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Correlation Of Sikora And Smith-Mclean- Pratt Soil Buffer Ph Measurements, B. Rutter, D. A. Ruiz Diaz, J. Thomas
Correlation Of Sikora And Smith-Mclean- Pratt Soil Buffer Ph Measurements, B. Rutter, D. A. Ruiz Diaz, J. Thomas
Kansas Agricultural Experiment Station Research Reports
Historically, the K-State Research and Extension Soil Testing Laboratory has used the Smith-McLean-Pratt (SMP) buffer solution to estimate total soil acidity and estimate lime recommendations. The SMP solution contains hazardous chemicals and poses a health risk to lab workers. The Sikora buffer solution was designed as a replacement for SMP and contains no hazardous chemicals. A study was conducted to investigate the relationship between these two buffers in Kansas soils. A strong positive correlation was observed between SMP and Sikora buffer pH measurements. However, linear regression suggests that the relationship is not 1:1 (slope = 0.88). Therefore recommendation equations using …