For most of fruits suitable soil has following characteristics

pH                              :          6.5-7.5

Conductivity             :            

The attached document was developed in the Riverland region of South Australia, and reflects relatively sandy topsoils over carbonate rich subsoils.  The recommendations reflect the impact of these subsoils on both drainage and root penetration by different crops.  Whilst perhaps not directly applicable to your conditions, I hope it provides some useful guidance.