Abstract: A fertilizer spike injection tool, specifically adapted with a ground-penetrating member end for forming a solid fertilizer spike-receiving cavity in the ground for tree and plant root nutrition with a tamper end adapted to set the fertilizer spike to the depth of the particularly dimensioned formed ground cavity so created by the ground forming member. The tool has a handle for placing the device on the ground, for standing operation, and a foot bar, for easing the tool into the ground using both feet.

Abstract: A tool for injecting solid fertilizer spikes into soil for tree and plant root nutrition utilizing elongated brackets to reduce the step-up height, form a fertilizer load chamber and to provide for a spring fertilizer spike retention mechanism such that the tool is fully operable in an upright position wherein a fertilizer spike is left embedded in the ground and detached from the tool without the need to remove the tool from the ground in a manner where, with one process of downward movement of the foot bar, two functions occur simultaneously, namely; the full injection of the fertilizer spike into the soil concurrent with the full release of the fertilizer spike from the tool by the complete ejection of the fertilizer spike from the fertilizer spike load chamber and the spring fertilizer spike retention mechanism.