An agricultural implement includes: a frame； a location sensor coupled to the frame； a plurality of shank assemblies carried by the frame that each include a shank and a trip sensor associated with the shank； and a controller operatively coupled to a memory storing a field map therein, the location sensor, and the trip sensor of each of the shank assemblies. The controller receives an output trip signal from a trip sensor； determines a specific shank associated with the trip sensor that output the trip signal； determines a separation distance between the specific shank and a reference； determines a current location based on a current location signal from the location sensor； determines a field object location based on the determined separation distance and the determined current location； and outputs an update signal to the memory to designate the field object location on the stored field map.
