Abstract: A planter row unit is positioned so a gauge wheel and an opener are in a known position relative to one another. A planting depth actuator that travels along an extent of travel to change a relationship between the gauge wheel and opener is positioned at one end of its extent of travel, out of engagement with a gauge wheel arm and is then moved to an engagement position where it engages the gauge wheel arm. The location of the engagement position is identified as a calibration point.

Abstract: In one embodiment, a method for mapping foreign objects in a field is provided. The method comprising the steps of: traversing the field with an agricultural implement having an attachment, the attachment configured for at least one of penetrating into the soil of the field or running along on the soil; detecting, using a sensor associated with the attachment, a change of position of the attachment; determining, with a processor, whether the change of position of the attachment indicates interaction with a foreign object lying in the field; generating a position of the detected foreign object using a position determining system; and storing the generated position of the detected foreign object.

Abstract: A planter row unit is positioned so a gauge wheel and an opener are in a known position relative to one another. A planting depth actuator that travels along an extent of travel to change a relationship between the gauge wheel and opener is positioned at one end of its extent of travel, out of engagement with a gauge wheel arm and is then moved to an engagement position where it engages the gauge wheel arm. The location of the engagement position is identified as a calibration point.