remote sensor to sense thin soil surface layer

[Wim Cornelis]

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Dear subscribers,

I'm looking for a sensor to measure water content (or potential) at the
upper 1 mm of the soil surface. The sensor should be non-destructive and
should preferably measure as a stand alone unit. The sensor is meant for
laboratory measurements (wind tunnel). I was thinking at a microwave
sensor or something similar. Does anyone of you have some experience
with such a sensor or knows a company that could help me? Your help
would be truly appreciated.

Best regards,

Wim

[Bruce comments:
This area of sensing has not yet been covered by sowacs, so I am hoping we
can collect and compile some good information from replies.Thanks for the
question, Wim and please pass on any useful info you may recieve directly
as well. Bruce]

-- 
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Wim Cornelis
Department of Soil Management and Soil Care
University of Ghent
Coupure links 653
B-9000 Gent
Belgium
tel.: +32 (0)9 264 60 40
fax: +32 (0)9 264 62 47
e-mail: wim.cornelis@rug.ac.be
http://soilman.rug.ac.be
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