Patent ID: 8676451

Claim:
An apparatus for spraying a treatment liquid onto a grass growing on a ground surface, the apparatus adapted for movement forwardly along a path of travel and to cut holes in the ground surface, the apparatus comprising: a plurality of rotatable discs spaced laterally apart across the path of travel, each disc having a plurality of cutters thereon, the cutters being adapted to penetrate the ground surface and to cut the holes therein as the apparatus travels forwardly and the cutters contact the ground surface, the cutters being adapted to cut the holes such that the holes are spaced apart along the path of travel and also spaced apart laterally, a plurality of nozzles positioned on the apparatus above the grass such that each nozzle is spaced rearwardly along the path of travel from an associated one of the rotatable discs but is aligned along the path of travel with such disc, the nozzles being adapted to spray the treatment liquid, and a controller for causing the nozzles to spray the treatment liquid into the holes.