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The effect of sulfur deficiency and H2S fumigation on the cation balance in shoot and roots of seedlings of Chinese cabbage. Data represent the mean (±SD) of the contents of potassium (K), calcium (Ca), and magnesium (Mg) in shoot (left) and root material (right) of three measurements with three plants in each. The contents of Ca and Mg were doubled to account for their divalency.
