To provide an irrigation control system that effectively make the irrigation of the cultivation vessel used at the time to nurture the [problem] seedlings. In the support horizontal frame 22 to place the A group of cultivation container 12 ... 12, pass the horizontal material, in a group of cultivation container 12 ... 12 was suspended in a horizontal material on the lower side of any one of the cultivation container 12a of, attaching a sensor device of the place in which the light-emitting part made of a light-receiving unit on the opposite inner surfaces sandwiching the lower outlet of the upper funnel section and a funnel section, beam between the light emitting unit and a light receiving unit but when it is cut off, and input the signal emanating from the sensor device to stop switch 39 of the irrigation pump 34, irrigation pump 34 are to be stopped.FIELD 1【課題】幼苗を育てるときに用いる栽培容器への灌水を有効に行える灌水制御装置を提供する。【解決手段】一群の栽培容器12・・・12を配置する支持水平枠22中に、水平材を渡し、水平材に吊下げたところの一群の栽培容器12・・・12中のいずれか一つの栽培容器12aの下側に、上部漏斗部と該漏斗部の下部出口を挟む対向内面に発光部と受光部よりなるところのセンサー装置を取付け、発光部と受光部間の光線が遮断されたとき、センサー装置から出る信号を灌水ポンプ34の停止スイッチ39に入力し、灌水ポンプ34が停止するようにしてある。【選択図】図1
