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Effect of airdrying, γ-irradiation and chloroform fumigation of soil on extractability of trace elements

Published online by Cambridge University Press:  27 March 2009

G. P. Sparling  and
M. L. Berrow
G. P. Sparling
Affiliation:
Departments of Microbiology, and Spectrochemistry, The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen, AB9 2QJ, Scotland
M. L. Berrow
Affiliation:
Departments of Microbiology, and Spectrochemistry, The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen, AB9 2QJ, Scotland
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Extract

In many instances soils are routinely air-dried and sieved prior to chemical analysis to permit ease of handling and decrease variability. Such drying, however, can increase the extractability of some elements, for example, the amount of P extracted by 0'5 m-NaHCO3 (Brookes, Powlson & Jenkinson, 1982). Much of the increased P is derived from soil micro-organisms killed by the soil drying (Brookes et al.1982). Similarly, much of the flush of C and N mineralization that occurs after rewetting of dried soils can be derived from killed soil micro-organisms (Jenkinson & Powlson 1976; Marumoto et al.1977; Marumoto, Anderson & Domsch, 1982).

Type
Short Notes
Information
The Journal of Agricultural Science , Volume 104 , Issue 1 , February 1985 , pp. 223 - 226
Copyright
Copyright © Cambridge University Press 1985

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