Recently new IT products allow traditional soil moisture meters to update to the internet to give reports in “real time”.
The report to the right is an example of how soil moisture is depleted from the rootzone of an established cotton crop. Note that root depth can be estimated by the zone of water depletion in that area. For example, the 32 inch sensor began to show water just prior to the last irrigation on July 15th. We can assume that the roots are now in the vicinity of that sensor. http://www.aquaspy.com/Home.aspx