Improving Nitrogen Use Efficiency for Corn (Zea mays L.) Production

Abstract

Nitrogen (N) fertilizer is one of the main expenses for crops in high-input agricultural systems. Insufficient use of N is not only responsible for higher cost of crop production, but also for environmental pollution.  Corn is one of the most important crop in the world. Application of N is a primary method used to maintain soil nutrients and increase corn yield.  economic and environmental challenges are driving increased interest in improving NUE.  Opportunities abound for improving NUE through implementation of fundamental BMPs, including selection of genetics with high NUE, development of enhanced-efficiency fertilizer products (CRF and NI), precision nutrient application at optimum rate, timing and placement, and carefully water management.