Untreated Grundy silt loam was found to contain 9.30 M.E. of exchangeable hydrogen and 14.03 M.E. of exchangeable bases per 100 grams of soil in the base-exchange complex. Six months after the same soil had been treated with chemically pure calcium carbonate at the rate of six tons per acre the exchangeable hydrogen content was only 1.15 M.E. and the exchangeable base content was 24.54 M.E. The calcium carbonate treatment, therefore, increased the degree of saturation with bases from 60.13 per cent to 95.52 per cent.
Proceedings of the Iowa Academy of Science
©1931 Iowa Academy of Science, Inc.
Walker, R. H. and Brown, P. E.
"Effects of Various Amounts of Calcium Carbonate on the Degree of Saturation of Some Iowa Soils with Bases,"
Proceedings of the Iowa Academy of Science, 38(1), 166-167.
Available at: https://scholarworks.uni.edu/pias/vol38/iss1/26