Fuente: Wipo "precision agriculture" The present invention provides an autonomous robotic modular agricultural machinery and method of performing various precise agricultural applications including weeding, spraying, sowing, towing, crop monitoring and yield prediction for both large scale and small scale farming. The robotic modular agricultural machinery of the present invention is guided by RTK-GNSS / Vision system, UAV/satellite data system which provides both intra as well as inter row precision crop culture applications. The auto-weeding system of the present invention enables complete weed removal by simultaneously performing both mechanical and chemical weeding. Further the present invention is configurable in three different operation modes, namely manual, semi-automatic and fully automatic, coupled with solar energy battery charging system. Furthermore the robotic modular machinery with autonomous precision system improves the farm yield and eliminates the human intervention in farm field as well as displaying the yield data.(Figure to be published along with abstract : Figure 1)