This application would typically be used by hay baler operators who add a liquid preservative to their hay at the pickup section of their hay baler. The App is designed to provide the hay baler operator with what size nozzle (determined internationally by the color) and at what pressure to operate that color nozzle(s) to accurately add the correct amount of preservative. The information about the operating condition and dose rate entered into the Application's options screen and the moisture and tons per hour (TPH) in the main screen will determine the nozzle color and pressure.