To provide an epoch-making wheel for a field work machine, the field machine and a riding grooving machine allowing traveling on a road excellently traveling even on the mud of a field as performed conventionally, capable of traveling even on a normal road, scarcely being wobbled, almost free from being damaged, and durable.

In the wheel for a field work machine capable of traveling on the road in which a plurality of mud scraping plates 23 are arranged at the outer peripheral part of the wheel at intervals in the peripheral direction, the mud scraping plates 23 are arranged at an outer periphery forming plate 24 with its plate edge forming the outer peripheral edge in a state of projecting in a direction crossing with the direction of the plate surface with the edges not projecting beyond the outer peripheral edge, and uneven edges 25 that does not form projections 26 acute are formed at the outer peripheral edge of the outer periphery forming plate 24 between the mud scraping plates 23.

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