Аннотация:This paper demonstrates stable intra-field heterogeneity maps constructed during the analysis of large satellite data. The analysis of the effectiveness of the use of maps of stable intra-field heterogeneity of soil fertility in systems of precision farming has been made. It is shown that on the basis of maps of stable intra-field heterogeneity, it is possible to construct task maps for precision farming. The economic efficiency of the use of task maps for the differentiated input of chemicals was calculated. The economic efficiency is at least $ 120/ha or 5.8 cwt/ha with constant amounts of fertilizers used on the field.