The Nitrogen Cycles Project provides an improved scientific basis for developing and testing mathematical process models. These models simulate the biogeochemical cycling of nitrogen in Illinois' environments, and are also used for conducting N mass-balance studies.

Water Quality Initiative publication WQ252 Reviewed October 1, 1993 Nitrogen in the Environment: Nitrogen Cycle Scott C. Killpack and Daryl Buchholz Department of Agronomy, University of Missouri-Columbia Nitrogen is important to all life. Nitrogen in the atmosphere or in the soil can go through many complex chemical and biological changes, be combined into living and non-living material, and ...