A harvesting system includes at least one modular unit coupled to a harvester includes a drying unit to dry a harvested material introduced into the harvester including at least one rotating drum, a number of appendages extending from the at least one rotating drum, at least one sensor to determine at least one environmental state within the drying unit, and at least one environmental state adjustment device to adjust at least one environmental attribute within the drying unit. The modular unit also includes a collection unit to collect the harvested material into a unit, a first conveyor mechanism to convey the harvested material from the drying unit to the collection unit, and a control system to control at least the harvester, the drying unit, the collection unit, the first conveyor mechanism, the sensor, and the environmental state adjustment device based on a signal received from the at least one sensor.