An agricultural tillage implement and method for adjusting the angle of smoothing tools of a harrow according to a present geographic location are disclosed. The agricultural tillage implement includes a main implement frame and a soil finish system having the harrow support in a trailing position with respect to the main implement frame for smoothing the soil tilled by ground-engaging tillage tools. A control system is configured to actuate a hydraulic system to define the angle of a first set of ground-engaging tillage tools in response to the percentage of plant residue at the present geographic location according to a stored electronic map.