An agricultural machine for performing a cultivation operation on a field with plants in a regular, non-square pattern, in parallel, linear rows with a first transverse distance between adjacent rows in a first direction being smaller than a second transverse distance between adjacent rows in a second direction different from the first direction. The agricultural machine is connected to a first set of work units with lateral distances between adjacent work units of the first set of work units corresponding to the first distance, and to a second set of work units which are adapted to be inoperative during operation of the agricultural machine in the first direction and adapted to be operative during operation of the agricultural machine in the second direction to cover the areas between adjacent rows which cannot be treated with the work units of the first set of the work units.
