PURPOSE: To enable the subject fertilizer feeder to be readily operated by correctly rising to a feeding position even in the case of a fertilizer vessel having a large weight by making the fertilizer vessel rise and lower on a hopper by introducing the fertilizer vessel to an undulating rotation of a supporting leg.

CONSTITUTION: In a fertilizer operation, fertilizer received in a hopper 2 is drawn out by transmission of a drawing device 1 and applied to a soil surface. In the case of supplying fertilizer as the fertilizer in the hopper 2 is reduced, a supporting leg 4 is brought down and a fertilizer vessel 3 receiving fertilizer is hung and suspended, then said supporting leg 4 is rotated and stood, thus the fertilizer vessel 3 is guided by rotation of the supporting leg 4 and located to over the hopper 2. Next, a discharging port of the fertilizer vessel 3 is opened and fertilizer in the vessel is flowed down, then supplied into the below hopper 2.