Nitrogen is one of the primary nutrients critical for the survival of all living organisms. Although nitrogen is very abundant in the atmosphere, it is largely inaccessible in this form to most ...

This document helps agricultural producers understand how N interacts in the environment through the N cycle to guide maintenance and sustainability of agricultural crop production. The Nitrogen Cycle ...

Dr. Martin explained the significance of nitrogen ... The research adds to growing evidence that Earth's nitrogen cycle was complex long before the widespread presence of oxygen.