the invention relates to a seed drill comprising a component disk, usher (111) and a disc (12), the rasette little crack on the ground opener and cutting a swath and the rasette expanding and now the opening of said path, the rasette with a blade (121) for training. no path and a seed distributor element (122).the disc (111) has a surface (1111), known as the inner disc, and a peripheral crown (1112) with a series of teeth (21) having a front edge sides (211), a first portion of the tooth to be brought into contact with the ground, and a cut off (e) to outlet (212), the last portion of the tooth is out of the earth.the angle (. alpha.) formed between a first line (d1) defined by the edge of entrance and a tangent (t1) at the perimeter of the inner disc with the first beam line (d1) is less than 20 degrees, the perimeter of the inner disc is defined by a cercl from the lower part of the e teeth (21).the rasette extends substantially vertically at the rear of the axis of rotation of the disc opener (111), the basis of machine element (122) exposed with the seed disc.
