48 this configuration allows the fertilizer feed tube shoe 40 to maintain its substantially horizontal orientation but pivot upward in the event of an over load condition i e contact with a stone or clod thereby preventing catastrophic failure the spring loaded fertilizer feed shoe 40 has a generally low profile to minimize soil disruption with a length that is substantially greater than its width and height in the preferred embodiment the fertilizer feed shoe 40 is six inches long when paired with a disc 10 having a fourteen inch diameter the fertilizer feed shoe 40 has both an active inner and outer surface the inner surface is substantially flat and is biased against the disc 10 to act as a disc scraper the fertilizer feed tube shoe furrow control edge 45 forms the outer surface of the fertilizer feed tube shoe 40 and has an arcuate surface with a decreasing radius which ends as a straight edge providing the fertilizer feed tube shoe 40 with a knife like edge to engage the lower inside portion of the furrow the fertilizer feed tube shoe furrow control edge 45 is substantially horizontal during soil engagement fertilizer feed shoe soil engagement tip 42 forms the outer portion of the fertilizer feed tube shoe furrow.