A fork (1) for the mechanization of a vineyard, which is introduced inside a hollow post (7), with a general C-shape, the fork comprising a central body (3) composed of two wings (4) and a core (5), and, attached to said central body, two arms (2) extending at a ß angle with respect to the wings, where the arms terminate in curled ends (6) that clip the longitudinal edge (9) of the post from the inner part towards the outer part the wings have an inverted tapered shape and form an µ angle therebetween each end (6) comprises a curved section formed by a first portion and a second portion attached to each other, where the first portion is an extension of the arm and the second portion comprises, in its final end, a curl-shaped curved portion where in a closing position of the fork, the arms are housed inside of the post.