Abstract: Vineyard supporting pole, in particular an intermediate pole arranged between the two head poles, between which is stretched the plant carrying wire, the pole consisting of a metal section whose lower end is driven into the ground. The top end of the pole has a sliding surface for supporting the plant, the sliding surface being formed by a curved part of the metal section, which is furrowed by a groove within which the carrying wire is held.

Abstract: Resiliently compensated wire tensioner which can be used especially in the field of vine growing to tension “moving wires” of vine supports. It comprises a wire tensioner, a suitable helical spring located between a first hooking member capable of securing it to a corresponding end post of a support for vines or other plants and a second hooking member suitable for securing it to a winding member to which the ends of the pair of “moving wires” normally used in the construction of the supports are secured and which when suitably operated in rotation by a suitable tool causes winding and consequent tensioning of the same, the helical spring having turns at some distance from each other, so that it can be operated under compression and the corresponding first hooking member and the second hooking member being applied thereto in such a way as to stress it only by shortening; a suitable immobilizing member capable of securing the winding member in the appropriate tensioning position being also provided.