Since the mid-1900s, humans have been exerting an ever-increasing impact on the global nitrogen cycle. Human activities ... critical to the survival of all life on Earth. Nitrification is the ...

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 ...

Nitrogen gas makes up 78% of Earth’s atmosphere and is an essential component in amino acids and proteins. However, plants and animals cannot use nitrogen gas directly. Nitrates and other ...