Field sprayer for spreading liquid and/or solid active agents, comprising: - a carrier vehicle, - at least one spray boom arranged pivotably about at least one pivot axis, - at least one sensor arrangement for detecting an angular velocity of the spray boom about the pivot axis in relation to a reference plane, - at least one sensor arrangement for detecting an angular position of the spray boom about the pivot axis in relation to a reference plane, - a control unit processing output signals of the sensor arrangements to control signals, - at least one actuator influencing the present angular position of the spray boom about the pivot axis based on control signals from the control unit, - which at least one actuator is formed by at least one linear or rotary actuator operating with fluidic pressure, which provides an actuating connection between the carrier vehicle or the carrier frame and the pivotable spray boom, wherein the at least one linear or rotary actuator has respectively one active pressure side or actuating side, which is engageable by fluidic actuating pressure, for each of the two adjustment directions of the spray boom, - wherein an approximately equal pressure level and/or force level is adjustable in the active pressure sides or actuating sides, respectively, of two linear or rotary actuators operating in opposition or of a double-acting linear or rotary actuator, respectively, when the spray boom is stationary or moves only slightly in relation to the carrier vehicle or the carrier frame, - and wherein a defined differential pressure or differential force, respectively, is adjustable between the active pressure sides or actuating sides, respectively, of the two linear or rotary actuators operating in opposition or of the double-acting linear or rotary actuator, respectively, when the spray boom is shifted in relation to the carrier vehicle or the carrier frame. - wherein in phases in which no adjustment of the boom is necessary, the differential pressure or the resulting differential force is regulated approximately to zero, whereby no or no significant force is introduced into the boom; and - wherein if the driving situation of the field sprayer requires an adjustment of the boom about its axis of rotation, it is controlled to a defined differential pressure and/or differential force. - a carrier vehicle, - at least one spray boom arranged pivotably about at least one pivot axis, - at least one sensor arrangement for detecting an angular velocity of the spray boom about the pivot axis in relation to a reference plane, - at least one sensor arrangement for detecting an angular position of the spray boom about the pivot axis in relation to a reference plane, - a control unit processing output signals of the sensor arrangements to control signals, - at least one actuator influencing the present angular position of the spray boom about the pivot axis based on control signals from the control unit, - which at least one actuator is formed by at least one linear or rotary actuator operating with fluidic pressure, which provides an actuating connection between the carrier vehicle or the carrier frame and the pivotable spray boom, wherein the at least one linear or rotary actuator has respectively one active pressure side or actuating side, which is engageable by fluidic actuating pressure, for each of the two adjustment directions of the spray boom, - wherein an approximately equal pressure level and/or force level is adjustable in the active pressure sides or actuating sides, respectively, of two linear or rotary actuators operating in opposition or of a double-acting linear or rotary actuator, respectively, when the spray boom is stationary or moves only slightly in relation to the carrier vehicle or the carrier frame, - and wherein a defined differential pressure or differential force, respectively, is adjustable between the active pressure sides or actuating sides, respectively, of the two linear or rotary actuators operating in opposition or of the double-acting linear or rotary actuator, respectively, when the spray boom is shifted in relation to the carrier vehicle or the carrier frame. - wherein in phases in which no adjustment of the boom is necessary, the differential pressure or the resulting differential force is regulated approximately to zero, whereby no or no significant force is introduced into the boom; and - wherein if the driving situation of the field sprayer requires an adjustment of the boom about its axis of rotation, it is controlled to a defined differential pressure and/or differential force.