PROBLEM TO BE SOLVED: To estimate transition in work propriety of farmwork in a management farm field.SOLUTION: A farmwork plan support device which supports generation of a plan for farmwork in a management farm field is configured to: hold feature quantity information representing correspondence of an image feature quantity and a state of a farm field, an image feature quantity of the management farm field, and work propriety information representing correspondence between a combination of work details of farmwork and the state of the farm field and a work propriety curve indicating transition in work propriety; receive input of work details of farmwork; compare an image feature quantity that the feature quantity information represents with an image feature quantity of the management farm field to estimate a state of the management farm field; determine a work propriety curve corresponding to a combination of the input work details and the estimated state with reference to the work propriety information; and output the transition that the determined work propriety curve shows to a display device.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】管理圃場における農作業の作業適正度の推移を推定する。【解決手段】管理圃場における農作業の計画の生成を支援する農作業計画支援装置は、画像特徴量と圃場の状態との対応を示す特徴量情報と、管理圃場の画像特徴量と、農作業の作業内容及び圃場の状態の組み合わせと、作業適正度の推移を示す作業適正度曲線と、の対応を示す作業適正度情報と、を保持し、農作業の作業内容の入力を受け付け、特徴量情報が示す画像特徴量と、管理圃場の画像特徴量と、を比較して、管理圃場の状態を推定し、作業適正度情報を参照して、入力を受け付けた作業内容及び推定した状態の組み合わせに対応する作業適正度曲線を決定し、決定した作業適正度曲線が示す推移を、表示装置に出力する。【選択図】図1