1. In a one-way type cultivating implement which includes a frame and a gang of cultivating elements therebehind, a steerable furrow wheel pivotally mounted at the leading end of said frame, a rudder beam pivoted to the trailing end of the frame, a steerable land wheel pivotally mounted on said rudder beam, a spring reacting between said rudder beam and said land wheel for biasing the latter in one steering direction, and means operatively connecting said furrow wheel to said land wheel for turning the latter in the opposite steering direction against the bias of said spring, said connecting means comprising a crank arm movable with said furrow wheel, a second crank arm movable with said land wheel, a guide provided at the leading end of said frame, a second guide provided at the trailing end of the frame adjacent the pivot point of said rudder beam to the frame, and a stretch of cable extending from the crank arm of the furrow wheel around the first mentioned guide, along the length of the frame, around the second guide and to the crank arm of the land wheel, whereby turning movement of the furrow wheel in said opposite steering direction may be transmitted by said cable to produce a corresponding movement of the land wheel against the bias of said spring.