The present invention relates to an element for sowing seed drill comprising an opening disk (111) and a skimmer, the skimmer with a blade of the formation of a groove and a distributor element of seeds. Said disk (111) has a solid surface (1111), called the inner disk, which is extended by a peripheral ring (1112) carrying a series of teeth (21) asymmetric, with an edge of the input (211), the first portion of the tooth to come into contact with the ground, and an exit edge (212), the last portion of the tooth to leave the earth, the angle (a) formed between a first straight line (d1) defined by said edge of the input and a tangent (t1) to the inner disk to the point of intersection with the first straight line (d1) being less than 20°.
