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Soil Lime Requirement By Direct Titration with Calcium Hydroxide

Min Liu, D. E. Kissel*, P. F. Vendrell and M. L. Cabrera

Dep. of Crop and Soil Sciences, 3111 Plant Sciences, Univ. of Georgia, Athens, GA 30602



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  		Fig. 1. Location of Georgia soil samples selected for the lime requirement study.

 


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  		Fig. 2. Example of lime requirement predicted from three aliquots of Ca(OH)2 with a 30-min time interval between two additions, for Soil No. 9.

 


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  		Fig. 3. The complete titration curve to pH 7 for Soil No. 4 using a 30-min time interval between additions of Ca(OH)2. Results are expressed as Mg CaCO3 ha–1.

 


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  		Fig. 4. Comparison of the lime requirement (LR) values (Mg ha–1) from the complete titration curves and LR values predicted from the first three aliquots of base.

 


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  		Fig. 5. Relationship between Ca(OH)2 incubation lime requirement (LR) values and the LR values predicted from the first three aliquots of a Ca(OH)2 titration using 30-min time interval between additions of Ca(OH)2.

 


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  		Fig. 6. Comparison of the lime requirements (LRs) between the Adam-Evans procedure and the 3-d Ca(OH)2 incubations.

 




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