MARSHAL was developed at the Université catholique de Louvain, in the Earth and Life Insititute, in the lab of Mathieu Javaux...
The conductivities of the different root type: Kr [cm.hPa-1.d-1] and Kx [cm4.hPa-1.d-1] along the root. The evolution of the conductance is based on the distance from the tip. To calculate other conductivities with the help of another model: MECHA