The effect of microbial activity on soil water diffusivity

In this study, we explored the effects of microbial activity on the evaporation of water from cores of a sandy soil under laboratory conditions. We applied treatments to stimulate microbial activity by adding different amounts of synthetic analogue root exudates. For comparison, we used soil samples without synthetic root exudates as control and samples treated with mercuric chloride to suppress microbial activity. Our results suggest that increasing microbial activity reduces the rate of evaporation from soil. Estimated diffusivities in soil with the largest amounts of added root exudates were one third of those estimated in samples where microbial activity was suppressed by adding mercuric chloride. We discuss the effect of our results with respect to water uptake by roots.

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Field Value
Author Choudhury, B. U.
Last Updated August 7, 2019, 10:55 (UTC)
Created July 31, 2019, 16:31 (UTC)
Article Host Type publisher
Article Is Open Access true
Article License Type cc-by
Article Version Type publishedVersion
Citation Report https://scite.ai/reports/10.1111/ejss.12535
DFW Organisation RRes
DFW Work Package 1
DOI 10.1111/ejss.12535
Date Last Updated 2019-07-31T16:07:10.331759
Evidence open (via crossref license)
Journal Is Open Access false
Open Access Status hybrid
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Publisher URL https://doi.org/10.1111/ejss.12535