Abstract: An apparatus for fertilizing soil includes a frame, a fertilizer storage canister and an earth drilling assembly which is movable relative to the frame and has a fluted, substantially vertical auger element. According to one aspect of the invention, a guide tube is provided to perform the dual function of guiding the auger element during drilling and guiding fertilizer into the hole once the auger element has been withdrawn. A second aspect of the invention regards a pre-measuring device which meters a predetermined amount of fertilizer into the guide tube upon actuation by an operator.