PROBLEM TO BE SOLVED: To provide a takeout mechanism of a planting board, in which the planting board can be taken out easily from a hydroponic cultivation shelf without damaging the plant on the planting board and without polluting the around of the plant by the drip of a liquid fertilizer from the plant on the plant board.SOLUTION: A takeout mechanism 3 has: a hinge shaft which is configured to have the direction orthogonal to the takeout direction of a planting board 2, has a length in the direction parallel to the cross direction of the planting board, and is rotatably fixed under the planting board to a frame 12 of a hydroponic shelf 1； and a rotating piece which is a tongue-like or rod-like member having a hinge shaft attached to one end thereof, and which lifts the end portion of the planting board so as to be able to insert a liquid fertilizer receiving pan 5 while contacting the other end to the lower surface of the vicinity of the end portion in the takeout direction of the planting board interlockingly with the rotation of the hinge shaft.SELECTED DRAWING: Figure 2
