PROBLEM TO BE SOLVED: To provide a seeding timing determination support apparatus capable of notifying a worker of a seeding timing matching the climate of a particular year for a plant to be grown in a place where the plant is to be grown.SOLUTION: At least one of actually measured temperatures of an earth temperature and an air temperature in a place where seeds of the plant are sown is continuously measured, and based on the actually measured temperature, at least one of predicted temperatures of an earth temperature and an air temperature on the present day is calculated. If the predicted temperature on the present day is within a predetermined scope of the temperature at which germination is possible, and the season of the present day is the predetermined season when germination is possible, notification is made to urge the sowing of plant seeds. That is, based on the actually measured temperature of the earth temperature or the air temperature measured within a predetermined period in a seeding place where the plant is to be grown, the predicted temperature on the present day, which is the seeding day, is calculated. It is determined whether or not the predicted temperature on the present day and the season of the present day are suitable for the seeding, and if it is determined that they are suitable, the sowing is urged.COPYRIGHT: (C)2013,JPO&INPIT【課題】栽培しようとする植物について、当該植物を栽培しようとする場所のその年の気候に合った播種時期を通知することができる播種時期決定支援装置を提供する。【解決手段】植物の播種場所の地温又は気温のうち少なくとも一方の実測温度を継続的に測定して、この実測温度に基づいて、現在日における地温又は気温のうち少なくとも一方の予測温度を算出する。そして、現在日の予測温度が所定の発芽可能温度範囲内に含まれており、さらに、現在日の季節が所定の播種可能季節であったとき、植物の播種を促す旨の通知を行う。つまり、植物を栽培しようとする播種場所において所定期間内に測定された地温又は気温の実測温度に基づいて当日である現在日の予測温度を算出し、この現在日の予測温度と当該現在日の季節とが播種に適しているか判定して、適していれば播種を促す。【選択図】図1