
Acta agriculturae Slovenica, 85 - 2, november 2005
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Gravimetric Method (Vol %)
Sensor Measurements (Vol %)
TDR 100 20b
Figure 10: Comparison of Gravimetric method vs. TDR 100 Water Content
Reflectometer measurements of soil volumetric water content for 20 cm
homemade rods for Silt Loamy soil. The dotted line is 1:1 line.
TDR 100 measurements in Sand soil strongly deviated from gravimetrically
determined VWC (dots above the 1:1 line). The deviation was significant for both
original (a) and replicated (b) rods, TDR sensors overestimating the VWC (Figures 11
– 14).
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