In this presentation we will cover the science of nitrogen management: we will start with a better understanding of the nitrogen cycle. The several mechanisms of losses, volatilization and nitrification. We will talk about common myths related to nitrogen management and how those affect nutrient use efficiency and nitrogen management practices. We will close this session providing value proposition for nitrogen management tools and enhanced fertilizer technologies. How those tools can help growers in their programs following the 4Rs of nutrient stewardship to improve nutrient use efficiency, ROI and reduce negative impacts on environmental conditions.