Soil matric potential - tensiometer (T4)

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[edit] Parameter to be measured:

Soil matric potential

[edit] Method:

Tensiometer

[edit] Equipment:

T4 with external refilling option

[edit] Advantages:

  • Very fast response
  • Reliable
  • Refilling possible without taking the probes out of the soil
  • Great range: -1000 to 0 to 850 hPa

[edit] Disadvantages:

  • Accuracy could be a disadvantage (+/- 0.25 kPa) according calibration sheet) depending on objective of study
  • Some of installed tensiometers showed a stepwise output during small changes in soil matric potential (e.g. during drainage) in the order of 0.25 kPa


[edit] What to watch out for:

  • Freezing conditions at fieldsite: at shallow soildepth (do not install year-round) and above-ground (insulate the shaft with PVC and isolation material)

[edit] Problems/Questions:

[edit] Links

Projects that used the above equipment:

  • PhD project WS10 HJ Andrews Experimental Forest

Other related web sites:

[edit] References

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