The invention refers to a distributor head for an agricultural machine, such as a seed drill, comprising a chamber, to which is connected a pipe (8) for supply of seed or other granular material, wherein the chamber has a plurality of exit holes (10), which are connected with seed coulters (6) or other seed spreading aggregate, in addition to which at a predetermined number of exit holes closing apparatus (11) are arranged intended fo opening and closing said predetermined number of exit holes. Electricity conducting leads (A - E 41, 42, 43) are inserted along at least the extension of said predetermined number of exit holes (10) so as by means of a control entity (30, 40) to selectively activate one or more of said closing apparatus (11).
