A linkage system for mounting an implement to a vehicle, the linkage system comprising: a mounting device comprising a support frame and an implement mounting frame, the support frame comprising a vehicle-facing side, an implement facing side and a top support, the implement mounting frame attached on the implement facing side of the support frame for mounting the implement; a hitch link attachment configured to be coupled to the vehicle; characterised by a stabilisation system attached on the vehicle-facing side of the support frame, the stabilisation system comprising at least two stabilising links; and wherein the stabilisation system is configured for coupling between the top support of the support frame of the mounting device and the hitch link attachment via the least two stabilising links.

A method for determining output data from crop plant characteristics for a crop plant comprising, in a data processing system: providing measurement data detected for a crop plant; determining model data representing a three dimensional model of the crop plant from the measurement data; segmenting the three dimensional model; determining first crop plant characteristics for a first subpart of the crop plant provided in a first three dimensional segment; and providing output data at an output device. The output data comprise at least one of the following: media data; and operation control data indicative of operation control signals for controlling operating of an agricultural machine working on the crop plant, the operation control signals comprising first operation control signals determined from the first crop plant characteristics and configured to control operation of the agricultural machine for applying an agricultural treatment to the first subpart of the crop plant.

A method for determining output data from crop plant characteristics for a crop plant comprising, in a data processing system: providing measurement data detected for a crop plant; determining model data representing a three dimensional model of the crop plant from the measurement data; segmenting the three dimensional model; determining first crop plant characteristics for a first subpart of the crop plant provided in a first three dimensional segment; and providing output data at an output device. The output data comprise at least one of the following: media data; and operation control data indicative of operation control signals for controlling operating of an agricultural machine working on the crop plant, the operation control signals comprising first operation control signals determined from the first crop plant characteristics and configured to control operation of the agricultural machine for applying an agricultural treatment to the first subpart of the crop plant.

A hand-held drive apparatus comprises an apparatus main body including a pruner and a handle rotatably connected to the apparatus main body and including a rotation lock mechanism and a drive operation mechanism. The rotation lock mechanism includes a rotation lock lever movable to a rotation prevention position where the handle is prevented from rotating, and to a rotation allowance position where the handle is allowed to rotate. The drive operation mechanism includes a switch configured to control activation of the pruner and a throttle lever movable to a contact position where the throttle lever pushes the switch and to a non-contact position where the throttle lever is separated from the switch. The throttle lever contacts the rotation lock lever at the rotation allowance position to maintain the non-contact position, and is, when the rotation lock lever is at the rotation prevention position, allowed to move to the contact position.