An improved wheel for agricultural use

The invention, applied in trailed sowing machines, especially applicable to line-sowing, comprises a rim (1, 1a) which supports a tyre (2, 2a, 2b) provided with a peripheral crown (3, 3a, 3b, 3c, 3d), which drags against a disc (4). The peripheral crown (3, 3a, 3b, 3c, 3d) has inserted internally thereof a stiffening element (6) which reduces flexional deformation thereof; the rim (1, 1a) comprises a closed structure (8, 8a), facing towards an external part of the wheel, which is made of a sheet-steel single body, an external wall (9, 9a) of which is smooth.