Patent ID: 7568439

Claim:
Fertilizer placement structure for an agricultural implement adapted for movement in a forward direction through the soil, the fertilizer placement structure comprising a replaceable point adapted for attachment to a lower end of an upright fertilizer knife member, the replaceable point including: a lowermost leading lift surface having a leading edge for penetrating the soil, the lift surface extending rearwardly from the leading edge and having generally parallel lift surface sides terminating in aft rearwardly facing surfaces, the lift surface initially lifting the penetrated soil; opposed rearwardly diverging soil shattering surfaces projecting upwardly from the lift surface adjacent the leading edge, the shattering surfaces intercepting the penetrated soil lifted by the lift surface and defining a first soil shattering zone; opposed upwardly and outwardly facing surfaces extending rearwardly and upwardly from aft portions of the soil shattering surfaces, the upwardly and outwardly facing surfaces intercepting soil flow off of the shattering surfaces; fins extending rearwardly and downwardly from the opposed upwardly and outwardly facing surfaces, the soil flow off of the shattering surfaces dropping downwardly off the fins to further shatter the soil; and wherein the point includes a non-welded knife attaching portion located adjacent the lowermost leading lift surface facilitating removal of the point from the knife member without need to replace the knife member.