Nitrogen is a very important nutrient for growing crops and can be one of the most expensive inputs.  Using this valuable input efficiently can help with overall crop health and environmental sustainability.   Dr. Rob Mikkelsen, Yara North America's Director of Agronomic Services, helps us understand The concept of nitrogen use efficiency (NUE) The difference between maximizing and optimizing NUE How to measure NUE Some practical measures that can be done to monitor NUE How an individual grower can improve their NUE The consequences of failing to improve NUE