Which of the following statements concerning applications or capabilities of soil moisture measuring devices is (are)true for the tensiometer? A)requires "destructive sampling" for each measurement B)good to turn on automatic irrigation at -50 kPa C)used to turn on irrigation when soil moisture potential reaches -200 kPa D)would give the same reading for both a loamy sand and a silt loam if both contained 15% moisture E)both A and D

Question

Quizplus · Accepted Answer

Tensiometers are suitable for turning on automatic irrigation systems at relatively higher moisture potentials (less negative) such as -50 kPa, indicating they are used before the soil becomes too dry. They do not require destructive sampling, are not typically used at -200 kPa because they lose their effectiveness at moisture potentials more negative than about -85 kPa, and would not give the same reading for different soil types at the same moisture percentage due to differences in soil texture affecting water availability.

Which of the Following Statements Concerning Applications or Capabilities of Soil