Patent ID: 7690440

Claim:
An agricultural implement for injecting material into soil, wherein the material is seed, fertilizer, or seed and fertilizer, comprising: a central frame; a plurality of elongate mounting arms, mounted to said central frame, each adapted to be moved from a raised transport position to a lowered operating position; soil engaging means mounted on each of said mounting arms, adapted to engage soil when each of said mounting arms is in said operating position; material dispensing means on each of said mounting arms proximate said soil engaging means for dispensing said material into the soil; further comprising: material metering means in communication with said material dispensing means, adapted to regulate and meter said material to said material dispensing means; means for preventing flow of said material to selected of said material dispensing means during operation of said implement, wherein said means for preventing flow of said material to selected of said material dispensing means is responsive to input from received from a GPS or GNSS satellite navigation system which provides input to said means for preventing flow upon detection of regions of soil which have been previously traversed by said agricultural implement and injected with said material; and means for automated raising to said raised position selected of said mounting arms for which said flow of material to said material dispensing means thereon has been prevented due to said GPS or GNSS satellite navigation system having determined regions of soil which have been previously traversed by said agricultural implement and injected with said material.