(A, B, C) S content (mg g^-1 DW), (D, E, F) Mo content (μg g^-1 DW) and (G, H, I) the [Mo]:[S] 10⁴ ratio (to simplify reading the [Mo]:[S] ratio is presented with a multiplier factor of 10⁴) in mature leaves of B. napus grown under field conditions after (A, D, G) 15 and (B, C, E, F, H, I) 47 days of fertilization.

Plants received no mineral fertilization (hatched bars, 0 kg S.ha^-1, 0 kg N.ha^-1), or 0 kg S ha^-1 (white bar), 12 kg S ha^-1 (gray bar) or 36 kg S ha^-1 (black bar) with 65 kg N ha^-1 (dashed bars) or 125 kg N ha^-1 (full bars). Within the same graph, letters when different between fertilization treatments indicate significant differences for P<0.05.