A method for field processing includes mowing, via a mowing machine having at least one mower, a crop within a processing area so as to provide a mown crop. At least one mowing parameter is determined for each position of a plurality of positions within the processing area. The at least one mowing parameter has a mower parameter which relates to the at least one mower and which is associated with an area density of the crop. The mown crop is processed via a cropmaking machine which has at least one processing device. At least one cropmaking parameter which characterizes an operation of the cropmaking machine is set as a function of a position of the cropmaking machine. The at least one mowing parameter is determined for the position

The present invention relates to an agricultural haymaking machine comprising a chassis resting on the ground by at least one wheel and intended to be coupled to a tractor able to move the machine in a direction of advance, a carrier carrying a plurality of rotors being swivel mounted to the chassis around a central pin oriented transversally to the direction of advance, each rotor being driven around a respective drive axis, and a lift actuator, articulated to the chassis on one hand and to the carrier on another hand, being able to make the carrier pivot around the central pin relative to the chassis, the machine being able to adopt a headland configuration in which the carrier is raised, as well as a work configuration in which the carrier rests on the ground by means of at least one support. The central pin is rigidly attached to the carrier, and the machine comprises a positioning actuator able to move the central pin relative to the chassis to change the position of the drive axes relative to the ground.