SOWACS: converting soil moisture tension to VWC

[Doug Kieffer]

Doug Kieffer writes to the sowacs list:
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I'm curious if anyone knows of any convenient way to do a rough conversion 
from soil moisture tension to volumetric water content (VWC) if the general 
soil type is known.

So far, I just photocopied a page from my "Intro to Soils" text from college 
but
1. It only contains 3 soil types (sandy loam, loam, and clay loam) and
2. It's a bit cumbersome.

I would be interested in some good (high resolution) moisture release curves 
or, even better, a simple calculator program where one could enter a 
moisture tension and soil type and get the rough estimate of VWC.  Recent 
web searches haven't led me to anything so far.

Thanks,
Doug Kieffer
dougkieffer@hotmail.com

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