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Abstract
Influence of magnesium sulfate (MgSO4 ‐ 0, 0.01, 0.1, or 1.0 mM) on absorption of calcium as 45Ca2+ in 2‐hr exposures at pH 5.5 by 1‐cm root‐tips of Sorghum bicolor (L.) Moench. cv SC574, SC283, GP‐10, and Funk G522DR was undertaken. Magnesium (0.01 mM) induced a significantly increased and 1.0 mM induced a significantly decreased 45Ca2+ uptake.