PROBLEM TO BE SOLVED: To provide a working vehicle with a fertilizer and a disseminator which can effectively prevent a variation in the spray amount at the start of spray work.SOLUTION: When a spray operation member is on-operated at a vehicle speed lower than a prescribed spray reference vehicle speed, a control device performs shutter control for operating a shutter actuator so that a shutter is brought into an opened state, and performs gear change control for operating a gear change actuator so that the vehicle speed reaches the spray reference speed. The gear change control operates the gear change actuator so that the vehicle speed is raised to the spray reference speed by taking a time longer than a standard time which is necessary for raising the vehicle speed to the spray reference speed by the gear change actuator.COPYRIGHT: (C)2015,JPO&INPIT【課題】散布作業開始時における散布量のバラツキを有効に防止し得る施肥・播種装置付き作業車輌を提供する。【解決手段】制御装置は、車速が所定の散布基準車速よりも低速で散布操作部材がオン操作されると、シャッターが開状態となるようにシャッターアクチュエータを作動させるシャッター制御を行い且つ車速が散布基準速度となるように変速アクチュエータを作動させる変速制御を行う。前記変速制御は、前記変速アクチュエータが車速を散布基準速度まで上昇させる為に要する標準時間よりも長い時間をかけて、車速が散布基準速度まで上昇されるように前記変速アクチュエータを作動させる。【選択図】図9