Merger control device for controlling the operation of a merger or a pick-up header, wherein the merger control device is designed to receive a steering angle from a steering angle sensor (22, 23) as an input variable, wherein the merger control device is designed, as a function of the received cornering steering angle, to generate as an output variable at least one adjusting signal for transverse conveying devices of the merger configured as belt conveyors and/or at least one adjusting signal for receiving members of the merger configured as pick-ups, to output the said adjusting signal to the transverse conveying devices and/or receiving members and to adapt the operation thereof automatically as a function of the cornering steering angle on the control side, characterized in that the merger control device generates the at least one adjusting signal for the transverse conveying devices configured as belt conveyors in such a way that the transverse conveying devices can be operated all the more slowly the larger the cornering steering angle when the conveying direction of the transverse conveying devices is oriented toward a curve centre point of the cornering and/or the merger control device generates the at least one adjusting signal for the transverse conveying devices configured as belt conveyors in such a way that the speed of the transverse conveying devices remains unchanged or the transverse conveying devices can be operated all the more quickly the greater the steering angle of the cornering when the conveying direction of the transverse conveying devices is oriented away from a curve centre point of the cornering. wherein the merger control device is designed to receive a steering angle from a steering angle sensor (22, 23) as an input variable, wherein the merger control device is designed, as a function of the received cornering steering angle, to generate as an output variable at least one adjusting signal for transverse conveying devices of the merger configured as belt conveyors and/or at least one adjusting signal for receiving members of the merger configured as pick-ups, to output the said adjusting signal to the transverse conveying devices and/or receiving members and to adapt the operation thereof automatically as a function of the cornering steering angle on the control side, characterized in that the merger control device generates the at least one adjusting signal for the transverse conveying devices configured as belt conveyors in such a way that the transverse conveying devices can be operated all the more slowly the larger the cornering steering angle when the conveying direction of the transverse conveying devices is oriented toward a curve centre point of the cornering and/or the merger control device generates the at least one adjusting signal for the transverse conveying devices configured as belt conveyors in such a way that the speed of the transverse conveying devices remains unchanged or the transverse conveying devices can be operated all the more quickly the greater the steering angle of the cornering when the conveying direction of the transverse conveying devices is oriented away from a curve centre point of the cornering.