The project is part of the strategic and economic context of precision farming. The objective is to maximize farmers revenue by minimizing the environmental impact of agricultural practices. One of the idea is to modulate practices in intra-plot level. The main technical obejctive is to develop a long-range drone imaging system and the image processing algorithms and associated agronomic models to supply the tools for decision system needed to implement precision agriculture crop Wheat, Maize, Sunflower and Rapesee.