Abstract: A telescoping coulter system for an agricultural machine, operable on ground and having a frame and a moveable structure, includes a coulter arm, having a proximal end with a pivot point, and a distal end bearing a rotatable coulter disk. An extension mechanism connects the frame to the coulter arm, and is configured to translate the coulter arm between a raised transport position not in mechanical conflict with the moveable structure, and a lowered operational position in which the coulter disk can contact the ground and is proximate to the moveable structure.

Abstract: A tool, for mounting on a powering vehicle for transport, vertical motion and pivotal motion about a horizontal axis, provides a frame having connecting structure to interconnect with the powering vehicle. The frame carries extracting structure having plural laterally spaced extracting tines extending forwardly from the lower frame portion. At least one extracting tine has at least one depending vertical fin to increase tine strength and direct tine motion in a horizontal plane upon insertion through the earth; at least one extracting tine has at least one laterally extending horizontal fin to increase tine strength and direct tine motion in a vertical plane upon insertion through the earth; and at least one extracting tine has at least one soil retaining plate to aid support of material thereabove. The fins and plates tend to separate earth above and below the course of their insertion.