An agricultural apparatus (10), comprising a support frame (2) on which at least a work tool (30) is installed, which work tool (30) has a rotation axis (A) which is horizontal and suitable for coming into contact with a ground terrain such as to carry out a work operation, at least a wheel (6), which is supported idle by a support arm (7) rotatably associated to the support frame (2) and mobile between a lowered position in which the wheel (6) is resting on the ground and a raised position in which it is raised from the ground. The peculiarity of the invention consists in the fact that the rotation axis (B) of the support arm (7) with respect to the support frame (2) lies on a plane that is perpendicular to the rotation axis (A) of the work tool (30).