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. 2018 Apr 28;7(2):37. doi: 10.3390/plants7020037

Figure 4.

Figure 4

Commercial oilseed rape varieties (field experiments 2 and 3) classified according to decreasing values of the ([Cl]+[P]):[S] ratio in mature leaves quantified (a) before flowering and S fertilization (Field experiment 2 using 45 commercial varieties from different locations in France, see SD1) or (b) after flowering and S fertilization (Field experiment 3 using 56 commercial varietieslocalized in Calvados, Lower Normandy, France). Threshold values of the ([Cl]+[P]):[S] ratio classified these oilseed rape plots into three S status groups: S deficient, at risk of S deficiency and S sufficient plants.