PROBLEM TO BE SOLVED: To provide a farm work management device for achieving high yield of a crop and improving quality of the crop, and improving so as to reduce cost and amounts of fertilizer and agrochemicals which are used, by efficiently using information of components and functions of the fertilizer and agrochemicals.SOLUTION: A farm work management device comprises: feed material information acquisition means for acquiring feed material information which is information about a feed material which is agrochemicals or fertilizer supplied to a farm field component information acquisition means for acquiring component information which indicates components forming the feed material indicated by the feed material information acquired by the feed material information acquisition means reference information acquisition means for acquiring reference information about a component of a provided material as an external factor which is indicated in a system diagram which indicates an external factor which affects a growth of a crop by at least any of aspects of a physiologic property, ecological property and a life environment and component shortage/excess determination means for determining shortage/excess of components of teh feed material supplied to the farm field based on the component information acquired by the component information acquisition means and reference information acquired by the reference information acquisition means.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】 農作物の高収量化、高品質化をはかり、減肥、減農薬、省コスト化に向けた改善を行うために、それらの成分、機能の情報を有効に利用することを課題とする。【解決手段】 圃場に供給された農薬又は肥料の供給物についての情報である供給物情報を取得する供給物情報取得手段と、供給物情報取得手段により得られた供給物情報にて表される供給物を構成する成分を表す成分情報を取得する成分情報取得手段と、農作物の成長に影響を与える外的要因を生理的性質、生態的性質及び生活環境のそれぞれの観点の少なくともいずれかにて表す系統図に示された外的要因としての提供物の成分についての基準情報を取得する基準情報取得手段と、成分情報取得手段にて取得された成分情報と基準情報取得手段にて得られた基準情報とに基づいて前記圃場に供給された供給物の成分の過不足を判断する成分過不足判定手段とを有する農作業管理装置によって課題を解決する。【選択図】 図3
