PROBLEM TO BE SOLVED: To provide an operation part of an electric operation unit of a fertilizer application device that an operator can easily and efficiently handle, and to provide an electric operation unit of a fertilizer application device that can easily cope with even when specifications of a tractor are changed.SOLUTION: Radio communication control equipment of a fertilizer application device includes a control unit provided to a fertilizer application device 2 for controlling the operation of an application amount adjusting unit 22 according to a command signal of a radio wave received by an antenna, and a remote control device 31 provided with a communication unit for transmitting the radio wave of the command signal. A plurality of operation modes are provided, and an operation mode can be selected by the operation on a remote controller 31 side. When an electric power switch is turned off and turned on again, an operation mode at the time when the electric power switch is turned off last time is selected.SELECTED DRAWING: Figure 1【課題】作業者が容易に効率よく扱うことができる肥料散布装置の電動作動部の操作部を提供することであり、トラクタの仕様が変更された場合でも容易に対応が可能である肥料散布装置の電動作動部を提供する【解決手段】肥料散布装置２に設けられアンテナで受信した電波の指令信号に応じて散布量調整部２２の作動を制御する制御部と、指令信号の電波を送信する送信部を備えたリモコン装置３１とを有する無線通信制御装置であって、複数の操作モードが設けられていて、リモコン装置３１側の操作によって操作モードの選択が可能であり、電源スイッチをオフにした後再びオンにすると、直前の電源スイッチをオフにしたときの操作モードとなる制御となっている散布装置の無線通信制御装置による。【選択図】図１
