre_2009} show a halving in Labradorite (a Ca-rich feldspar) dissolution rate in root exclusion zones. This effect diminished in plots that were previously Ca-fertilized. Apatite showed more complex dynamics. In the top soil the apatite dissolution rate is higher in the root exclusion zones, while at 20 cm depth it is the other way around. In contrast to Labradorite liming did not have a strong effect on the apatite dissolution dynamics.   Interestingly, the same dynamics of apatite dissolution rate appeared in a very different setting. Smits *et al.* \cite{Smits_2014} studied apatite loss from the soil profile in a vegetation gradient in Norway. Overall, apatite dissolution rate show a clear correlation with pH. The factor pH explained 74% of all variation in dissolution rate. The remaining variation showed in the top soil a negative correlation and at 30-40 cm depth a positive relation with fungal biomass. A possible explanation, given in \cite{Smits_2014} is that in the top soil mineral dissolution is inhibited by the adsorption of fulvic and humic acids (produced by the rhizosphere induced soil organic matter degradation). This illustrates the strong interrelationship of mineral dissolution with other soil processes.  ##Modelling