Summary
Core Ideas In situ water retention curve is key to capture the dynamics of root zone functions. Some of the water potential probes can cover a wide range of water potential levels. The potential probes ability to capture an in situ retention curve is tested. The soil water retention curve (WRC) plays a major role in a soil's hydrodynamic behavior. Many measurement techniques are currently available for determining the WRC in the laboratory. Direct in situ WRC can be obtained from simultaneous soil moisture and water potential readings covering a wide tension range, from saturation to the wilting point. There are many widely used soil moisture probes. Whereas near‐saturation tension can be measured using water‐filled tensiometers, wider ranges of water potential require new, more expensive,
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