Rotary mower for applying chemicals to vegetation

A method of applying a chemical with a rotary mower that includes a mower deck adapted for movement along the ground, a blade pan under the mower deck mounted to a driven shaft extending down through the mower deck, and a plurality of blades attached to the blade pan, the method comprising:

• attaching a slinger ring to a top surface of the blade pan such that a center of the slinger ring substantially coincides with a rotational axis of the driven shaft, and such that a bottom edge of the slinger ring is substantially sealed to the top surface of the blade pan;
• wherein the slinger ring slopes upward and inward toward the center thereof from the bottom edge thereof to the top edge thereof;
• providing a plurality of discharge ports extending through the blade pan at spaced apart locations adjacent to and inside the slinger ring;
• fixing a conduit to the mower deck and orienting the conduit to direct chemical onto the top surface of the blade pan inside the slinger ring;
• and
• rotating the driven shaft and blade pan and delivering chemical through the conduit onto the top surface of the blade pan inside the slinger ring such that centrifugal force moves the chemical along the top surface of the blade pan to the slinger ring and then out through the discharge ports.