Comparative Evaluation of Inductively Coupled Plasma–Atomic Emission Spectroscopy and Colorimetric Methods for Determining Hot-Water-Extractable Boron in Soils

Frequency of boron (B) deficiency is increasing in rainfed systems, and hence there is a need to diagnose the deficiency. Colorimetric methods are still widely used in soil-testing laboratories in India for measuring B. Little information is available on the comparative evaluation of the colorimetri...

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Bibliographic Details
Published in:Communications in Soil Science and Plant Analysis 2012-03, Vol.43 (6), p.948-957
Main Authors: Sahrawat, K. L, Shirisha, K, Murthy, K. V. S, Gajbhiye, P. N, Kundu, S, Wani, S. P, Pardhasaradhi, G
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Boron
colorimetric method
colorimetry
correlation
correlation coefficient
diagnosis of B deficiency
extractable boron
Fundamental and applied biological sciences. Psychology
ICP-AES
Methods
Plasma
soil
soil sampling
Soil science
soil testing
soil type
Soils
spectroscopy
Studies
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Summary:Frequency of boron (B) deficiency is increasing in rainfed systems, and hence there is a need to diagnose the deficiency. Colorimetric methods are still widely used in soil-testing laboratories in India for measuring B. Little information is available on the comparative evaluation of the colorimetric and inductively coupled plasma (ICP) methods for determining extractable B in soils. We describe results of the comparative evaluation of these methods for measuring extractable B in 57 soil samples with pH values ranging from 5.3 to 9.5. There was a significant correlation between B values determined by the two methods, and the correlation coefficient was greater for soil samples with pH in the neutral to alkaline range. Interaction between soil samples and methods (ICP or colorimetric) was significant except for soil samples in the pH range of 8.0 to 9.5. Precision for B determination was greater with the ICP than with the colorimetric method.
ISSN:1532-2416
0010-3624
1532-2416
1532-4133
DOI:10.1080/00103624.2012.653030