Gypsum block can measure water potential up to

A. 1 - 15 bar

B. 15 - 31 bar

C. 31 - 100 bar

D. None of the above

Answer: Option A

Solution(By Examveda Team)

Gypsum block can measure water potential up to 1 - 15 bar.
A soil moisture block often referred to as gypsum block is a device for measuring soil moisture changes.
The amount of water in the soil is determined by the electrical resistance between the two electrodes within the gypsum block. More water present in the soil will reduce the resistance, while less water will increase it.