Arrangement of a pad for an agricultural soil treatment device, in particular a planter, with the following characteristics: - several crank arms (2), oriented in the direction of travel (F) and which can be tilted with respect to the treatment device of soil around a tilt axis (1) that runs transversely to the direction of travel (F), in which the tilt axis (1) is arranged by a leading end (2v), according to the direction of travel (F ), of the tilting arms of the pillow (2), - at least one element of the pillow (3) placed at one end (2h), rear according to the direction of travel (F), of the tilting arms of the pillow (2), in which the pad arrangement has at least one adjustment means with a single actuation means (4) for the continuous tilting of the various pillow tilting arms (2) around its respective tilting axis (1), characterized in that adjustment means they have for the joint tilting of the various pillow swing arms (2) an adjustment bar (5), in particular unique, which can rotate around a rotation axis (R) that runs transversely to the direction of travel (F ), in which the drive means (4) are shaped to produce the rotation of the adjustment bar (5).Disposición de almohaza para un dispositivo de tratamiento de suelo agrícola, en particular una sembradora, con las siguientes características: - varios brazos basculantes de almohaza (2), orientados en la dirección de marcha (F) y que pueden bascular respecto al dispositivo de tratamiento de suelo en torno a un eje de basculación (1) que discurre transversalmente a la dirección de marcha (F), en que el eje de basculación (1) está dispuesto por un extremo (2v) delantero, según la dirección de marcha (F), de los brazos basculantes de almohaza (2), - al menos un elemento de almohaza (3) colocado por un extremo (2h), trasero según la dirección de marcha (F), de los brazos basculantes de almohaza (2), en que la disposición de almohaza tiene al menos un medio de ajuste con un único medio de accionamiento (4) para l
