Dynamic VRI

An example of how dynamic VRI could appear on a “dashboard” for farmers to schedule  when ,  where , and  how much  to irrigate.

An example of how dynamic VRI could appear on a “dashboard” for farmers to schedule when, where, and how much to irrigate.

smart irrigation tools

Advanced irrigation scheduling is a method of analyzing real-time field data to optimize irrigation application decisions. Irrigation scheduling helps determine when to irrigate and how much water to apply.

Variable Rate Irrigation (VRI) is a tool of precision agriculture that optimizes irrigation water application. The center pivot system is equipped to control irrigation application with GPS guidance by span or individual sprinkler. 


Irrigation Management Zones are delineated based on soil types, topography, hydrology, and other features.
With VRI, the center pivot applies varying amounts of water across the irrigation management zones to address variations in the field, helping farmers determine where to irrigate. (Example maps with delineated irrigation management zones pictured above and below). 

Dynamic VRI combines all of the above elements into a precision irrigation system that utilizes real-time field data to apply the needed amount of water at the right time in the right location for optimal crop growth and development. 


Standard VRI maps are static, meaning that the irrigation management zones and water application rates are uploaded to the irrigation system infrequently. Dynamic VRI enables the farmer to utilize real-time soil moisture data to update water application rates by zone for each irrigation application.

Research conducted through a UGA & Flint river swcd project has shown that the integration of dynamic VRI technology can increase irrigation water use efficiency by up to 40%.