The Illinois Soil Nitrogen Test: Should it be used in Iowa?Integrated Crop Management News
AbstractThe test was developed several years ago at the University of Illinois by researchers in the Department of Natural Resources and Environmental Sciences. It is a laboratory procedure designed to measure N liberated from soil heated for 5 hours with dilute alkali solution (sodium hydroxide). The test does not measure nitrate, but does measure exchangeable ammonium and a fraction of soil organic N.
Copyright OwnerIowa State University
Citation InformationJohn E. Sawyer and Mohammod Ali Tabatabai. "The Illinois Soil Nitrogen Test: Should it be used in Iowa?" (2005)
Available at: http://works.bepress.com/john-sawyer/160/