With increasing supply of S and N, the S and N concentra- tions as well as the N : S ratio in broccoli florets changed
(Tab. 2).
In general, plants receiving an optimal N supply had
significantly lower S concentrations (6.04 2.56 g (kg DM)–1)
than those with insufficient N supply (9.54 ± 2.12 g (kg DM)–1).
The reduction of S supply led to a decrease of the S concentrations.
The decrease was strongest for those plants having an optimal N supply in combination with insuffi- cient S supply (0.2 g).
Sulfur concentrations were reduced by63% as compared to optimal S supply (0.6 g) and by 68% with respect to excessive S supply (1.0 g S) (Tab. 2).