Summary
This 2021 review examined conversion equations linking the Olsen-P method to alternative soil phosphorus extraction and assessment methods employed across European soil testing systems. As suggested by the title, the authors synthesised existing equations to facilitate standardisation and comparability of phosphorus availability data across different national soil testing protocols. The work addresses a practical need for harmonisation in soil testing methodology across European farming systems.
UK applicability
The UK uses the CAL (calcium acetate lactate) method for routine soil phosphorus testing rather than Olsen-P; this review's conversion equations would enable direct comparison of UK soil test results with Olsen-P-based assessments common in continental Europe, supporting cross-border nutrient management advice and research synthesis.
Key measures
Conversion equations between Olsen-P and other phosphorus extraction methods (e.g. CAL, DL, Mehlich, etc.)
Outcomes reported
The study reviewed and synthesised conversion equations between Olsen-P and alternative soil phosphorus extraction methods used across European countries. It assessed the comparability and reliability of different plant-available phosphorus assessment approaches for standardisation purposes.
Topic tags
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