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##Mineral incubations  As mineral weathering is a slow process, in order to quantify weathering rates the minerals should be either incubated for a long time or the mineral Long-term soil incubation of minerals in mesh-bags is a different approach to study mineral weathering.  This The application of this  type of studies has been experiments is  reviewed by Gobran *et al.* \cite{Gobran_2005}. Not included in that review is a more recent study by Turpault et al \cite{Marie_Pierre_2009}.   strong advantage of the incubation approach, compared to microcosm experiments is that weathering rates are measured under real soil conditions.   he 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.