"Soluble aluminum studies: II. Minimum concentrations of aluminum found to be toxic to corn, sorghum, and barley in culture solutions."; "Pierre, W. H. (William Henry), 1898-", "Ligon, W. S."; "Corn--Effect of aluminum on.", "Barley--Effect of aluminum on.", "Growth (Plants)--Research.", "Soil acidity--Research.", "Sorghum--Effect of aluminum on.", "Aluminum."; "Pierre, W. H. (William Henry), 1898-", "Ligon, W. S."; "1932"; "Journal article reprint from: Soil Science, v.34:no.4 (1932:Oct.)."; ""; "P17738"; "pec"; "Soil acidity--Research.", "Barley--Effect of aluminum on.", "Corn--Effect of aluminum on.", "Aluminum.", "Growth (Plants)--Research.", "Sorghum--Effect of aluminum on."; "14256"; .