Can anyone give-me some hints on the following: (literaure references welcome): 1-Easy way of modelling root growth and water uptake in the so called functional (capacity) models 2-What is the importance of the size(depth) and number of soil compartments to be considered?; do they have to be same size necessaily? What if one wants to reproduce a situation of a soil profile with 3 layers(horizons) of different texture and size? (Eg. Horiz A-20cm; B-40cm, C-60cm), Will this be acceptable in a capacity type of model? Thanks Castro