Non-Destructive Method for Nitrogen

[PIERRE D. THIBODEAU]

I'm looking for a non-destructive method for determining nitrogen content in
plant tissue.  There is, apparently, a non-destructive method of determining
nitrogen content in cereal.  The technology is called "near-infrared
reflectance analysis" or something like so.  I'm looking for name of
manufacturers of this technology.  Can someone help me?

Thank you!

Pierre Thibodeau
Technologist, Biology Dept.