Assessment of Error Sources in Measurements of Field pH: Effect of Operator Experience, Test Kit Differences, and Time-Of-Day

• Published in: Communications in Soil Science and Plant Analysis Vol. 49; no. 3; pp. 269 - 285
• Main Authors: Robinson, Nathan J., Norng, Sorn, Rees, David B., Benke, Kurt K., Davey, Michelle
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 04.02.2018; Taylor & Francis Ltd
• Subjects: analytical kits; Bias; Environmental factors; harmonization; impurities; Laboratories; Maximum Likelihood Functional Relationship (MLFR); Measurement methods; pH effects; relationship; Reliability aspects; Soil; Soil chemistry; Soil pH; soil sampling; Statistical analysis; Statistical methods; Uncertainty

Various methods exist to measure soil pH, and while there is general agreement between the existing published laboratory and field-based methods, the latter are subject to uncertainties including test kit reliability, accuracy, precision, and environmental factors. The contribution of this study is...