Evaluating the Feasibility of Variable Rate Application of Nitrogen in Georgia

In this study, we evaluated the use of variable rate application of nitrogen (N) in Georgia using a GreenSeeker^®  RT-200 sensor system mounted on a UGA-owned high clearance tractor.  We established a series of 48 large replicated plots (each 100 ft long x 4 rows wide) with 6 supplemental N treatments.  The GreenSeeker system was used to collect NDVI data weekly.  In addition, tissue samples and biomass samples were collected at regular intervals.  With the results, we will develop a relationship between NDVI and N rates under Georgia conditions.  This information can be used in the future for real-time sense and treat supplemental N management.