Figure 2.

Strong positive correlations between changes in sulfur and potassium contents in response to sulfur deficiency and H₂S fumigation in the shoot of seedlings of Chinese cabbage. The values for sulfur are multiplied by two to account for the divalency of sulfate. Data represent the mean (±SD) change in content relative to control conditions of three measurements with three plants in each. The goodness of fit (r²) of a linear regression is indicated.