Pulse Brain · Growing Health Evidence Index
Peer-reviewed

A Novel Assay for On‐Site Detection of Soil Microbial Activity

Franziska Weinrich, Christoph Rosinger, Luca Giuliano Bernardini, Katharina Keiblinger, Gernot Bodner

Soil Use and Management · 2026

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Summary

ABSTRACT Soil degradation and the loss of organic carbon threaten agricultural productivity and climate resilience worldwide. Yet, practical on‐farm tools for assessing soil microbial activity, an essential indicator of soil health, remain scarce. Most available methods require laboratory infrastructure or scientific field equipment, thus limiting their use in on‐farm monitoring and in resource‐constrained regions. Here, we present a low‐cost assay that quantifies microbial respiration through the CO 2 ‐induced colour change of a pH‐indicator, evaluated via smartphone imaging. Tested across 13 sites in Eastern Austria with different land uses (conventional farming, conservation farming and field margin soils) and substrate amendments (glucose, milled alfalfa and milled straw), the method r

Subject
Climate & greenhouse gas mitigation
Source type
Peer-reviewed study
System type
Other
DOI
10.1111/sum.70221
Catalogue ID
SNmozbl59h-r9c9g4
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