Decision Support Systems (DSS) integrate data from soil tests, crop models, weather forecasts, and farm management records to assist in fertilization planning. These tools provide actionable recommendations tailored to specific field conditions and crop requirements. They also facilitate compliance with regulations and support documentation for certification schemes. Developed before the season’s first nitrogen application, the "Fertilization Planning Document" ensures fertilization planned meeting crop needs and complying with environmental regulations. The guidelines by the COMIFER Prev’N Label help structure this plan by considering factors like soil fertility and crop requirements, enabling us to set a realistic, science-based nitrogen target. This approach is integrated into the HVE label, or Haute Valeur Environnementale, is a French certification that promotes agricultural practices with a high level of environmental performance. It was created by the French Ministry of Agriculture and is awarded to farms that demonstrate reduced environmental impact and sustainable resource management.