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

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Relation http://oar.icrisat.org/7624/
http://dx.doi.org/10.1080/00103624.2013.874027
10.1080/00103624.2013.874027
 
Title Quality Control in Soil Testing Using the Internal Standards: Temporal Variability in Organic Carbon and Extractable Nutrient Elements
 
Creator Sahrawat, K L
Murthy, K V S
Shirisha, K
Wani, S P
 
Subject Soil Science
 
Description 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.
 
Publisher Taylor & Francis
 
Date 2014
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/7624/7/sahrawat2014.pdf
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