Originally posted by Michael McSharry
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On the other hand, Irrometer claims their granular matrix Watermark sensor doesn't dissolve and require "no maintenance." Apparently it uses a water permeable membrane to help hold itself together. This paper gives a formula to compensate for temperature effects, like what you observed: http://www.google.com/url?sa=t&rct=j...634,bs.1,d.cWc I guess that means a soil temperature probe would be needed near the moisture sensor so as to calculate the correction.
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