schleuderd u00fcngerstreuer (1) with a reservoir (2) for fertilizer and a verteilorgan (3) for the application of fertilizer to a field, and an adjustable dosier u00f6ffnung (4) on the dosage of fertilizer on the verteilorgan (3) with a valve (5) is trained with a lever (6) and that attacking drive (7) for a schieberdrehachse (a) revolving,characterized by the fact that a rotation angle sensor (8) for collecting the schieberposition at the schieberdrehachse (a) is arranged.