Abstract: Mobile irrigation equipment includes a water delivery tube, a support frame mounting the tube, and a belt traction apparatus movably mounted to the support frame and operable for moving the support frame over the ground. The belt traction apparatus includes drive wheels rotatably mounted to the support frame and an endless traction belt entrained over the drive wheels for engaging the ground and moving the support frame when the wheels are rotated. Each drive wheel has an annular plate, a central hub rotatably mounted to support frame about an axis, spokes supporting the annular plate on the hub in concentric relation with the rotational axis of the hub, and a plurality of lugs attached to the periphery of the annular plate in circumferentially spaced relation to one another and extending in transverse relation to the annular plate and in radial relation to the rotational axis of the hub.