PROBLEM TO BE SOLVED: To enable stable supply of horticultural products even in outdoor cultivation difficult to control an environment.;SOLUTION: A device keeps growth characteristics (variety characteristics) for each variety of horticultural products stored as information about respective periods divided into a plurality of periods in association with an event occurring in cultivation. When information about date and an amount for each event occurring is inputted into each producer according to actual occurrence of the event, delivery schedule date and a delivery schedule amount of a harvest product are calculated based on the inputted information and information about a period associated with the event actually occurring. As a whole, the harvest products of which date and how much is shippable is predicted based on a calculation result about each producer, and sales activity using more highly accurate shipment prediction can be performed by updating a prediction result in a shipment group for organizing a plurality of producers.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
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