#$%^&*AU2020217409A120200903.pdf#####ABSTRACT To provide a fertilization map creating system that creates a fertilization map accurately showing a good growth area and the amount of basal fertilization. The fertilization map creating system includes a growth sensor (21), a GPS device (22), and a 5 growth information accumulating part (31) that stores data, a fertilization map being created based on growth data and position data stored in the growth information accumulating part (31), and the growth information accumulating part (31) storing the position data and the growth data while a tractor (20) drives in a field. The system further includes a growth condition calculation part (calculation part 34) that obtains a growth condition of previously 0 set each area in the field based on the data stored in the memory； a fertilization amount calculation part (calculation part 34) that obtains an amount of fertilization of each area based on the growth condition of each area； and a map creating part (35) that creates the fertilization map showing the amount of fertilization of each area obtained by the fertilization calculation part.
