Riesling: changes in norisoprenoid content with nitrogen fertilization
These German authors studied the impact of nitrogen fertilization on the content of five norisoprenoids (β-ionone, β-damascenone, TDN, actinidol and vitisparane) in the resultant Riesling wines.
Find the original article at: http://www.sasev.org/journal/sajev-articles/volume-28-1/Vol%2028%20%281%29%20Paper%204.pdf