Abstract: Method and apparatus that automatically monitors the level of moisture absorbed in and adsorbed on the grain flow after the addition of a liquid conditioner. A moisture sensor is located downstream from a liquid applicator head and is capable of accurately measuring the total moisture absorbed in and adsorbed on the grain flow while said grain flow is freshly wetted. By monitoring the moisture level of the grain after the wetting process, the actual level of moisture present in the grain that has been imparted by liquid application is detectable. Therefore, the moisture detection serves as a check on the wetting process and provides adjustment capabilities rendering the conditioning process and resulting moisture contents of the grain flow more accurate than if the moisture content of the grain is detected prior to application of the liquid.