GPS Zone-Based Variable Rate Nitrogen Fertilizer CIG Project

Conduct in cooperation with Cloverfield Enterprises in Essex County, VA a series of field-scale demonstration and evaluation plots comparing variable rate (i.e., multiple rates within one field) injection sidedress N fertilizer application to corn to traditional “flat rate” (i.e., one rate across the field) injection application. The primary technology to be evaluated will vary application rates according to GPS-delineated zones with boundaries defined by soil type and/or yield history. Side-by-side variable rate vs. flat rate comparisons will be made on a total of at least six different demonstration plots with minimum size 25 acres during the life of the project. A minimum of two of these plots will also integrate a third comparison – variable rate N application based on the GreenSeeker™ sensor system.