An inter-laboratory comparison of gaseous and liquid fumigation based methods for measuring microbial phosphorus (P-mic) in forest soils with differing P stocks

摘要

In an inter-laboratory trial, gaseous ("CFE") and liquid fumigation ("Resin") based methods for measuring microbial phosphorus (P-mic) were compared, based on the analysis of soil samples from five forests, which differ in their P stocks. Both methods reliably detected the same P-mic gradient in the different soils. However, when the individual recovery rates of spiked P were taken into account, the "CFE" based methods consistently generated higher P-mic values (factor 2) compared to the "Resin" based approaches. (C) 2016 Elsevier B.V. All rights reserved.