An idea of knowledge management is composed of (1) defining the four steps of recognition: data, information, knowledge and wisdom, (2) decision-make actions of evidence mining and context making, (3) system makeup of input and output on management.
In simulating expert farmers’ practiced, five factors of farming system and eleven units of thinking were derived. The five factors are crop, field, technology, constraints and motivation, which have already been introduced when proposed a model of community-based precision agriculture as a Japanese model. The eleven units, a new idea of analyzing farmer’s decision process, will be discussed with farm practice such as weed management.
With a combination of the real-time soil spectrophotometer (RTSS) and a combine harvester with a yield monitor, a system of field maps was provided. The assumption of nitrogen balance made a map of missing nitrogen as evidence of environmental impacts. A candidate of recommendation was derived from the context using yield map, protein map and missing nitrogen map, accompanied with a consideration of farmer’s motivation.
A keen behind story of the last worldwide food crisis was that production increase could not catch up the demand increase for the last decade, and that is why the crop stock fell down below 15 % in the world. In near future all farm land even house garden will be required for the contribution to food production. Against the global food crisis City Kawaguchi, the second large city in Saitama prefecture and a bed town city of Tokyo Metropolis, has proposed a vision of city agriculture with the precision thinking. They are looking for thinking process of decision making for their survival in re-finding a value of city agriculture.
