Making Nitrogen Available to Trees
Nitrogen affects the molecular interactions, compound shapes and functions, and the chemical symmetry of life-maintaining materials. In ecosystems, nitrogen is the most precious of elements--carefully used, relentlessly recycled, and biologically hoarded.
The link address is: http://warnell.forestry.uga.edu/service/library/index.php3?docID=278&docHistory%5B%5D=12&docHistory%5B%5D=31