Journal
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
Volume 49, Issue 10, Pages 1144-1156Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00103624.2018.1448866
Keywords
Acid soil; calcium silicate slag; effective calcium carbonate equivalent; liming material; papermill byproduct; relative neutralizing value; steel slag
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Methods used to compare the effectiveness of liming materials (e.g., relative neutralizing value, RNV; effective calcium carbonate equivalent, ECCE) were developed for ground limestone. This method is relatively untested on industrial byproducts that could be used when limestone is expensive or unavailable. The objective was to determine if RNV applies to both ground limestones and industrial byproducts. A 42-d incubation study was performed on three acid soils with 11 ground limestones and 9 different byproducts at four rates based on titration and the modified Adams-Evans buffer method. Overall effectiveness, assessed as RNV compared to Ca(OH)(2), averaged 101.5 +/- 0.9% for all the evaluated liming materials, except the paper sludge and dolomitic marble. Thus, RNV was a good estimate of neutralizing ability when particle size was accurate. Addition of RNV to packaging would facilitate the commercial use of byproducts as liming materials allowing consumers to compare products by price and properties.
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