Which of the following statements concerning applications or capabilities of soil moisture measuring devices is (are) true for the capacitance probe?
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%
E) both A and D

Question

Quizplus · Accepted Answer

Capacitance probes measure the dielectric constant of the soil, which is related to the soil moisture content. They would give the same reading for different soil types if they have the same moisture content percentage, like 15%, because they measure volumetric water content, not soil potential or texture.

Which of the Following Statements Concerning Applications or Capabilities of Soil