Quality Control in Soil Testing Using the Internal Standards: Temporal Variability in Organic Carbon and Extractable Nutrient Elements

    Sahrawat, K L and Murthy, K V S and Shirisha, K and Wani, S P (2014) Quality Control in Soil Testing Using the Internal Standards: Temporal Variability in Organic Carbon and Extractable Nutrient Elements. Communications in Soil Science and Plant Analysis, 45. pp. 1162-1165. ISSN 1532-2416

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    Abstract

    Internal soil standards are used in an analytical laboratory as one of the tools for providing feedback on the quality of soil testing service provided. The objective of this study is to provide results on the temporal variability in soil test values of the internal soil standards used for soil organic carbon (C), extractable phosphorus (P), potassium (K), sulfur (S), boron (B) and zinc (Zn) determination in our analytical service laboratory. The range, mean, standard deviation (SD) and coefficient of variation (CV) values for the internal standards for various fertility parameters varied according to the parameter, and were generally of acceptable quality, except for the extractable P (Olsen-P) in the lower range of extractable P. Our results show that the use of internal soil standards in an analytical service laboratory is a simple, inexpensive and effective tool for providing a feedback on the quality of soil testing service.

    Item Type: Article
    Divisions: RP-Resilient Dryland Systems
    CRP: UNSPECIFIED
    Uncontrolled Keywords: Analytical research support, extractable soil nutrients, fertility evaluation, internal soil standards, Soil testing, quality control, variability in soil test value
    Subjects: Others > Soil Science
    Depositing User: Mr Siva Shankar
    Date Deposited: 17 Mar 2014 05:00
    Last Modified: 23 Oct 2017 10:27
    URI: http://oar.icrisat.org/id/eprint/7624
    Official URL: http://dx.doi.org/10.1080/00103624.2013.874027
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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