Abstract: A device is provided that predicts in advance a farm that will be liquidated due to farm retirement or finds a renter of the farm. CPU 50 acquires determination timing. This determination timing may be acquired from one stored in advance or may be acquired externally. CPU 50 calculates age of each farmer at the acquired determination timing based on age information that is included in basic information. CPU 50 determines whether or not the age of the each farmer at the determination timing is a specified age or higher. CPU 50 predicts whether or not the each block will be a liquidated farm based on a determination result of the age determination means, information on presence or absence of a successor, and information on presence or absence of intention to expand about the farmer of the each block. CPU 50 outputs the block that is predicted as the liquidated farm and the block that is not predicted as the liquidated farm by the liquidated farm prediction in a distinguishable manner from each other.

Abstract: Positional information transmitted from a mobile unit mounted on an agricultural work vehicle is displayed overlapping with map data obtained from a map database. Display of the field data on the display screen is color-coded based on a result of comparison of a date of the positional information transmitted from the mobile unit with the field data obtained from the map database and a scheduled date for work stored in the field data. Thereby, an operational management system of an agricultural work vehicle capable of promptly and spatially confirming an operational situation of the agricultural work vehicle is provided.