Abstract: A spreading support system includes a height difference acquisition unit to acquire a height difference in an agricultural field, a spread amount acquisition unit to acquire a planned spread amount which is an amount of an object to be spread on the agricultural field, a spread amount correction unit to correct, on the basis of the height difference acquired by the height difference acquisition unit, the planned spread amount acquired by the spread amount acquisition unit to obtain a corrected spread amount, and a spread amount output unit to output the corrected spread amount.

Abstract: An agriculture assistance system includes a data setting unit configured or programmed to associate agricultural data at a predetermined position in an agricultural field to a plurality of areas set in the agricultural field, and to set the associated agricultural data as data corresponding to the respective areas, an area setting unit configured or programmed to set the areas in the agricultural field, and a map display unit configured or programmed to display the data corresponding to the respective areas. When the areas set by the area setting unit are changed, the data setting unit is configured or programmed to reassociate the data to the areas after the change.