A device and method for tracking and marking bailed forage material is provided. Predetermined parameters are measured as the forage material enters the intake of a processing machine and prior to the forage material being transferred to a baling chamber of the machine. As the forage material passes through the machine, the locations of discrete portions or flakes of the forage material are linearly tracked so that each portion may receive pre-selected markings indicative of measured parameters of each portion. A plurality of sensor stations is incorporated within the machine to track the locations of the portions of material. After the forage material is baled, a marking station generates markings applied to each bale which corresponds to the measured parameters for the corresponding discrete portions. Observed parameters may include moisture content, volume, density, temperature, nutritional content, an amount and type of conditioning inoculant applied to each flake, among others. Multiple markings can be applied to each bale to indicate moisture content for selected portions of the bale since moisture content may differ between flakes in the bale.