Precision farming requires the use of the technologies of systems of Global Positioning (GPS), sensors, satellites and aerial along with systems of geographic information (GIS) images to estimate, evaluate and understand these variations. The information gathered can be used to assess more accurately the optimum planting density, estimate fertilizers and other necessary inputs, and more accurately predict the production of crops. Precision agriculture aims to optimize the management of a plot from the agronomic point of view: adjusting to the needs of the plant cultivation practices (e.g.: satisfaction of the needs of nitrogen). Resulting: reducing the impact linked to agricultural activity (eg: limitations of the dispersion of nitrogen). Economic: increase competitiveness through greater effectiveness of practices (e.g.: improvement of the management of the cost of the nitrogenous manure). In addition, the Agriculture of farmer precision offers numerous reports which may: constitute a real memory of the field. Help decision making. Go in the direction of traceability requirements. Improve the intrinsic quality of agricultural products (example: index of proteins in the case of the bread wheats) more technical articles, videos and forums about engormix.com precision agriculture