Baler preservative application system having auger sleeves for changing auger diameter

A baler having a pickup assembly for collecting plant material and directing the plant material to a baling chamber and a particulate additive applicator configured to add a preservative additive to the plant material, the particulate additive applicator comprising:

• a hopper configured to hold a supply of particulate additive;
• an auger housing in communication with the hopper, the auger housing having a passageway leading from the hopper to a housing mouth;
• a first sleeve configured to be inserted into the passageway, the sleeve having a bore extending through the first sleeve;
• a first auger configured to be received in the bore of the sleeve and rotatable such that auger flighting having a first flighting diameter interfaces with the sleeve to deliver particulate additive from the hopper through the auger housing to the auger mouth, the first auger used to control a first rate of dispensing the particulate additive from the particulate additive applicator when the first auger is inserted into the auger housing;
• a second sleeve configured to be inserted into the passageway, the sleeve having a bore extending through the second sleeve;
• a second auger configured to be received in the bore of the second sleeve and rotatable such that auger flighting having a second flighting diameter smaller than the first flighting diameter interfaces with the second sleeve to deliver particulate additive from the hopper through the auger housing to the auger mouth, the second auger used to control a second rate of dispensing the particulate additive from the particulate additive applicator when the second auger is inserted into the auger housing, the second rate being smaller than the first rate, wherein an operator may select between the first sleeve and first auger or the second sleeve and second auger to control the rate of application of the preservative additive to the plant material in the baler.