A planning system for planning fieldwork for an agricultural working machine includes a display unit and a data processing unit for processing field-specific data. The data processing unit is programmed to derive at least one reference object from the field-specific data by use an algorithm stored in the data processing unit and to display the at least one reference object on the display unit. At least one reference object is selectable as input information for a working plan for a field by an operator of the planning system. On a basis of the selected at least one reference object, a working plan for the agricultural working machine is created.
