The effects of lime on the Hydrogen-Ion concentration and base exchange complex of Grundy silt loam

Thumbnail Image
Walker, R. H.
Brown, P. E.
Major Professor
Committee Member
Journal Title
Journal ISSN
Volume Title
Research Projects
Organizational Units
Organizational Unit
Extension and Experiment Station Publications
It can be very challenging to locate information about individual ISU Extension publications via the library website. Quick Search will list the name of the series, but it will not list individual publications within each series. The Parks Library Reference Collection has a List of Current Series, Serial Publications (Series Publications of Agricultural Experiment Station and Cooperative Extension Service), published as of March 2004. It lists each publication from 1888-2004 (by title and publication number - and in some cases it will show an author name).
Is Version Of

In a study of the effects of various kinds and amounts of limestone on the chemical and bacteriological properties of certain southern Iowa soils, it was found by the authors (14) that the Grundy silt loam has a rather high absorptive capacity for lime and other basic materials. Although the lime requirement of this soil was approximately 3 tons of limestone per acre, the experiments indicated that considerably more than 3 tons of limestone were necessary to bring the pH to 7.0 or to completely saturate the exchange complex with bases. Quarry-run limestone applied in sufficient amounts to meet the lime requirement increased the pH from 5.19 to only 5.80 in 3 months' time, whereas, three times that amount increased the pH to only 6.6. It was estimated by extrapolation that approximately 12.6 tons of limestone would be required to bring the reaction of this soil up to pH 7.0. Similarly, limestone sufficient to meet the lime requirement increased the degree of saturation of the base exchange complex with bases from 60.13 to 71.16 percent in 3 months, and three times that amount of limestone, or 9.87 tons per acre of the quarry-run material, increased the degree of saturation to only 82.9 percent.